Freescale Semiconductor DSP56374 User Manual page 43

Table 2-9. Enhanced Serial Audio Interface_1 Signals (continued)
Signal Name Signal Type
SDO4_1 Output
SDI1_1
PE7 Input, Output, or
Disconnected
SDO3_1 Output
SDI2_1
PE8 Input, Output, or
Disconnected
SDO2_1 Output
SDI3_1
PE9 Input, Output, or
Disconnected
SDO1_1 Output
PE10 Input, Output, or
Disconnected
Freescale Semiconductor
State during
Reset
GPIO
Disconnected
Input
GPIO
Disconnected
Input
GPIO
Disconnected
Input
GPIO
Disconnected
DSP56374 Users Guide, Rev. 1.2
Signal Description
Serial Data Output 4_1—When programmed as a
transmitter, SDO4_1 is used to transmit data from the TX4
serial transmit shift register.
Serial Data Input 1_1—When programmed as a receiver,
SDI1_1 is used to receive serial data into the RX1 serial
receive shift register.
Port E7—When the ESAI_1 is configured as GPIO, this
signal is individually programmable as input, output, or
internally disconnected.
The default state after reset is GPIO disconnected.
This pin has an internal pull-down resistor.
This input is 5 V tolerant.
Serial Data Output 3—When programmed as a
transmitter, SDO3_1 is used to transmit data from the TX3
serial transmit shift register.
Serial Data Input 2—When programmed as a receiver,
SDI2_1 is used to receive serial data into the RX2 serial
receive shift register.
Port E8—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 pin has an internal pull-down resistor.
This input is 5 V tolerant.
Serial Data Output 2—When programmed as a
transmitter, SDO2_1 is used to transmit data from the TX2
serial transmit shift register.
Serial Data Input 3—When programmed as a receiver,
SDI3_1 is used to receive serial data into the RX3 serial
receive shift register.
Port E9—When the ESAI_1 is configured as GPIO, this
signal is individually programmable as input, output, or
internally disconnected.
The default state after reset is GPIO disconnected.
This pin has an internal pull-down resistor.
This input is 5 V tolerant.
Serial Data Output 1—SDO1_1 is used to transmit data
from the TX1 serial transmit shift register.
Port E10—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 pin has an internal pull-down resistor.
This input is 5 V tolerant.
Enhanced Serial Audio Interface_1
2-15