ZHCSK43A August 2019 – November 2019 TCAN4551-Q1
PRODUCTION DATA.
This pin defaults out as the M_CAN_INT 1 (active low) interrupt. The functionality of the pin can be changed to a configurable output function pin by setting register 16'h0800[15:14] = 00. The GPO function is further configured by using register 16'h0800[11:10].
When in test mode the GPO1 pin is used to provide the input signal for the transceiver (TXD_INT_PHY) or the input to the M_CAN core (RXD_INT_CAN). This is accomplished by first putting the device into test mode using register 16'h0800[21] = 1 and then selecting which part of the device is to be tested by setting register 16'h0800[0]