LM3S1601 Datasheet, PDF (321/587 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Stellaris^® LM3S1601 Microcontroller
Figure 9-1. GPTM Module Block Diagram
Interrupt / Config
TimerA
Interrupt
TimerB
Interrupt
GPTMCFG
GPTMCTL
GPTMIMR
GPTMRIS
GPTMMIS
GPTMICR
TimerA Control
GPTMTAPMR
GPTMTAPR
GPTMTAMATCHR
GPTMTAILR
GPTMTAMR
TimerB Control
GPTMTBPMR
GPTMTBPR
GPTMTBMATCHR
GPTMTBILR
GPTMTBMR
0x0000 (Down Counter Modes)
TA Comparator
GPTMAR En
GPTMTBR En
TB Comparator
Clock / Edge
Detect
32 KHz or
Even CCP Pin
RTC Divider
Clock / Edge
Detect
Odd CCP Pin
System
Clock
0x0000 (Down Counter Modes)
9.2
Table 9-1. Available CCP Pins
Timer
Timer 0
Timer 1
Timer 2
Timer 3
16-Bit Up/Down Counter
TimerA
TimerB
TimerA
TimerB
TimerA
TimerB
TimerA
TimerB
Even CCP Pin
CCP0
-
CCP2
-
CCP4
-
CCP6
-
Odd CCP Pin
-
CCP1
-
CCP3
-
CCP5
-
CCP7
Signal Description
Table 9-2 on page 322 and Table 9-3 on page 322 list the external signals of the GP Timer module
and describe the function of each. The GP Timer signals are alternate functions for some GPIO
signals and default to be GPIO signals at reset. The column in the table below titled "Pin Assignment"
lists the possible GPIO pin placements for these GP Timer signals. The AFSEL bit in the GPIO
Alternate Function Select (GPIOAFSEL) register (page 295) should be set to choose the GP Timer
function. For more information on configuring GPIOs, see “General-Purpose Input/Outputs
(GPIOs)” on page 272.
June 19, 2012
321
Texas Instruments-Production Data