Motorola DSP56305 User Manual page 88

Signal/Connection Descriptions
Enhanced Synchronous Serial Interface 0 (ESSI0)
Table 2-11 Enhanced Synchronous Serial Interface 0 (ESSI0) (Continued)
Signal
Type
Name
SC02 Input/
Output
PC2 Input or
Output
2-30
State During
Reset Stop
Input Disconnected
DSP56305 User's Manual
Signal Description
Serial Control Signal 2—SC02 is used for frame
sync I/O. SC02 is the frame sync for both the
transmitter and receiver in Synchronous mode,
and for the transmitter only in Asynchronous
mode. When configured as an output, this
signal is the internally generated frame sync
signal. When configured as an input, this signal
receives an external frame sync signal for the
transmitter (and the receiver in synchronous
operation).
Port C 2—The default configuration following
reset is GPIO input PC2. When configured as
PC2, signal direction is controlled through
PRR0. The signal can be configured as an ESSI
signal SC02 through PCR0.
This input is 5 V tolerant.
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