MC56F8346 Freescale Semiconductor, Inc, MC56F8346 Datasheet - Page 28

• Manufacturer Part Number: MC56F8346
• Description: 56f8300 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

28
Signal Name
(GPIOE1)
(GPIOD6)
(GPIOD7)
RXD0
RXD1
TXD1
TMS
TCK
TDI
Table 2-2 Signal and Package Information for the 144 Pin LQFP
Pin No.
121
122
123
42
43
5
Schmitt
Schmitt
Schmitt
Output
Output
Output
Output
Input/
Input/
Input/
Type
Input
Input
Input
Input
Input
pulled high
pulled high
pulled low
disabled,
pull-up is
internally
internally
internally
output is
enabled
In reset,
enabled
enabled
During
pull-up
pull-up
56F8346 Technical Data, Rev. 15
Reset
Input,
Input,
Input,
Input,
Input,
State
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.
Receive Data — SCI1 receive data input
Port D GPIO — This GPIO pin can be individually programmed as
an input or output pin.
After reset, the default state is SCI input.
To deactivate the internal pull-up resistor, clear bit 7 in the
GPIOD_PUR register.
Test Clock Input — This input pin provides a gated clock to
synchronize the test logic and shift serial data to the JTAG/EOnCE
port. The pin is connected internally to a pull-down resistor.
Test Mode Select Input — This input pin is used to sequence the
JTAG TAP controller’s state machine. It is sampled on the rising
edge of TCK and has an on-chip pull-up resistor.
To deactivate the internal pull-up resistor, set the JTAG bit in the
SIM_PUDR register.
Note:
Test Data Input — This input pin provides a serial input data
stream to the JTAG/EOnCE port. It is sampled on the rising edge
of TCK and has an on-chip pull-up resistor.
To deactivate the internal pull-up resistor, set the JTAG bit in the
SIM_PUDR register.
Always tie the TMS pin to V
Signal Description
DD
through a 2.2K resistor.
Freescale Semiconductor
Preliminary