dsp56800eerm Freescale Semiconductor, Inc, dsp56800eerm Datasheet - Page 27

• Manufacturer Part Number: dsp56800eerm
• Description: 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
Preliminary
(GPIOE0)
(GPIOE1)
GPIOD0
GPIOD1
GPIOD2
GPIOD3
GPIOD4
GPIOD5
Signal
Name
(CS2)
(CS3)
(CS4)
(CS5)
(CS6)
(CS7)
RXD0
TXD0
Table 2-2 Signal and Package Information for the 160-Pin LQFP and MBGA
Pin
No.
55
56
57
58
59
60
4
5
Ball No.
N7
D2
P6
K6
P7
B1
L6
L7
Output
Output
Output
Output
Output
Input/
Input/
Input/
Type
Input
56F8357 Technical Data, Rev. 15
disabled,
pull-up is
output is
enabled
In reset,
enabled
enabled
During
pull-up
pull-up
Reset
Input,
Input,
State
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.
Most designs will want to change the DRV state to DRV = 1
instead of using the default setting.
At 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.
Signal Description
Signal Pins
27