DSP56004ROM View Datasheet(PDF) - Freescale Semiconductor
Part Name
Description
Manufacturer
DSP56004ROM Datasheet PDF : 82 Pages
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Freescale Semiconductor, Inc.
Signal/Connection Descriptions
Serial Audio Interface (SAI)
SERIAL AUDIO INTERFACE (SAI)
The SAI is composed of separate receiver and transmitter sections.
SAI Receiver Section
Signal
Name
SDI0
SDI1
SCKR
Table 1-9 Serial Audio Interface (SAI) Receiver signals
Signal
Type
State during
Reset
Signal Description
Input
Tri-stated
Serial Data Input 0—While in the high impedance
state, the internal input buffer is disconnected from
the pin and no external pull-up is necessary. SDI0 is
the serial data input for receiver 0.
Input
Tri-stated
Note:
This signal is high impedance during hardware or
software reset, while receiver 0 is disabled
(R0EN = 0), or while the DSP is in the Stop state.
Serial Data Input 1—While in the high impedance
state, the internal input buffer is disconnected from
the pin and no external pull-up is necessary. SDI1 is
the serial data input for receiver 1.
Input or
Output
Tri-stated
Note:
This signal is high impedance during hardware or
software reset, while receiver 1 is disabled
(R1EN = 0), or while the DSP is in the Stop state.
Receive Serial Clock—SCKR is an output if the
receiver section is programmed as a master, and a
Schmitt-trigger input if programmed as a slave. While
in the high impedance state, the internal input buffer
is disconnected from the pin and no external pull-up is
necessary.
Note:
SCKR is high impedance if all receivers are
disabled (individual reset) and during hardware or
software reset, or while the DSP is in the Stop state.
MOTOROLA
DSP56004/D, Rev. 3
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