Table 2-9 Serial Audio Interface (Sai) Receiver Signals - Motorola DSP56009 User Manual

Signal Descriptions
Serial Audio Interface (SAI)
2.8 SERIAL AUDIO INTERFACE (SAI)
The SAI is composed of separate receiver and transmitter sections.
2.8.1 SAI Receiver Section

Table 2-9 Serial Audio Interface (SAI) Receiver signals

Signal Signal
Name Type
SDI0 Input
SDI1 Input
SCKR Input or
Output
2-18
State
during
Reset
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.
Note: This signal is high impedance during
Tri-stated 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.
Note: This signal is high impedance during
Tri-stated 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
DSP56009 User's Manual
Signal Description
hardware or software reset, while receiver 0
is disabled (R0EN = 0), or while the DSP is
in the Stop state.
hardware or software reset, while receiver 1
is disabled (R1EN = 0), or while the DSP is
in the Stop state.
disabled (individual reset) and during
hardware or software reset, or while the
DSP is in the Stop state.
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