Author Topic: TE0701 and TE0820 connectivity  (Read 802 times)

shp

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TE0701 and TE0820 connectivity
« on: June 09, 2021, 03:52:26 AM »
Hi,

I am trying to find where the FPGA pins AC9 and AB3  (TE0820  board pins B64_L1_P and B64_L15_N respectively) connect on the carrier board TE0701. (schematic: https://shop.trenz-electronic.de/trenzdownloads/Trenz_Electronic/Modules_and_Module_Carriers/4x5/TE0820/REV04/Documents/SCH-TE0820-04-3BE21FA.PDF)

The information is not available in the pinout table: https://shop.trenz-electronic.de/trenzdownloads/Trenz_Electronic/Pinout/TE0701_FMC_PINOUT.pdf.

Eventually I want to use these pins for I2C commn but just wanted to make sure where these are connected on the carrier board.

Thanks,
Sharath


shp

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Re: TE0701 and TE0820 connectivity
« Reply #2 on: June 09, 2021, 02:25:39 PM »
Hi John,

Thank you for your response; it is very helpful.

I have a couple of components on my custom board with I2C interface whose SCL, SDA are connected to the FMC_SCL, FMC_SDA pins (C30, C31 on J10).

If I issue I2C commands from the FPGA (on TE0820 board), will the CPLD U14 pass on the the signals to FMC_SCL, FMC_SDA? (and eventually to the components on the I2C bus)

Thanks,
Sharath

JH

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Re: TE0701 and TE0820 connectivity
« Reply #3 on: June 11, 2021, 06:45:01 AM »
Hi,
Quote
will the CPLD U14 pass on the the signals to FMC_SCL, FMC_SDA? (and eventually to the components on the I2C bus)

yes, tree wire I2C to 2 wire I2C, see:
https://wiki.trenz-electronic.de/display/PD/TE0701+CPLD#TE0701CPLD-FMCI2C
br
John

shp

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Re: TE0701 and TE0820 connectivity
« Reply #4 on: June 11, 2021, 07:36:01 PM »
I get it now. Thanks again!

-Sharath