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Table 2-11 Enhanced Serial Audio Interface Signals (Continued)
Signal
Signal Type
Name
SDO4
Output
SDI1
Input
PC7
Input, output, or
disconnected
SDO3/SD
Output
O3_1
SDI2/SDI
Input
2_1
PC8/PE8
Input, output, or
disconnected
SDO2/SD
Output
O2_1
SDI3/SDI
Input
3_1
PC9/PE9
Input, output, or
disconnected
SDO1/SD
Output
O1_1
PC10/PE1
Input, output, or
0
disconnected
MOTOROLA
State during Reset
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 3.3V tolerant.
GPIO disconnected
Serial Data Output 3—When programmed as a transmitter, SDO3 is used to
transmit data from the TX3 serial transmit shift register.
When enabled for ESAI_1 operation, this is the ESAI_1 Serial Data Output 3.
Serial Data Input 2—When programmed as a receiver, SDI2 is used to
receive serial data into the RX2 serial receive shift register.
When enabled for ESAI_1 operation, this is the ESAI_1 Serial Data Input 2.
Port C 8—When the ESAI is configured as GPIO, this signal is individually
programmable as input, output, or internally disconnected.
When enabled for ESAI_1 GPIO, this is the Port E 8 signal.
The default state after reset is GPIO disconnected.
This input is 3.3V tolerant.
GPIO disconnected
Serial Data Output 2—When programmed as a transmitter, SDO2 is used to
transmit data from the TX2 serial transmit shift register.
When enabled for ESAI_1 operation, this is the ESAI_1 Serial Data Output 2.
Serial Data Input 3—When programmed as a receiver, SDI3 is used to
receive serial data into the RX3 serial receive shift register.
When enabled for ESAI_1 operation, this is the ESAI_1 Serial Data Input 3.
Port C 9—When the ESAI is configured as GPIO, this signal is individually
programmable as input, output, or internally disconnected.
When enabled for ESAI_1 GPIO, this is the Port E 9 signal.
The default state after reset is GPIO disconnected.
This input is 3.3V tolerant.
GPIO disconnected
Serial Data Output 1—SDO1 is used to transmit data from the TX1 serial
transmit shift register.
When enabled for ESAI_1 operation, this is the ESAI_1 Serial Data Output 1.
Port C 10—When the ESAI is configured as GPIO, this signal is individually
programmable as input, output, or internally disconnected.
When enabled for ESAI_1 GPIO, this is the Port E 10 signal.
The default state after reset is GPIO disconnected.
This input is 3.3V tolerant.
DSP56367
Signal/Connection Descriptions
Enhanced Serial Audio Interface
Signal Description
2-17
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