Enhanced Serial Audio Interface
DSP56362 Technical Data, Rev. 4
2-18
Freescale Semiconductor
SDO4
SDI1
PC7
Output
Input
Input, Output, or
Disconnected
GPIO Disconnected Serial Data Output 4—When programmed as a transmitter, SDO4 is
used to transmit data from the TX4 serial transmit shift register.
Serial Data Input 1—When programmed as a receiver, SDI1 is used
to receive serial data into the RX1 serial receive shift register.
Port C 7—When the ESAI is configured as GPIO, this signal is
individually programmable as input, output, or internally disconnected.
The default state after reset is GPIO disconnected.
This input is 5 V tolerant.
SDO3
SDI2
PC8
Output
Input
Input, Output, or
Disconnected
GPIO Disconnected Serial Data Output 3—When programmed as a transmitter, SDO3 is
used to transmit data from the TX3 serial transmit shift register.
Serial Data Input 2—When programmed as a receiver, SDI2 is used
to receive serial data into the RX2 serial receive shift register.
Port C 8—When the ESAI is configured as GPIO, this signal is
individually programmable as input, output, or internally disconnected.
The default state after reset is GPIO disconnected.
This input is 5 V tolerant.
SDO2
SDI3
PC9
Output
Input
Input, Output, or
Disconnected
GPIO Disconnected Serial Data Output 2—When programmed as a transmitter, SDO2 is
used to transmit data from the TX2 serial transmit shift register.
Serial Data Input 3—When programmed as a receiver, SDI3 is used
to receive serial data into the RX3 serial receive shift register.
Port C 9—When the ESAI is configured as GPIO, this signal is
individually programmable as input, output, or internally disconnected.
The default state after reset is GPIO disconnected.
This input is 5 V tolerant.
SDO1
PC10
Output
Input, Output, or
Disconnected
GPIO Disconnected Serial Data Output 1—SDO1 is used to transmit data from the TX1
serial transmit shift register.
Port C 10—When the ESAI is configured as GPIO, this signal is
individually programmable as input, output, or internally disconnected.
The default state after reset is GPIO disconnected.
This input is 5 V tolerant.
SDO0
PC11
Output
Input, Output, or
Disconnected
GPIO Disconnected Serial Data Output 0—SDO0 is used to transmit data from the TX0
serial transmit shift register.
Port C 11—When the ESAI is configured as GPIO, this signal is
individually programmable as input, output, or internally disconnected.
The default state after reset is GPIO disconnected.
This input is 5 V tolerant.
Table 2-11 Enhanced Serial Audio Interface Signals (continued)
Signal
Name
Signal Type
State during Reset
Signal Description