Difference between revisions of "AXEL Lite SOM/AXEL Lite Hardware/Power and Reset/JTAG"

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!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:#73B2C7; padding:5px; color:white"|Issue Date
 
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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:#73B2C7; padding:5px; color:white"|Notes
 
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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"|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"|New layout documentation
 
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__FORCETOC__
 
__FORCETOC__
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<section begin=Body/>
  
 
==On board JTAG connector==
 
==On board JTAG connector==
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[[File:Axellite-jtag-conn.png|500px|frameless|border]]
 
[[File:Axellite-jtag-conn.png|500px|frameless|border]]
  
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=== J7 - SOM Connector's pinout ===
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=== J7 - Connector's pinout ===
  
 
J7 footprint mates with Samtec FSI-110-03-G-S connector. The following table reports the connector's pinout:  
 
J7 footprint mates with Samtec FSI-110-03-G-S connector. The following table reports the connector's pinout:  
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[[File:AXEL Lite-EVB-JTAG-connector.png|thumb|center| 500px|JTAG connector]]
 
  
 
{| class="wikitable"  
 
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!Pin name
 
!Pin name
 
!Function
 
!Function
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!ARM-20 JTAG
 
 
!Notes
 
!Notes
 
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|-
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|1 || DGND || -  
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|1 || DGND || - || -
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|4,6,8,10,12,14,16,18,20|| For example documented on [https://www2.lauterbach.com/pdf/app_arm_jtag.pdf#page=3 Lauterbach specification]
 
 
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|2 || JTAG_TCK || -  
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|2 || JTAG_TCK || - || -
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|9|| -
 
 
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|3 || JTAG_TMS || -  
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|3 || JTAG_TMS || - || 10K pull-up to 3V3 (BOARD_PGOOD driven signal)
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|7|| 10K pull-up to 3V3 (BOARD_PGOOD driven signal)
 
 
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|-
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|4 || JTAG_TDO || -  
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|4 || JTAG_TDO || - || 10K pull-up to 3V3 (BOARD_PGOOD driven signal)
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|13|| 10K pull-up to 3V3 (BOARD_PGOOD driven signal)
 
 
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|5 || JTAG_TDI || -  
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|5 || JTAG_TDI || - || 10K pull-up to 3V3 (BOARD_PGOOD driven signal)
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|5|| 10K pull-up to 3V3 (BOARD_PGOOD driven signal)
 
 
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|-
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|6 || JTAG_nTRST || -  
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|6 || JTAG_nTRST || - || 10K pull-up to 3V3 (BOARD_PGOOD driven signal)
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|3 (*) || 10K pull-up to 3V3 (BOARD_PGOOD driven signal)
 
 
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|7 || CPU_PORn || -  
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|7 || CPU_PORn || - || -
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|15 (*)|| -
 
 
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|8 || N.C. || -  
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|8 || N.C. || - || -
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||| -
 
 
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|9 || N.C. || -  
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|9 || N.C. || - || -
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||| -
 
 
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|10 || JTAG_VREF || -  
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|10 || JTAG_VREF || - || 3V3 (BOARD_PGOOD driven signal)
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|1|| 3V3 (BOARD_PGOOD driven signal)
 
 
|-
 
|-
 
|}
 
|}
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(*) keep the possibility to be unconnected
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 +
 
 
----
 
----
  
 
[[Category:AXEL Lite]]
 
[[Category:AXEL Lite]]

Revision as of 09:23, 27 October 2020

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History
Version Issue Date Notes
1.0.0 Sep 2020 New layout documentation



On board JTAG connector[edit | edit source]

JTAG signals are routed to a dedicated connector on the AXEL Lite PCB.

The connector is placed on the top side of the PCB, at the upper-right corner (please see the picture below).

Axellite-jtag-conn.png

J7 - Connector's pinout[edit | edit source]

J7 footprint mates with Samtec FSI-110-03-G-S connector. The following table reports the connector's pinout:

Pin# Pin name Function Notes
1 DGND - -
2 JTAG_TCK - -
3 JTAG_TMS - 10K pull-up to 3V3 (BOARD_PGOOD driven signal)
4 JTAG_TDO - 10K pull-up to 3V3 (BOARD_PGOOD driven signal)
5 JTAG_TDI - 10K pull-up to 3V3 (BOARD_PGOOD driven signal)
6 JTAG_nTRST - 10K pull-up to 3V3 (BOARD_PGOOD driven signal)
7 CPU_PORn - -
8 N.C. - -
9 N.C. - -
10 JTAG_VREF - 3V3 (BOARD_PGOOD driven signal)


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Roadmap IoT Services ML/AI services Embedded Design Services
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