参数资料
| 型号： | SOUNDBITE |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 20/68页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO AUDIO DEVELOPMENT |
| 标准包装： | 1 |
| 系列： | Symphony™ soundBite |
| 主要目的： | 音频，音频处理 |
| 已用 IC / 零件： | DSPB56371 |
| 主要属性： | 最高 8 通道数字音频 |
| 次要属性： | USB、I2C、SPI 接口 |
| 已供物品： | 板，缆线，CD |
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Signal/Connection Descriptions
Table 8. Enhanced Serial Audio Interface Signals (continued)
Signal
Name
FSR
Signal Type
Input or output
State during
Reset
GPIO
disconnected
Signal Description
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 C1 —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.
Internal Pull down resistor.
This input is 5 V tolerant.
FST
Input or output
GPIO
disconnected
Frame Sync for Transmitter —This is the transmitter frame sync
input/output signal. For synchronous mode, this signal is the frame
sync for both transmitters and receivers. For asynchronous mode,
FST is the frame sync for the transmitters only. The direction is
determined by the transmitter frame sync direction (TFSD) bit in the
ESAI transmit clock control register (TCCR).
20
PC4
Input, output, or
disconnected
Port C4 —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.
Internal Pull down resistor.
This input is 5 V tolerant.
DSP56371 Data Sheet, Rev. 4.1
Freescale Semiconductor
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