LM3S9L71 Datasheet, PDF (1161/1275 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Stellaris^® LM3S9L71 Microcontroller
Table 23-7. Signals by Pin Number (continued)
Pin Number
Pin Name
Pin Type Buffer Type^a Description
PH2
I/O
TTL
GPIO port H bit 2.
C1o
O
TTL
Analog comparator 1 output.
D11
Fault3
I
TTL
PWM Fault 3.
IDX1
I
TTL
QEI module 1 index.
TXD3
O
TTL
Ethernet MII transmit data 3.
PB1
I/O
TTL
GPIO port B bit 1. This pin is not 5-V tolerant.
CCP1
I/O
TTL
Capture/Compare/PWM 1.
CCP2
I/O
TTL
Capture/Compare/PWM 2.
PWM3
D12
U1Tx
O
TTL
PWM 3. This signal is controlled by PWM Generator 1.
O
TTL
UART module 1 transmit. When in IrDA mode, this signal has IrDA
modulation.
USB0VBUS
I/O
Analog This signal is used during the session request protocol. This signal
allows the USB PHY to both sense the voltage level of VBUS, and
pull up VBUS momentarily during VBUS pulsing.
E1
NC
-
-
No connect. Leave the pin electrically unconnected/isolated.
E2
NC
-
-
No connect. Leave the pin electrically unconnected/isolated.
LDO
E3
-
Power Low drop-out regulator output voltage. This pin requires an external
capacitor between the pin and GND of 1 µF or greater. The LDO
pin must also be connected to the VDDC pins at the board level in
addition to the decoupling capacitor(s).
E10
VDD
-
Power Positive supply for I/O and some logic.
PB3
I/O
TTL
GPIO port B bit 3.
Fault0
I
TTL
PWM Fault 0.
E11
Fault3
I
TTL
PWM Fault 3.
I2C0SDA
I/O
OD
I²C module 0 data.
USB0PFLT
I
TTL
Optionally used in Host mode by an external power source to
indicate an error state by that power source.
PB0
I/O
TTL
GPIO port B bit 0. This pin is not 5-V tolerant.
CCP0
I/O
TTL
Capture/Compare/PWM 0.
PWM2
O
TTL
PWM 2. This signal is controlled by PWM Generator 1.
E12
U1Rx
I
TTL
UART module 1 receive. When in IrDA mode, this signal has IrDA
modulation.
USB0ID
I
Analog This signal senses the state of the USB ID signal. The USB PHY
enables an integrated pull-up, and an external element (USB
connector) indicates the initial state of the USB controller (pulled
down is the A side of the cable and pulled up is the B side).
F1
NC
-
-
No connect. Leave the pin electrically unconnected/isolated.
F2
NC
-
-
No connect. Leave the pin electrically unconnected/isolated.
PJ0
I/O
TTL
GPIO port J bit 0.
I2C1SCL
I/O
OD
I²C module 1 clock.
F3
PWM0
O
TTL
PWM 0. This signal is controlled by PWM Generator 0.
RXER
I
TTL
MII receive error.
January 21, 2012
Texas Instruments-Production Data
1161