Enhanced Serial Audio Interface_1 - Freescale Semiconductor DSP56374 User Manual

Enhanced Serial Audio Interface_1

Table 2-8. Enhanced Serial Audio Interface Signals (continued)
Signal Name Signal Type
SDO0
PC11 Input, Output, or
Disconnected
2.9 Enhanced Serial Audio Interface_1
Signal Name Signal Type
HCKR_1 Input or Output
PE2 Input, Output, or
Disconnected
HCKT_1 Input or Output
PE5 Input, Output, or
Disconnected
2-12
State during
Reset
Output GPIO
Disconnected
Table 2-9. Enhanced Serial Audio Interface_1 Signals
State during
Reset
GPIO
Disconnected
GPIO
Disconnected
DSP56374 Users Guide, Rev. 1.2
Signal Description
Serial Data Output 0—SDO0 is used to transmit data from
the TX0 serial transmit shift register.
Port C11—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.
Signal Description
High Frequency Clock for Receiver—When programmed
as an input, this signal provides a high frequency clock
source for the ESAI_1 receiver as an alternate to the DSP
core clock. When programmed as an output, this signal can
serve as a high-frequency sample clock (e.g., for external
digital to analog converters [DACs]) or as an additional
system clock.
Port E2—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.
High Frequency Clock for Transmitter—When
programmed as an input, this signal provides a high
frequency clock source for the ESAI_1 transmitter as an
alternate to the DSP core clock. When programmed as an
output, this signal can serve as a high frequency sample
clock (e.g., for external DACs) or as an additional system
clock.
Port E5—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.
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