Hi all,
for ISO7816, three pins are used for communication.
CLK, I/O and RST.
I/O
I will connect I/O with UART0_TX, for I could see in some document UART_TX could be configured to I/O pin for 7816 standard.
also, UART0 are the only one which supports ISO7816 in K22 120MHz.
RST
i will connect RST to UART0_RTS_b.
CLK
i see this information in the forum as well. CLK is suggested to tie with FTM.
i am gonna connect this with FTM0_CH5. is this feasible?
as far as i learn from the reference manual, it seems configurable though.
is the way connection gonna work for SW?
thanks,
Lawrence
Hi Lawrence,
I am sorry, but the ISO7816 RST signal is a reset signal, not the function of UART RTS(Request to send), so if you connected RST to UART0_RTS_b, you should configure this pin as GPIO function, not the UART0_RTS_b function.
Hope that helps,
Have a great day,
Kan
Freescale Technical Support
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