LM3S1968 Datasheet, PDF (634/709 Pages) List of Unclassifed Manufacturers – Microcontroller

Signal Tables
Table 19-3. Signals by Function, Except for GPIO (continued)
Function
Pin Name Pin Number Pin Type Buffer Type^a
Description
SSI0Clk
28
I/O
TTL
SSI module 0 clock.
SSI0Fss
29
I/O
TTL
SSI module 0 frame signal.
SSI0Rx
30
I
TTL
SSI module 0 receive.
SSI0Tx
31
O
TTL
SSI module 0 transmit.
SSI
SSI1Clk
72
I/O
TTL
SSI module 1 clock.
SSI1Fss
73
I/O
TTL
SSI module 1 frame signal.
SSI1Rx
74
I
TTL
SSI module 1 receive.
SSI1Tx
75
O
TTL
SSI module 1 transmit.
CMOD0
65
I
TTL
CPU Mode bit 0. Input must be set to logic 0
(grounded); other encodings reserved.
System Control &
Clocks
CMOD1
OSC0
76
I
TTL
CPU Mode bit 1. Input must be set to logic 0
(grounded); other encodings reserved.
48
I
Analog Main oscillator crystal input or an external clock
reference input.
OSC1
49
O
Analog Main oscillator crystal output. Leave unconnected
when using a single-ended clock source.
RST
64
I
TTL
System reset input.
U0Rx
26
I
TTL
UART module 0 receive. When in IrDA mode, this
signal has IrDA modulation.
U0Tx
27
O
TTL
UART module 0 transmit. When in IrDA mode, this
signal has IrDA modulation.
UART
U1Rx
U1Tx
12
I
TTL
UART module 1 receive. When in IrDA mode, this
signal has IrDA modulation.
13
O
TTL
UART module 1 transmit. When in IrDA mode, this
signal has IrDA modulation.
U2Rx
19
I
TTL
UART module 2 receive. When in IrDA mode, this
signal has IrDA modulation.
U2Tx
18
O
TTL
UART module 2 transmit. When in IrDA mode, this
signal has IrDA modulation.
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
19.1.4 GPIO Pins and Alternate Functions
Table 19-4. GPIO Pins and Alternate Functions
IO
Pin Number
PA0
26
PA1
27
PA2
28
PA3
29
PA4
30
PA5
31
PA6
34
PA7
35
PB0
66
PB1
67
Multiplexed Function
U0Rx
U0Tx
SSI0Clk
SSI0Fss
SSI0Rx
SSI0Tx
I2C1SCL
I2C1SDA
CCP0
CCP2
Multiplexed Function
634
July 15, 2014
Texas Instruments-Production Data