DSP56854 View Datasheet(PDF) - Freescale Semiconductor
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Description
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DSP56854 Datasheet PDF : 60 Pages
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Introduction
Table 3-1. 56854 Signal and Package Information for the 128-pin LQFP (Continued)
Pin No.
Signal Name
Type
Description
95
TXD1
Output(Z)
Serial Transmit Data 1 (TXD1)—This signal transmits data from
the SCI 1 transmit data register.
GPIOE3
Input/Output
Port E GPIO (3)—This pin is a General Purpose I/O (GPIO) pin that
can individually be programmed as input or output pin.
116
STD0
Output
ESSI Transmit Data (STD0)—This output pin transmits serial data
from the ESSI Transmitter Shift Register.
GPIOC0
Input/Output
Port C GPIO (0)—This pin is a General Purpose I/O (GPIO) pin
when the ESSI is not in use.
117
SRD0
Input
ESSI Receive Data (SRD0)—This input pin receives serial data
and transfers the data to the ESSI Receive Shift Register.
GPIOC1
Input/Output
Port C GPIO (1)—This pin is a General Purpose I/O (GPIO) pin
when the ESSI is not in use.
118
SCK0
Input/Output ESSI Serial Clock (SCK0)—This bidirectional pin provides the
serial bit rate clock for the transmit section of the ESSI. The clock
signal can be continuous or gated and can be used by both the
transmitter and receiver in synchronous mode.
GPIOC2
Input/Output
Port C GPIO (2)—This pin is a General Purpose I/O (GPIO) pin
when the ESSI is not in use.
119
SC00
Input/Output ESSI Serial Control Pin 0 (SC00)—The function of this pin is
determined by the selection of either synchronous or asynchronous
mode. For asynchronous mode, this pin will be used for the receive
clock I/O. For synchronous mode, this pin is used either for
transmitter1 output or for serial I/O flag 0.
GPIOC3
Input/Output
Port C GPIO (3)—This pin is a General Purpose I/O (GPIO) pin
when the ESSI is not in use.
120
SC01
Input/Output ESSI Serial Control Pin 1 (SC01)—The function of this pin is
determined by the selection of either synchronous or asynchronous
mode. For asynchronous mode, this pin is the receiver frame sync
I/O. For synchronous mode, this pin is used either for transmitter2
output or for serial I/O flag 1.
GPIOC4
Input/Output
Port C GPIO (4)—This pin is a General Purpose I/O (GPIO) pin
when the ESSI is not in use.
56854 Technical Data, Rev. 6
Freescale Semiconductor
19
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