dsp56001a Freescale Semiconductor, Inc, dsp56001a Datasheet - Page 17

• Manufacturer Part Number: dsp56001a
• Description: 24-bit Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

SYNCHRONOUS SERIAL INTERFACE PORT
MOTOROLA
SC0
PC3
SC1
PC4
SC2
PC5
SCK
PC6
Signal Name
Input or
Input or
Input or
Input or
Input or
Input or
Input or
Input or
Output
Output
Output
Output
Output
Output
Output
Output
Signal
Type
Table 1-11 Synchronous Serial Interface (SSI) Signals
Freescale Semiconductor, Inc.
Tri-stated Serial Clock 0 (SC0)—This signal’s function is determined by
Tri-stated Serial Clock 1 (SC1)—The SSI uses this bidirectional signal to
Tri-stated Serial Clock 2 (SC2)—The SSI uses this bidirectional signal to
Tri-stated SSI Serial Receive Clock—This bidirectional signal provides the
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during
Reset
State
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whether the SCLK is in Synchronous or Asynchronous mode.
Port C GPIO 3 (PC3)—This signal is GPIO signal PC3 when not
configured as SCI signal SC0.
After reset, the default state is GPIO input.
control flag or frame synchronization. This signal’s function is
determined by whether the SCLK is in Synchronous or
Asynchronous mode.
SC0 and SC1 are independent serial I/O flags, but may be used
together for multiple serial device selection.
Port C GPIO 4 (PC4)—This signal is GPIO signal PC4 when not
configured as SSI function SC1.
After reset, the default state is GPIO input.
control frame synchronization only. As with SC0 and SC1, its
function is defined by the SSI operating mode.
Port C GPIO 5 (PC5)—This signal is GPIO signal PC5 when not
configured as SSI function SC1.
After reset, the default state is GPIO input.
serial bit rate clock for the SSI when only one clock is being used.
Port C GPIO 6 (PC6)—This signal is GPIO signal PC6 when the SSI
function is not being used.
After reset, the default state is GPIO input.
DSP56001A/D, Rev. 1
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In Synchronous mode, this signal is used as a serial I/O flag.
In Asynchronous mode, this signal receives clock I/O.
In Asynchronous mode, this signal is frame sync I/O.
For Synchronous mode with continuous clock, this signal is
a serial I/O flag and operates like the SC0.
Signal Description
Synchronous Serial Interface Port
DSP56001A
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