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Programmable logic (Bora)

1,675 bytes added, 08:02, 2 April 2014
Created page with "{{InfoBoxTop}} {{Applies To Bora}} {{InfoBoxBottom}} == Introduction == The following paragraphs describe in detail the available PL I/O pins and how they are routed to the ..."
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{{Applies To Bora}}
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== Introduction ==

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.
For more details about PCB design considerations, please refer to the [[Integration_guide_(Bora)#Advanced_routing_and_carrier_board_design_guidelines | Advanced routing and carrier board design guidelines]] article.

The following table reports the I/O banks characteristics:

{| class="wikitable"
|-
!FPGA Bank
!I/O Voltage
!Voltage Pins
!Notes
|-
|Bank 35
|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
|Fixed<br>VIO=3.3 V
| -
|
|-
|Bank 13
|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
|-
|}

Each user I/O is labeled IO_LXXY_Tn_ZZZ_ADi_#, where:
* IO indicates a user I/O pin.
* L indicates a differential pair, with XX a unique pair in the bank and Y = [P|N] for the positive/negative sides of the differential pair.
* Tn indicates the memory byte group [0-3]
* ZZZ indicates a MRCC, SRCC or DQS pin
* ADi indicates a XADC (analog-to-digital converter) differential auxiliary analog input [0–15].
* # indicates the bank number.

Highlighted rows are related to signals that are used for particular functions into the SOM.

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