LM3S9B81 Datasheet, PDF (1042/1155 Pages) Texas Instruments – Stellaris® LM3S9B81 Microcontroller

Signal Tables
Table 23-4. Signals by Function, Except for GPIO (continued)
Function
Pin Name Pin Number Pin Type Buffer Type^a
Description
System Control &
Clocks
NMI
OSC0
89
I
TTL
Non-maskable interrupt.
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.
UART
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.
U1CTS
2
I
TTL
UART module 1 Clear To Send modem status input
10
signal.
34
50
U1DCD
1
I
TTL
UART module 1 Data Carrier Detect modem status
11
input signal.
35
52
U1DSR
47
I
TTL
UART module 1 Data Set Ready modem output
53
control line.
U1DTR
55
O
TTL
UART module 1 Data Terminal Ready modem
100
status input signal.
U1RI
97
I
TTL
UART module 1 Ring Indicator modem status input
signal.
U1RTS
54
O
TTL
UART module 1 Request to Send modem output
61
control line.
U1Rx
10
I
TTL
UART module 1 receive. When in IrDA mode, this
12
signal has IrDA modulation.
23
26
66
92
U1Tx
11
O
TTL
UART module 1 transmit. When in IrDA mode, this
13
signal has IrDA modulation.
22
27
67
91
U2Rx
10
I
TTL
UART module 2 receive. When in IrDA mode, this
19
signal has IrDA modulation.
92
98
U2Tx
6
O
TTL
UART module 2 transmit. When in IrDA mode, this
11
signal has IrDA modulation.
18
99
1042
Texas Instruments-Advance Information
June 29, 2010