mc56f8335 Freescale Semiconductor, Inc, mc56f8335 Datasheet - Page 21

• Manufacturer Part Number: mc56f8335
• Description: 16-bit Digital Signal Controller
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
Preliminary
(GPIOE0)
(GPIOE1)
(GPIOD6)
GPIOD0
GPIOD1
GPIOD2
GPIOD3
GPIOD4
GPIOD5
Signal
Name
RXD0
(CS2)
(CS3)
(CS4)
(CS5)
(CS6)
(CS7)
TXD0
TXD1
Table 2-2 Signal and Package Information for the 128-Pin LQFP (Continued)
Pin No.
42
43
44
45
46
47
40
7
8
Output
Output
Output
Output
Output
Output
Output
Input/
Input/
Input/
Input/
Type
Input
disabled,
pull-up is
disabled,
pull-up is
output is
output is
enabled
In reset,
enabled
enabled
In reset,
enabled
56F8335 Technical Data, Rev. 5
During
pull-up
pull-up
Reset
State
Input,
Input,
Port D GPIO — These six GPIO pins can be individually
programmed as input or output pins.
Chip Select — CS2 - CS7 may be programmed within the EMI
module to act as chip selects for specific areas of the external
memory map. Depending upon the state of the DRV bit in the
EMI bus control register (BCR), CS2 - CS7 are tri-stated when
the external bus is inactive.
After reset, these pins are configured as GPIO.
To deactivate the internal pull-up resistor, clear the appropriate
GPIO bit in the GPIOD_PUR register.
Example: GPIOD0, clear bit 0 in the GPIOD_PUR register.
Transmit Data — SCI0 transmit data output
Port E GPIO — This GPIO pin can be individually programmed
as an input or output pin.
After reset, the default state is SCI output.
To deactivate the internal pull-up resistor, clear bit 0 in the
GPIOE_PUR register.
Receive Data — SCI0 receive data input
Port E GPIO — This GPIO pin can be individually programmed
as an input or output pin.
After reset, the default state is SCI output.
To deactivate the internal pull-up resistor, clear bit 1 in the
GPIOE_PUR register.
Transmit Data — SCI1 transmit data output
Port D GPIO — This GPIO pin can be individually programmed
as an input or output pin.
After reset, the default state is SCI output.
To deactivate the internal pull-up resistor, clear bit 6 in the
GPIOD_PUR register.
Signal Description
Signal Pins
21