mc56f8335 Freescale Semiconductor, Inc, mc56f8335 Datasheet - Page 22

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

22
(GPIOD7)
Signal
Name
RXD1
TCK
TMS
TDO
TDI
Table 2-2 Signal and Package Information for the 128-Pin LQFP (Continued)
Pin No.
115
116
117
118
41
Schmitt
Schmitt
Schmitt
Output
Output
Input/
Type
Input
Input
Input
Input
pulled high
pulled high
pulled low
internally
internally
internally
disabled,
pull-up is
output is
In reset,
enabled
enabled
56F8335 Technical Data, Rev. 5
During
pull-up
Reset
State
Input,
Input,
Input,
Input,
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.
Test Data Output — This tri-stateable output pin provides a
serial output data stream from the JTAG/EOnCE port. It is driven
in the shift-IR and shift-DR controller states, and changes on the
falling edge of TCK.
Always tie the TMS pin to V
Signal Description
DD
through a 2.2K resistor.
Freescale Semiconductor
Preliminary