參數(shù)資料
型號: SPAKD56366PV120
廠商: MOTOROLA INC
元件分類: 數(shù)字信號處理
英文描述: 24-BIT, 120 MHz, OTHER DSP, PQFP144
封裝: TQFP-144
文件頁數(shù): 62/147頁
文件大小: 2156K
代理商: SPAKD56366PV120
Signal/Connection Descriptions
Enhanced Serial Audio Interface
MOTOROLA
DSP56366 Advance Information
1-17
ENHANCED SERIAL AUDIO INTERFACE
Table 1-11 Enhanced Serial Audio Interface Signals
Signal
Name
Signal Type
State during
Reset
Signal Description
HCKR
Input or output
GPIO
disconnected
High Frequency Clock for Receiver—When programmed as an input,
this signal provides a high frequency clock source for the ESAI 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.
PC2
Input, output, or
disconnected
Port C 2—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.
HCKT
Input or output
GPIO
disconnected
High Frequency Clock for Transmitter—When programmed as an input,
this signal provides a high frequency clock source for the ESAI 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.
PC5
Input, output, or
disconnected
Port C 5—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.
FSR
Input or output
GPIO
disconnected
Frame Sync for Receiver—This is the receiver frame sync input/output
signal. In the asynchronous mode (SYN=0), the FSR pin operates as the
frame sync input or output used by all the enabled receivers. In the
synchronous mode (SYN=1), it operates as either the serial flag 1 pin
(TEBE=0), or as the transmitter external buffer enable control (TEBE=1,
RFSD=1).
When this pin is configured as serial flag pin, its direction is determined by
the RFSD bit in the RCCR register. When configured as the output flag
OF1, this pin will reflect the value of the OF1 bit in the SAICR register,
and the data in the OF1 bit will show up at the pin synchronized to the
frame sync in normal mode or the slot in network mode. When configured
as the input flag IF1, the data value at the pin will be stored in the IF1 bit in
the SAISR register, synchronized by the frame sync in normal mode or the
slot in network mode.
PC1
Input, output, or
disconnected
Port C 1—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.
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