LM3S3749 Datasheet, PDF (822/898 Pages) Texas Instruments – Stellaris® LM3S3749 Microcontroller

Signal Tables
Table 21-3. Signals by Function, Except for GPIO (continued)
Function
Pin Name Pin Number Pin Type Buffer Type^a
Description
NMI
89
I
TTL
Non-maskable interrupt.
System Control &
Clocks
OSC0
OSC1
48
I
Analog Main oscillator crystal input or an external clock
reference input.
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
66
I
TTL
UART module 1 receive. When in IrDA mode, this
signal has IrDA modulation.
67
O
TTL
UART module 1 transmit. When in IrDA mode, this
signal has IrDA modulation.
U2Rx
10
I
TTL
UART module 2 receive. When in IrDA mode, this
signal has IrDA modulation.
U2Tx
11
O
TTL
UART module 2 transmit. When in IrDA mode, this
signal has IrDA modulation.
USB0DM
70
I/O
Analog Bidirectional differential data pin (D- per USB
specification) for USB0.
USB0DP
71
I/O
Analog Bidirectional differential data pin (D+ per USB
specification) for USB0.
USB
USB0EPEN
83
O
TTL
Optionally used in Host mode to control an external
power source to supply power to the USB bus.
USB0PFLT
76
I
TTL
Optionally used in Host mode by an external power
source to indicate an error state by that power
source.
USB0RBIAS
73
O
Analog 9.1-kΩ resistor (1% precision) used internally for
USB analog circuitry.
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
Table 21-4. 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
PB2
72
PB3
65
PB4
92
Multiplexed Function
U0Rx
U0Tx
SSI0Clk
SSI0Fss
SSI0Rx
SSI0Tx
CCP1
CCP3
U1Rx
U1Tx
I2C0SCL
I2C0SDA
C0-
Multiplexed Function
822
November 17, 2011
Texas Instruments-Production Data