Essi1 - Motorola DSP56309 User Manual

Table 2-12 Enhanced Synchronous Serial Interface 0 (ESSI0) (Continued)
Signal
Name
STD0 Input/
Output
PC5 Input or
Output
2.9.2

ESSI1

The ESSI1 signal descriptions for the DSP56309 are listed in Table 2-13.
MOTOROLA
State
Type During
Reset
Input
DSP56309UM/D
Signal/Connection Descriptions
Enhanced Synchronous Serial Interface
Signal Description
Serial Transmit DataÑSTD0 is used for
transmitting data from the serial Transmit
shift register. STD0 is an output when data is
being transmitted.
This signal is driven by a weak keeper after
reset.
Port C 5ÑThe default configuration
following reset is GPIO input PC5. When this
port is configured as PC5, signal direction is
controlled through PRR0. The signal can be
configured as an ESSI signal STD0 through
PCR0.
2-27