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{{Applies To Bora}}
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<section begin=History/>
{| style="border-collapse:collapse; "
!colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History
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|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|{{oldid|14898|1.0.0}}
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|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|New documentation layout
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|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|Mar 2022
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|Updated Bank 34 pinout
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|}
<section end=History/>
<section begin=Body/>= Introduction = Programmable logic ==
The following paragraphs describe in detail the available PL I/O pins and how they are routed to the Bora connectors. The Zynq-7000 AP SoC is split into I/O banks to allow for flexibility in the choice of I/O standards, thus each table reports one bank configuration. Moreover, Bora design allows carrier board to power two PL banks in order to achieve complete flexibility in terms of I/O voltage levels too.
|-
!FPGA Bank
!Type
!I/O Voltage
!Voltage Pins
|-
|Bank 35
|High range (HR)|User defined<br>VIO=FPGA_VDDIO_BANK35<br>'''1.8 to 3.3V'''
|J1.2<br>J1.66<br>J1.67<br>J1.68
|
|-
|Bank 34
|High range (HR)|Fixed<br>'''VIO=3.3 V'''
| -
|
|-
|Bank 13
|High range (HR)|User defined<br>VIO=FPGA_VDDIO_BANK13<br>'''1.8 to 3.3V'''
|J3.95<br>J3.96<br>J3.97<br>J3.98<br>J3.99
|Bank 13 is available only with Zynq XC7Z020 part number. Although this bank is not available on Bora SOMs equipped with the XC7Z010 SOC, VDDIO_BANK13 pins must not be left open and must be connected anyway, either to ground or to an external I/O voltage.
|-
|}
Highlighted rows are related to signals that are used for particular functions into the SOM.
=== FPGA Bank 34 ===
The following table reports the available pins connected to bank 34:
|-
| IO_L3N_T0_DQS_34 || J2.17 ||
|-style="background:#FF6633;"| IO_L3P_T0_DQS_PUDC_B_34 || J2.15 || Internally connected to a 10kΩ pull-up
|-
| IO_L4N_T0_34 || J2.20 ||
|-
| IO_L5P_T0_34 || J2.14 ||
|- style="background:#FF6633;"| IO_L6N_T0_VREF_34 || J2.11 || Internally used for SOM ID. Connected to a 10kΩ pull-up
|- style="background:#FF6633;"
| IO_L6P_T0_34 || J2.9 || Internally used as CAN_TX
|-
| IO_L7P_T1_34 || J2.8 ||
|- style="background:#FF6633;"| IO_L8N_T1_34 || J2.7 || Internally used for SOM ID. Connected to a 10kΩ pull-up|- style="background:#FF6633;"| IO_L8P_T1_34 || J2.5 || Internally used for SOM ID. Connected to a 10kΩ pull-up
|-
| IO_L9N_T1_DQS_34 || J2.6 ||
|}
Regarding power voltage, take into consideration that Bank 35 34 is fixed at 3.3V. For ====Routing information====Routing implemented on Bora SoM allows the use of bank 34's signals as differential pairs as well as single-ended lines. Signals are grouped as denoted by the following table that details routing detailsrules on Bora module. No carrier board guidelines can be provided, because these are application-dependent. Pairs are highlighted with different colors. When used as differential pairs, differential impedence is 100 Ohm. When used as single-ended signals, please refer to impedence is 50 Ohm. {| class="wikitable" border="1"| align="center" style="background:#f0f0f0;"|'''Bora pin name'''| align="center" style="background:#f0f0f0;"|'''Individual trace length<br>[mils]'''| align="center" style="background:#f0f0f0;"|'''Intra-pair match<br>[mils]'''| align="center" style="background:#f0f0f0;"|'''Inter-pair match<br>[mils]'''| align="center" style="background:#f0f0f0;"|'''Group name'''|-| IO_L1N_T0_34||align="center"|1751,37||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L1P_T0_34||align="center"|1749,02||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L2N_T0_34||align="center"|1625,68||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L2P_T0_34||align="center"|1624,91||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L4N_T0_34||align="center"|1581,72||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L4P_T0_34||align="center"|1582,11||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L5N_T0_34||align="center"|1769,81||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L5P_T0_34||align="center"|1776,23||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L7N_T1_34||align="center"|1566,52||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L7P_T1_34||align="center"|1569,36||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L9N_T1_DQS_34||align="center"|1490,25||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L9P_T1_DQS_34||align="center"|1498,04||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L10N_T1_34||align="center"|1516,97||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L10P_T1_34||align="center"|1517,37||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L15N_T2_DQS_34||align="center"|1610,74||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L15P_T2_DQS_34||align="center"|1602,81||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L16N_T2_34||align="center"|1601,55||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L16P_T2_34||align="center"|1616,03||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L17N_T2_34||align="center"|1574,33||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L17P_T2_34||align="center"|1593,38||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L18N_T2_34||align="center"|1740,11||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L18P_T2_34||align="center"|1750,54||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L20N_T3_34||align="center"|1588,01||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L20P_T3_34||align="center"|1585,53||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L21N_T3_DQS_34||align="center"|1567,1||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L21P_T3_DQS_34||align="center"|1570,96||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L22N_T3_34||align="center"|1619,26||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L22P_T3_34||align="center"|1622,13||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L23N_T3_34||align="center"|1769,71||align="center"|25||align="center"|300||BANK34 Diff group 1|-| IO_L23P_T3_34||align="center"|1775,52||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L24N_T3_34||align="center"|1772,07||align="center"|25||align="center"|300||BANK34 Diff group 1|- style="background: gray"| IO_L24P_T3_34||align="center"|1774,49||align="center"|25||align="center"|300||BANK34 Diff group 1|-style="background: black"| ''' '''|||||||||-| IO_L11N_T1_SRCC_34||align="center"|1817,43||align="center"|10||align="center"|50||BANK34 xRCC group|-| IO_L11P_T1_SRCC_34||align="center"|1823,9||align="center"|10||align="center"|50||BANK34 xRCC group|- style="background: gray"| IO_L12N_T1_MRCC_34||align="center"|1844,2||align="center"|10||align="center"|50||BANK34 xRCC group|- style="background: gray"| IO_L12P_T1_MRCC_34||align="center"|1841,36||align="center"|10||align="center"|50||BANK34 xRCC group|-| IO_L13N_T1_MRCC_34||align="center"|1811,51||align="center"|10||align="center"|50||BANK34 xRCC group|-| IO_L13P_T1_MRCC_34||align="center"|1818,58||align="center"|10||align="center"|50||BANK34 xRCC group|- style="background: gray"| IO_L14N_T2_SRCC_34||align="center"|1818,78||align="center"|10||align="center"|50||BANK34 xRCC group|- style="background: gray"| IO_L14P_T2_SRCC_34||align="center"|1822,02||align="center"|10||align="center"|50||BANK34 xRCC group|-|} The following table lists other signals that are not explicitly routed as differential pairs. Please note that some of these signals are internally used and thus they may have stubs.{| class="wikitable" border="1"| align="center" style="background:#f0f0f0;"|'''Bora pin name'''| align="center" style="background:#f0f0f0;"|'''Trace length<br>[Integration_guide_mils]'''| align="center" style="background:#f0f0f0;"|'''Stubs due to internal use'''|-| IO_0_34||align="center"|1643,08||yes (total length including stubs: 1900,20 mils)|-| IO_25_34||align="center"|1484,09||yes (total length including stubs: 1741,03 mils)|-| IO_L19N_T3_VREF_34||align="center"|1880,62||yes (total length including stubs: 1959,35 mils)|-| IO_L19P_T3_34||align="center"|1066,01||yes (Boratotal length including stubs: 1152,88 mils)|-| IO_L3N_T0_DQS_34||align="center"|1050,49||yes (total length including stubs: 1133,5 mils)|-| IO_L3P_T0_DQS_PUDC_B_34||align="center"|1201,39||yes (total length including stubs: 1385,82 mils)|-| IO_L6N_T0_VREF_34||align="center"|1347,42||no|-| IO_L6P_T0_34||align="center"|1583,33||yes (total length including stubs 1698,73: mils)|-| IO_L8N_T1_34||align="center"|1518,79||yes (total length including stubs 1730,58: mils)|-| IO_L8P_T1_34||align="center"|1212,67||yes (total length including stubs 1435,25: mils)#PL_bank_34 |-| PL } About power voltage, take into consideration that Bank 34 routing]]is fixed at 3.3V.
=== FPGA Bank 35 ===
The following table reports the available pins connected to bank 35:
{| class="wikitable" border="1"
| align="left" style="background:#f0f0f0;"|'''Notes'''
|-
| IO_0_35 || J1.74 || |-| IO_25_35 || J1.18 || |-| IO_L10N_T1_AD11N_35 || J1.6 || |-| IO_L10P_T1_AD11P_35 || J1.5 || |-| IO_L11N_T1_SRCC_35 || J1.10 || |-| IO_L11P_T1_SRCC_35 || J1.7 || |-| IO_L12N_T1_MRCC_35 || J1.27 || |-| IO_L12P_T1_MRCC_35 || J1.8 || |-| IO_L13N_T2_MRCC_35 || J1.39 || |-| IO_L13P_T2_MRCC_35 || J1.40 || |-| IO_L14N_T2_AD4N_SRCC_35 || J1.36 || |-| IO_L14P_T2_AD4P_SRCC_35 || J1.34 || |-| IO_L15N_T2_DQS_AD12N_35 || J1.47 || |-| IO_L15P_T2_DQS_AD12P_35 || J1.46 || |-| IO_L16N_T2_35 || J1.44 ||
|-
| IO_L16P_T2_35 || J1.45 ||
|-
| IO_L17N_T2_AD5N_35 || J1.37 ||
|-
| IO_L17P_T2_AD5P_35 || J1.32 ||
|-
| IO_L18N_T2_AD13N_35 || J1.42 ||
|-
| IO_L18P_T2_AD13P_35 || J1.43 ||
|-
| IO_L19N_T3_VREF_35 || J1.64 ||
|-
| IO_L19P_T3_35 || J1.41 ||
|-
| IO_L1N_T0_AD0N_35 || J1.53 ||
|-
| IO_L1P_T0_AD0P_35 || J1.50 ||
|-
| IO_L20N_T3_AD6N_35 || J1.23 ||
|-
| IO_L20P_T3_AD6P_35 || J1.21 ||
|-
| IO_L21N_T3_DQS_AD14N_35 || J1.33 ||
|-
| IO_L21P_T3_DQS_AD14P_35 || J1.31 ||
|-
| IO_L22N_T3_AD7N_35 || J1.26 ||
|-
| IO_L22P_T3_AD7P_35 || J1.25 ||
|-
| IO_L23N_T3_35 || J1.22 ||
|-
| IO_L23P_T3_35 || J1.28 ||
|-
| IO_L24N_T3_AD15N_35 || J1.16 ||
|-
| IO_L24P_T3_AD15P_35 || J1.20 ||
|-
| IO_L2N_T0_AD8N_35 || J1.51 || |-| IO_L2P_T0_AD8P_35 || J1.52 || |-| IO_L3N_T0_DQS_AD1N_35 || J1.63 || |-| IO_L3P_T0_DQS_AD1P_35 || J1.61 || |-| IO_L4N_T0_35 || J1.54 || |-| IO_L4P_T0_35 || J1.56 || |-| IO_L5N_T0_AD9N_35 || J1.55 || |-| IO_L5P_T0_AD9P_35 || J1.57 || |-| IO_L6N_T0_VREF_35 || J1.62 || |-| IO_L6P_T0_35 || J1.58 || |-| IO_L7N_T1_AD2N_35 || J1.11 || |-| IO_L7P_T1_AD2P_35 || J1.3 || |-| IO_L8N_T1_AD10N_35 || J1.9 || |-| IO_L8P_T1_AD10P_35 || J1.12 || |-| IO_L9N_T1_DQS_AD3N_35 || J1.17 || |-| IO_L9P_T1_DQS_AD3P_35 || J1.15 ||
|-
|}
On Bora side, routing of bank 35 has been optimized to interface 16-bit DDR3 SDRAM memory devices, clocked at a maximum frequency of 400 MHz. Regarding power voltage, Bank 35 is configurable and must be powered by carrier board. Please note that some signals belonging to this bank can be configured alternatively as XADC auxiliary analog inputs. For routing details, please refer to [[Integration_guide_(Bora)#PL_bank_35 | PL Bank 35 routing]].
====Routing information====
On Bora side, routing of bank 35 has been optimized to interface 16-bit DDR3 SDRAM memory devices, clocked at a maximum frequency of 400 MHz.
Signals have been grouped in the following classes:
* FDDR_ADDR
* FDDR_CK
* FDDR_BYTE0
* FDDR_BYTE1
Some of them are differential pairs. These kind of signals are highlighted in dark grey in the following sections where, for each signal, detailed information are provided, related to routing rules implemented on Bora SoM and carrier board guidelines.
Following tables indicates general recommended rules for single-ended and differantial pairs on carrier board in terms of impedence and isolation.
Differential pairs:
{| class="wikitable" border="1"
| align="center" style="background:#f0f0f0;"|''' '''
| align="center" style="background:#f0f0f0;"|''' Value '''
| align="center" style="background:#f0f0f0;"|''' UOM '''
|-
| Common Mode impedance typ||align="center"|55||align="center"|Ohm
|-
| Differential Mode impedance typ||align="center"|100||align="center"|Ohm
|-
| Isolation||align="center"|4x||align="center"|gap
|-
|}
Single-ended signals:
{| class="wikitable" border="1"
| align="center" style="background:#f0f0f0;"|''' '''
| align="center" style="background:#f0f0f0;"|''' Value '''
| align="center" style="background:#f0f0f0;"|''' UOM '''
|-
| Common Mode impedance typ||align="center"|55||align="center"|Ohm
|-
| Isolation||align="center"|2x||align="center"|width
|-
|}
About power voltage, Bank 35 is configurable and must be powered by carrier board.
Please note that some signals belonging to this bank can be configured alternatively as XADC auxiliary analog
inputs.
===== FDDR_ADDR class =====
Following table details routing rules implemented on Bora SoM and suggested carrier board guidelines for FDDR_ADDR class signals. The picture shows connection scheme and the nomenclature used in the table.
[[File:FDDR_ADDR.png|thumb|center|600px]]
{| class="wikitable" border="1"
! align="center" style="background:#f0f0f0;" rowspan="2" | '''Bora pin name'''
! align="center" style="background:#f0f0f0;" rowspan="2" | '''Group name'''
! align="center" style="background:#f0f0f0;" rowspan="2" | '''Carrier board net name'''
! align="center" style="background:#f0f0f0;" colspan="3" | '''SoM routing rules and specifications'''
! align="center" style="background:#f0f0f0;" colspan="6" | '''Carrier board guidelines'''
|-
! align="center" style="background:#f0f0f0;" | '''Actual length<br>[mils]'''
! align="center" style="background:#f0f0f0;" | '''Max length match<br>[mils]'''
! align="center" style="background:#f0f0f0;" | '''Nominal max length<br>[mils]'''
! align="center" style="background:#f0f0f0;" | '''AD_A2 length match<br>[mils]'''
! align="center" style="background:#f0f0f0;" | '''AD_AT length match<br>[mils]'''
! align="center" style="background:#f0f0f0;" | '''AD_AS1 length match<br>[mils]'''
! align="center" style="background:#f0f0f0;" | '''AD_AS1 max length<br>[mils]'''
! align="center" style="background:#f0f0f0;" | '''AD_AT max length<br>[mils]'''
! align="center" style="background:#f0f0f0;" | '''AD_A2+AD_AS1 max length<br>[mils]'''
|-
|IO_L17N_T2_AD5N_35||FDDR_ADDR||FDDR_ADDR_3||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L20P_T3_AD6P_35||FDDR_ADDR||FDDR_BA_2||align="center"|1853,4||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L16N_T2_35||FDDR_ADDR||FDDR_ADDR_5||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L18N_T2_AD13N_35||FDDR_ADDR||FDDR_ADDR_1||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L24N_T3_AD15N_35||FDDR_ADDR||FDDR_CKE_0||align="center"|1834,3||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L23P_T3_35||FDDR_ADDR||FDDR_CAS_N||align="center"|1857,01||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L14N_T2_AD4N_SRCC_35||FDDR_ADDR||FDDR_ADDR_9||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L24P_T3_AD15P_35||FDDR_ADDR||FDDR_CS0_N||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L14P_T2_AD4P_SRCC_35||FDDR_ADDR||FDDR_ADDR_10||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L15P_T2_DQS_AD12P_35||FDDR_ADDR||FDDR_ADDR_8||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L15N_T2_DQS_AD12N_35||FDDR_ADDR||FDDR_ADDR_7||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L12N_T1_MRCC_35||FDDR_ADDR||FDDR_RESET_N||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L13P_T2_MRCC_35||FDDR_ADDR||FDDR_ADDR_12||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L13N_T2_MRCC_35||FDDR_ADDR||FDDR_ADDR_11||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_25_35||FDDR_ADDR||FDDR_ODT_0||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L23N_T3_35||FDDR_ADDR||FDDR_WE_N||align="center"|1869,66||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L17P_T2_AD5P_35||FDDR_ADDR||FDDR_ADDR_4||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L22N_T3_AD7N_35||FDDR_ADDR||FDDR_RAS_N||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L20N_T3_AD6N_35||FDDR_ADDR||FDDR_BA_1||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L18P_T2_AD13P_35||FDDR_ADDR||FDDR_ADDR_2||align="center"|1853,7||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L16P_T2_35||FDDR_ADDR||FDDR_ADDR_6||align="center"|1832||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L22P_T3_AD7P_35||FDDR_ADDR||FDDR_BA_0||align="center"|1850,82||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
| IO_L19P_T3_35||FDDR_ADDR||FDDR_ADDR_0||align="center"|1836,73||align="center"|80||align="center"|1912||align="center"|40||align="center"|100||align="center"|50||align="center"|60||align="center"|400||align="center"|2100
|-
|}
===== FDDR_CK class =====
Following table details routing rules implemented on Bora SoM and suggested carrier board guidelines for FDDR_CK class signals. The picture shows connection scheme and the nomenclature used in the table.
[[File:FDDR_CK.png|thumb|center|600px]]
{| class="wikitable" border="1"
! align="center" style="background:#f0f0f0;" rowspan="2" |'''Bora pin name'''
! align="center" style="background:#f0f0f0;" rowspan="2" |'''Group name'''
! align="center" style="background:#f0f0f0;" rowspan="2" |'''Carrier board net name'''
! align="center" style="background:#f0f0f0;" colspan="4" |'''SoM routing rules and specifications'''
! align="center" style="background:#f0f0f0;" colspan="8" |'''Carrier board guidelines'''
|-
! align="center" style="background:#f0f0f0;"|'''Actual length<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Intra-pair match<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Max length match (with respect to FDDR_ADDR group)<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Nominal max length<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Intra-pair match<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''CK_A2 pair match (with respect to FDDR_ADDR)<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''CK_AT intra-pair match<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''CK_AS1 match (with respect to FDDR_ADDR)<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''CK_AS1 max length<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''CK_AT maximum length<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''CK_AT pair match (with respect to FDDR_ADDR)<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''CK_A2+CK_AS1 max length<br>[mils]'''
|- style="background: gray"
| IO_L21P_T3_DQS_AD14P_35||FDDR_CK||FDDR_CK_P0||align="center"|1900,39||align="center"|5||align="center"|80||align="center"|1912||align="center"|10||align="center"|40||align="center"|5||align="center"|50||align="center"|60||align="center"|400||align="center"|100||align="center"|2100
|- style="background: gray"
| IO_L21N_T3_DQS_AD14N_35||FDDR_CK||FDDR_CK_N0||align="center"|1898,17||align="center"|5||align="center"|80||align="center"|1912||align="center"|10||align="center"|40||align="center"|5||align="center"|50||align="center"|60||align="center"|400||align="center"|100||align="center"|2100
|-
|}
===== FDDR_BYTE0 class =====
Following table details routing rules implemented on Bora SoM and suggested carrier board guidelines for FDDR_BYTE0 class signals.
{| class="wikitable" border="1"
! align="center" style="background:#f0f0f0;" rowspan="2" |'''Pin Name'''
! align="center" style="background:#f0f0f0;" rowspan="2" |'''Group name'''
! align="center" style="background:#f0f0f0;" rowspan="2" |'''Carrier board net name'''
! align="center" style="background:#f0f0f0;" colspan="4" |'''SoM routing rules and specifications'''
! align="center" style="background:#f0f0f0;" colspan="3" |'''Carrier board guidelines'''
|-
! align="center" style="background:#f0f0f0;"|'''Actual length<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Max length match<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Max inter-pair match length on SOM<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Nominal max length<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Group match (mandatory)<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Intra-pair match (mandatory)<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Max length<br>[mils]'''
|-
| IO_L2N_T0_AD8N_35||FDDR_BYTE0||FDDR_DQ_2||align="center"|1222,66||align="center"|15||align="center"|-||align="center"|1230||align="center"|25||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L6P_T0_35||FDDR_BYTE0||FDDR_DQ_7||align="center"|1219,68||align="center"|15||align="center"|-||align="center"|1230||align="center"|25||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L5P_T0_AD9P_35||FDDR_BYTE0||FDDR_DQ_5||align="center"|1226,42||align="center"|15||align="center"|-||align="center"|1230||align="center"|25||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L4P_T0_35||FDDR_BYTE0||FDDR_DQ_3||align="center"|1219,68||align="center"|15||align="center"|-||align="center"|1230||align="center"|25||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L2P_T0_AD8P_35||FDDR_BYTE0||FDDR_DQ_1||align="center"|1219,68||align="center"|15||align="center"|-||align="center"|1230||align="center"|25||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L1N_T0_AD0N_35||FDDR_BYTE0||FDDR_DQ_0||align="center"|1219,68||align="center"|15||align="center"|-||align="center"|1230||align="center"|25||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L4N_T0_35||FDDR_BYTE0||FDDR_DQ_4||align="center"|1219,68||align="center"|15||align="center"|-||align="center"|1230||align="center"|25||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L5N_T0_AD9N_35||FDDR_BYTE0||FDDR_DQ_6||align="center"|1219,68||align="center"|15||align="center"|-||align="center"|1230||align="center"|25||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L1P_T0_AD0P_35||FDDR_BYTE0||FDDR_DM_0||align="center"|1219,68||align="center"|15||align="center"|-||align="center"|1230||align="center"|25||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|- style="background: gray"
| IO_L3P_T0_DQS_AD1P_35||FDDR_BYTE0||FDDR_DQS_P0||align="center"|1221,04||align="center"|15||align="center"|5||align="center"|1230||align="center"|25||align="center"|5||align="center"|CK_A2+CK_AS1(max)
|- style="background: gray"
| IO_L3N_T0_DQS_AD1N_35||FDDR_BYTE0||FDDR_DQS_N0||align="center"|1219,42||align="center"|15||align="center"|5||align="center"|1230||align="center"|25||align="center"|5||align="center"|CK_A2+CK_AS1(max)
|-
|}
===== FDDR_BYTE1 class =====
Following table details routing rules implemented on Bora SoM and suggested carrier board guidelines for FDDR_BYTE1 class signals.
{| class="wikitable" border="1"
! align="center" style="background:#f0f0f0;" rowspan="2" |'''Pin Name'''
! align="center" style="background:#f0f0f0;" rowspan="2" |'''Group name'''
! align="center" style="background:#f0f0f0;" rowspan="2" |'''Carrier board net name'''
! align="center" style="background:#f0f0f0;" colspan="4" |'''SoM routing rules and specifications'''
! align="center" style="background:#f0f0f0;" colspan="3" |'''Carrier board guidelines'''
|-
! align="center" style="background:#f0f0f0;"|'''Actual length<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Max length match<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Max inter-pair match length on SOM<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Nominal max length<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Group match (mandatory)<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Intra-pair match (mandatory)<br>[mils]'''
! align="center" style="background:#f0f0f0;"|'''Max length<br>[mils]'''
|-
| IO_L10N_T1_AD11N_35||FDDR_BYTE1||FDDR_DQ_12||align="center"|1345,93||align="center"|15||align="center"|-||align="center"|1355||align="center"|20||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L10P_T1_AD11P_35||FDDR_BYTE1||FDDR_DQ_11||align="center"|1345,93||align="center"|15||align="center"|-||align="center"|1355||align="center"|20||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L11P_T1_SRCC_35||FDDR_BYTE1||FDDR_DQ_13||align="center"|1353,43||align="center"|15||align="center"|-||align="center"|1355||align="center"|20||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L12P_T1_MRCC_35||FDDR_BYTE1||FDDR_DQ_15||align="center"|1341,3||align="center"|15||align="center"|-||align="center"|1355||align="center"|20||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L11N_T1_SRCC_35||FDDR_BYTE1||FDDR_DQ_14||align="center"|1340||align="center"|15||align="center"|-||align="center"|1355||align="center"|20||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L8P_T1_AD10P_35||FDDR_BYTE1||FDDR_DQ_9||align="center"|1340||align="center"|15||align="center"|-||align="center"|1355||align="center"|20||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L7N_T1_AD2N_35||FDDR_BYTE1||FDDR_DQ_8||align="center"|1340||align="center"|15||align="center"|-||align="center"|1355||align="center"|20||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L8N_T1_AD10N_35||FDDR_BYTE1||FDDR_DQ_10||align="center"|1340||align="center"|15||align="center"|-||align="center"|1355||align="center"|20||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|-
| IO_L7P_T1_AD2P_35||FDDR_BYTE1||FDDR_DM_1||align="center"|1345,93||align="center"|15||align="center"|-||align="center"|1355||align="center"|20||align="center"|-||align="center"|CK_A2+CK_AS1(max)
|- style="background: gray"
| IO_L9P_T1_DQS_AD3P_35||FDDR_BYTE1||FDDR_DQS_P1||align="center"|1354,26||align="center"|15||align="center"|5||align="center"|1355||align="center"|20||align="center"|5||align="center"|CK_A2+CK_AS1(max)
|- style="background: gray"
| IO_L9N_T1_DQS_AD3N_35||FDDR_BYTE1||FDDR_DQS_N1||align="center"|1350,66||align="center"|15||align="center"|5||align="center"|1355||align="center"|20||align="center"|5||align="center"|CK_A2+CK_AS1(max)
|-
|}
==== VREF ====
Recommendations:
* use a "T" connection as shown by following picture
* use 20+ mils trace
* place bypass capacitors as close as possible to power balls.
[[File:VREF.png|thumb|center|600px]]
==== Other signals ====
The following table lists other signals that do not follow specific routing rules.
{| class="wikitable" border="1"
| align="center" style="background:#f0f0f0;"|'''Bora pin name'''
| align="center" style="background:#f0f0f0;"|'''Trace length<br>[mils]'''
|-
| IO_0_35||align="center"|1171,03
|-
| IO_L19N_T3_VREF_35||align="center"|2053,07
|-
| IO_L6N_T0_VREF_35||align="center"|2295,83
|-
|}
===== Related Xilinx documentation =====
* [http://www.xilinx.com/support/documentation/ip_documentation/mig_7series/v2_0/ug586_7Series_MIS.pdf Xilinx Memory Interface Solutions UG586]
* [http://www.xilinx.com/support/documentation/ip_documentation/mig_7series/v2_0/ds176_7Series_MIS.pdf Xilinx Memory Interface Solutions Data Sheet]
=== FPGA Bank 13 (Zynq 7020 only) ===
N.B. Although BANK 13 is not available on Bora SOMs equipped with the XC7Z010 SOC, '''VDDIO_BANK13 pins must not be left open and must be connected anyway''', either to ground or to an external I/O voltage as described in [[Programmable_logic_(Bora)#Introduction | I/O banks table]].
The following table reports the available pins connected to bank 13:
| align="left" style="background:#f0f0f0;"|'''Notes'''
|-
| IO_L11N_T1_SRCC_13 || J3.136 || |-| IO_L11P_T1_SRCC_13 || J3.134 || |-| IO_L12N_T1_MRCC_13 || J3.137 || |-| IO_L12P_T1_MRCC_13 || J3.135 || |-| IO_L13N_T2_MRCC_13 || J3.130 ||
|-
| IO_L13P_T2_MRCC_13 || J3.128 ||
|-
| IO_L14N_T2_SRCC_13 || J3.131 ||
|-
| IO_L14P_T2_SRCC_13 || J3.129 ||
|-
| IO_L15N_T2_DQS_13 || J3.124 ||
|-
| IO_L15P_T2_DQS_13 || J3.122 ||
|-
| IO_L16N_T2_13 || J3.125 ||
|-
| IO_L16P_T2_13 || J3.123 ||
|-
| IO_L17N_T2_13 || J3.118 ||
|-
| IO_L17P_T2_13 || J3.116 ||
|-
| IO_L18N_T2_13 || J3.119 ||
|-
| IO_L18P_T2_13 || J3.117 ||
|-
| IO_L19N_T3_VREF_13 || J3.113 ||
|-
| IO_L19P_T3_13 || J3.111 ||
|-
| IO_L20N_T3_13 || J3.112 ||
|-
| IO_L20P_T3_13 || J3.110 ||
|-
| IO_L21N_T3_DQS_13 || J3.107 ||
|-
| IO_L21P_T3_DQS_13 || J3.105 ||
|-
| IO_L22N_T3_13 || J3.106 ||
|-
| IO_L22P_T3_13 || J3.104 ||
|-
| IO_L6N_T0_VREF_13 || J3.100 ||
|-
|}
Regarding power voltage, Bank 13 is configurable and must be powered by carrier board. For routing details, please refer to [[Integration_guide_(Bora)#PL_bank_13_.28XC7Z020_only.29 | PL Bank 13 routing]].
====Routing information====
Routing implemented on Bora SoM allows the use of bank 13's signals as differential pairs as well as single-ended lines. Signals are grouped as denoted by the following table that details routing rules on Bora module. No carrier board guidelines can be provided, because these are application-dependent.
Pairs are highlighted with different colors. When used as differential pairs, differential impedence is 100 Ohm. When used as single-ended signals, impedence is 50 Ohm.
{| class="wikitable" border="1"
| align="center" style="background:#f0f0f0;"|'''Bora pin name'''
| align="center" style="background:#f0f0f0;"|'''Individual net length<br>[mils]'''
| align="center" style="background:#f0f0f0;"|'''Intra-pair match<br>[mils]'''
| align="center" style="background:#f0f0f0;"|'''Inter-pair match<br>[mils]'''
| align="center" style="background:#f0f0f0;"|'''Group Name'''
|-
| IO_L15N_T2_DQS_13||align="center"|1582,37||align="center"|25||align="center"|200||BANK13 Diff group 1
|-
| IO_L15P_T2_DQS_13||align="center"|1602,37||align="center"|25||align="center"|200||BANK13 Diff group 1
|- style="background: gray"
| IO_L16N_T2_13||align="center"|1589,32||align="center"|25||align="center"|200||BANK13 Diff group 1
|- style="background: gray"
| IO_L16P_T2_13||align="center"|1602,33||align="center"|25||align="center"|200||BANK13 Diff group 1
|-
| IO_L17N_T2_13||align="center"|1710,41||align="center"|25||align="center"|200||BANK13 Diff group 1
|-
| IO_L17P_T2_13||align="center"|1722,73||align="center"|25||align="center"|200||BANK13 Diff group 1
|- style="background: gray"
| IO_L18N_T2_13||align="center"|1720,53||align="center"|25||align="center"|200||BANK13 Diff group 1
|- style="background: gray"
| IO_L18P_T2_13||align="center"|1712,11||align="center"|25||align="center"|200||BANK13 Diff group 1
|-
| IO_L19N_T3_VREF_13||align="center"|1585,55||align="center"|25||align="center"|200||BANK13 Diff group 1
|-
| IO_L19P_T3_13||align="center"|1602,96||align="center"|25||align="center"|200||BANK13 Diff group 1
|- style="background: gray"
| IO_L20N_T3_13||align="center"|1623,95||align="center"|25||align="center"|200||BANK13 Diff group 1
|- style="background: gray"
| IO_L20P_T3_13||align="center"|1626,27||align="center"|25||align="center"|200||BANK13 Diff group 1
|-
| IO_L21N_T3_DQS_13||align="center"|1661,55||align="center"|25||align="center"|200||BANK13 Diff group 1
|-
| IO_L21P_T3_DQS_13||align="center"|1668,95||align="center"|25||align="center"|200||BANK13 Diff group 1
|- style="background: gray"
| IO_L22N_T3_13||align="center"|1592,18||align="center"|25||align="center"|200||BANK13 Diff group 1
|- style="background: gray"
| IO_L22P_T3_13||align="center"|1577,63||align="center"|25||align="center"|200||BANK13 Diff group 1
|-style="background: black"
| ''' '''||||||||
|-
| IO_L11N_T1_SRCC_13||align="center"|1702,04||align="center"|10||align="center"|50||BANK13 xRCC group
|-
| IO_L11P_T1_SRCC_13||align="center"|1705,07||align="center"|10||align="center"|50||BANK13 xRCC group
|- style="background: gray"
| IO_L12N_T1_MRCC_13||align="center"|1704,42||align="center"|10||align="center"|50||BANK13 xRCC group
|- style="background: gray"
| IO_L12P_T1_MRCC_13||align="center"|1703,11||align="center"|10||align="center"|50||BANK13 xRCC group
|-
| IO_L13N_T2_MRCC_13||align="center"|1731,33||align="center"|10||align="center"|50||BANK13 xRCC group
|-
| IO_L13P_T2_MRCC_13||align="center"|1732,15||align="center"|10||align="center"|50||BANK13 xRCC group
|- style="background: gray"
| IO_L14N_T2_SRCC_13||align="center"|1710,12||align="center"|10||align="center"|50||BANK13 xRCC group
|- style="background: gray"
| IO_L14P_T2_SRCC_13||align="center"|1716,36||align="center"|10||align="center"|50||BANK13 xRCC group
|-
|}
==== Other signals ====
The following table lists other signals that do not follow specific routing rules.
{| class="wikitable" border="1"
| align="center" style="background:#f0f0f0;"|'''Bora pin name'''
| align="center" style="background:#f0f0f0;"|'''Trace length<br>[mils]'''
|-
| IO_L6N_T0_VREF_13||align="center"|1098,15
|-
|}
<section end=Body/>
