dsp56167 Freescale Semiconductor, Inc, dsp56167 Datasheet - Page 21

• Manufacturer Part Number: dsp56167
• Description: Advance Information 16-bit Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

16-BIT SYNCHRONOUS SERIAL INTERFACE 0 PORT
MOTOROLA
STD0
PC0
SRD0
PC1
SCK0
PC2
SFS0
PC4
Signal Name
Table 1-11 16-Bit Synchronous Serial Interface 0 (SSI0) Signals
Output Tri-
Output
Output
Input/
Input/
Signal
Input
Type
stated
Tri-
stated
Tri-
stated
Tri-
stated
during
Reset
State
Serial Transmit Data 0 (STD0)—This output transmits serial
data from the SSI0 Transmit Shift Register (TSR0).
Port C GPIO 0 (PC0)— This signal is a GPIO signal (PC0) when
the SSI0 STD0 function is not being used.
After reset, the default state is GPIO input.
Serial Receive Data 0 (SRD0)—The input receives serial data
into the SSI0 Receive Shift Register (RSR0).
Port C GPIO 1 (PC1)— This signal is a GPIO signal (PC1) when
the SSI0 SRD0 function is not being used.
After reset, the default state is GPIO input.
Serial Clock 0 (SCK0)—This bidirectional signal provides the
serial bit rate clock for the SSI0 interface. The clock signal can be
continuous or gated and is used by both the transmitter and
receiver.
Port C GPIO 5 (PC5)— This signal is a GPIO signal (PC2) when
the SSI0 SCK0 function is not being used.
After reset, the default state is GPIO input.
Serial Frame Sync 0— This bidirectional signal is used by the
SSI0 serial interface for frame sync I/O or flag I/O. The SFS0 is
used by both the transmitter and receiver to synchronize data
transfer and can be an input or an output.
Port C GPIO 4 (PC4)— This signal is a GPIO signal (PC4) when
the SSI0 SFS0 function is not being used.
After reset, the default state is GPIO input.
DSP56167/D, Rev. 1
16-Bit Synchronous Serial Interface 0 Port
Signal Description
Signal/Pin Descriptions
1-15