參數(shù)資料
型號(hào)： DSPE56007FJ88
英文描述： DSP|24-BIT|CMOS|QFP|80PIN|PLASTIC
中文描述： 數(shù)字信號(hào)處理器| 24位|的CMOS | QFP封裝| 80腳|塑料
文件頁(yè)數(shù)： 21/83頁(yè)
文件大小： 382K
代理商： DSPE56007FJ88
Signal/Connection Descriptions
Serial Audio Interface (SAI)
MOTOROLA
DSP56007/D
1-15
SAI Transmitter Section
Table 1-10
Serial Audio Interface (SAI) Transmitter signals
Signal
Name
Signal
Type
State
during
Reset
Signal Description
SDO0
Output
Driven
High
Serial Data Output 0 (SDO0)
—SDO0 is the serial output for
transmitter 0. SDO0 is driven high if transmitter 0 is disabled,
during individual reset, hardware reset, and software reset,
or when the DSP is in the Stop state.
SDO1
Output
Driven
High
Serial Data Output 1 (SDO1)
—SDO1 is the serial output for
transmitter 1. SDO1 is driven high if transmitter 1 is disabled,
during individual reset, hardware reset and software reset, or
when the DSP is in the Stop state.
SDO2
Output
Driven
High
Serial Data Output 2 (SDO2)
—SDO2 is the serial output for
transmitter 2. SDO2 is driven high if transmitter 2 is disabled,
during individual reset, hardware reset and software reset, or
when the DSP is in the Stop state.
SCKT
Input or
Output
Tri-stated
Serial Clock
Transmit (SCKT)
—This signal provides the
clock for the SAI. SCKT can be an output if the transmit
section is configured as a master, or a Schmitt-trigger input if
the transmit section is configured as a slave. When the SCKT
is an output, it provides an internally generated SAI transmit
clock to external circuitry. When the SCKT is an input, it
allows external circuitry to clock data out of the SAI.
Note:
SCKT is high impedance if all transmitters are disabled
(individual reset), during hardware reset, software reset, or
while the DSP is in the Stop state. While in the high
impedance state, the internal input buffer is disconnected
from the pin and no external pull-up is necessary.
WST
Input or
Output
Tri-stated
Word Select Transmit (WST)
—WST is an output if the
transmit section is programmed as a master, and a Schmitt-
trigger input if it is programmed as a slave. WST is used to
synchronize the data word and select the left/ right portion of
the data sample.
Note:
WST is high impedance if all transmitters are disabled
(individual reset), during hardware or software reset, or
while the DSP is in the Stop state. While in the high
impedance state, the internal input buffer is disconnected
from the pin and no external pull-up is necessary.
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