DSP56853 View Datasheet(PDF) - Freescale Semiconductor
Part Name
Description
Manufacturer
DSP56853 Datasheet PDF : 60 Pages
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Introduction
Table 3-1. 56853 Signal and Package Information for the 128-pin LQFP (Continued)
Pin No.
116
Signal Name
STD0
Type
Output
Description
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.
121
SC02
Input/Output ESSI Serial Control Pin 2 (SC02)—This pin 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 pin is the internally
generated frame sync signal. When configured as an input, this pin
receives an external frame sync signal for the transmitter (and the
receiver in synchronous operation).
GPIOC5
Input /Output Port C GPIO (5)—This pin is a General Purpose I/O (GPIO) pin when
the ESSI is not in use.
56853 Technical Data, Rev. 6
Freescale Semiconductor
19
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