Table 17-3. Signals by Function, Except for GPIO (continued)
DescriptionBuffer Type
a
Pin TypePin NumberPin NameFunction
SSI module 0 clock.TTLI/O28SSI0ClkSSI
SSI module 0 frame.TTLI/O29SSI0Fss
SSI module 0 receive.TTLI30SSI0Rx
SSI module 0 transmit.TTLO31SSI0Tx
SSI module 1 clock.TTLI/O72SSI1Clk
SSI module 1 frame.TTLI/O73SSI1Fss
SSI module 1 receive.TTLI74SSI1Rx
SSI module 1 transmit.TTLO75SSI1Tx
CPU Mode bit 0. Input must be set to logic 0
(grounded); other encodings reserved.
TTLI65CMOD0System Control &
Clocks
CPU Mode bit 1. Input must be set to logic 0
(grounded); other encodings reserved.
TTLI76CMOD1
Main oscillator crystal input or an external clock
reference input.
AnalogI48OSC0
Main oscillator crystal output. Leave unconnected
when using a single-ended clock source.
AnalogO49OSC1
System reset input.TTLI64RST
UART module 0 receive. When in IrDA mode, this
signal has IrDA modulation.
TTLI26U0RxUART
UART module 0 transmit. When in IrDA mode, this
signal has IrDA modulation.
TTLO27U0Tx
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
Table 17-4. GPIO Pins and Alternate Functions
Multiplexed FunctionMultiplexed FunctionPin NumberIO
U0Rx26PA0
U0Tx27PA1
SSI0Clk28PA2
SSI0Fss29PA3
SSI0Rx30PA4
SSI0Tx31PA5
CCP134PA6
CCP066PB0
67PB1
I2C0SCL70PB2
I2C0SDA71PB3
92PB4
91PB5
90PB6
TRST89PB7
SWCLKTCK80PC0
SWDIOTMS79PC1
TDI78PC2
June 22, 2010470
Texas Instruments-Production Data
Signal Tables