DSP56853 View Datasheet(PDF) - Freescale Semiconductor
Part Name
Description
Manufacturer
DSP56853 Datasheet PDF : 60 Pages
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Table 3-1. 56853 Signal and Package Information for the 128-pin LQFP (Continued)
Pin No.
16
Signal Name
MODB
Type
Input
Description
Mode Select (MODB)—During the bootstrap process MODB selects
one of the eight bootstrap modes.
GPIOH1
Input/Output
Port H GPIO (1)—This pin is a General Purpose I/O (GPIO) pin after
the bootstrap process has completed.
17
MODC
Input
Mode Select (MODC)—During the bootstrap process MODC selects
one of the eight bootstrap modes.
GPIOH2
Input/Output
Port H GPIO (2)—This pin is a General Purpose I/O (GPIO) pin after
the bootstrap process has completed.
35
RESET
Input
Reset (RESET)—This input is a direct hardware reset on the
processor. When RESET is asserted low, the device is initialized and
placed in the Reset state. A Schmitt trigger input is used for noise
immunity. When the RESET pin is deasserted, the initial chip
operating mode is latched from the MODA, MODB, and MODC pins.
34
RSTO
65
RXD0
Output
Input
To ensure complete hardware reset, RESET and TRST should be
asserted together. The only exception occurs in a debugging
environment when a hardware reset is required and it is necessary
not to reset the JTAG/Enhanced OnCE module. In this case, assert
RESET, but do not assert TRST.
Reset Output (RSTO)—This output is asserted on any reset
condition (external reset, low voltage, software or COP).
Serial Receive Data 0 (RXD0)—This input receives byte-oriented
serial data and transfers it to the SCI 0 receive shift register.
GPIOE0
Input/Output
Port E GPIO (0)—This pin is a General Purpose I/O (GPIO) pin that
can individually be programmed as input or output pin.
66
TXD0
Output(Z) Serial Transmit Data 0 (TXD0)—This signal transmits data from the
SCI 0 transmit data register.
GPIOE1
Input/Output
Port E GPIO (1)—This pin is a General Purpose I/O (GPIO) pin that
can individually be programmed as input or output pin.
94
RXD1
Input
Serial Receive Data 1 (RXD1)—This input receives byte-oriented
serial data and transfers it to the SCI 1 receive shift register.
GPIOE2
Input/Output
Port E GPIO (2)—This pin is a General Purpose I/O (GPIO) pin that
can individually be programmed as input or output pin.
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.
56853 Technical Data, Rev. 6
18
Freescale Semiconductor
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