While trying to connect my oscilloscope to the PS140/SP144 Development kit, I was using pin 1 on J8 as my ground point. As soon as I connected the oscilloscope ground it killed the board (LED turned off, board unresponsive).
Upon checking the J8 UEXT connector, it looks like the pinout specified in the SP140 Development Platform Hardware Guide is wrong. Or what is probably more likely is that the silkscreen on the board indicating pins 1 and 2 is wrong.
Pin Documented Actual
1 GND +3.3V
2 +3.3V GND
3 UART_RXD unable to verify yet, but assume this is actually UART_TXD
4 UART_TXD corresponds to pin12 on the SP144 (UART0_TXD)
5 SPI_INT CHIP_PWD#
6 CHIP_PWD# SPI_INT
7 SPI_MOSI SPI_MISO
8 SPI_MISO SPI_MOSI
9 SPI_CS# SPI_CLK
10 SPI_CLK SPI_CS#
Can we get the documentation and/or the silkscreen corrected?
thanks for the correction . We will check and fix .