
Enhanced Serial Audio Interface
DSP56364 24-Bit Digital Signal Processor Users Manual, Rev. 2
2-12 Freescale Semiconductor
SDO5 Output GPIO
disconnected
Serial Data Output 5—When programmed as a transmitter, SDO5 is used
to transmit data from the TX5 serial transmit shift register.
SDI0 Input Serial Data Input 0—When programmed as a receiver, SDI0 is used to
receive serial data into the RX0 serial receive shift register.
PC6 Input, output, or
disconnected
Port C 6—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.
SDO4 Output GPIO
disconnected
Serial Data Output 4—When programmed as a transmitter, SDO4 is used
to transmit data from the TX4 serial transmit shift register.
SDI1 Input Serial Data Input 1—When programmed as a receiver, SDI1 is used to
receive serial data into the RX1 serial receive shift register.
PC7 Input, output, or
disconnected
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 Output GPIO
disconnected
Serial Data Output 3—When programmed as a transmitter, SDO3 is used
to transmit data from the TX3 serial transmit shift register.
SDI2 Input Serial Data Input 2—When programmed as a receiver, SDI2 is used to
receive serial data into the RX2 serial receive shift register.
PC8 Input, output, or
disconnected
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 Output GPIO
disconnected
Serial Data Output 2—When programmed as a transmitter, SDO2 is used
to transmit data from the TX2 serial transmit shift register
SDI3 Input Serial Data Input 3—When programmed as a receiver, SDI3 is used to
receive serial data into the RX3 serial receive shift register.
PC9 Input, output, or
disconnected
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.
Table 2-10 Enhanced Serial Audio Interface Signals (continued)
Signal
Name
Signal Type
State during
Reset
Signal Description
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