timers-002
GPTi_FCLK
GPTi_ICLK
GP timer (x11)
32 kHz
12/13/19.2/26/38.4 MHz
IVA2.2
subsystem
L4
interconnect
gpt11_pwm_evt
11
Interrupt
controller
Modem
interrupt
handler
MPU
subsystem
Interrupt
controller
4
4
11
GPTi_IRQ
GPT11_PWM_OUT
GPT11_EVENT_CAPTURE
GPT11_GPOCFG
gpt10_pwm_evt
GPT10_PWM_OUT
GPT10_EVENT_CAPTURE
GPT10_GPOCFG
gpt9_pwm_evt
GPT9_PWM_OUT
GPT9_EVENT_CAPTURE
GPT9_GPOCFG
gpt8_pwm_evt
GPT8_PWM_OUT
GPT8_EVENT_CAPTURE
GPT8_GPOCFG
GPT1_EVENT_CAPTURE
GPTi_SWAKEUP
GPTi_RST
PRCM
11
11
11
Device
sys_32k
Public Version
www.ti.com
General-Purpose Timers
16.2 General-Purpose Timers
16.2.1 GP Timers Overview
The device has 11 GP timers: GPTIMER1 through GPTIMER11.
Each timer can be clocked from either the system clock (12, 13, 16.8, 19.2, 26, or 38.4 MHz) or the
32-kHz clock. The selection of the clock source is made at the power, reset, clock management (PRCM)
module level. For more information, see
, Clocking, Reset, and Power-Management
Scheme.
GPTIMER1 has its GPT1_EVENT_CAPTURE pin tied to the 32-kHz clock and can be used to gauge the
system clock input; it detects its frequency among 12, 13, 16.8, 19.2, 26, or 38.4 MHz.
Each timer can provide an interrupt to the microprocessor unit (MPU) subsystem. In addition, GPTIMER5
through GPTIMER8 also have interrupts connected to the IVA2.2 subsystem.
GPTIMER1, GPTIMER2, and GPTIMER10 include specific functions to generate accurate tick interrupts to
the operating system. GPTIMER8 through GPTIMER11 are connected to external pins by their PWM
output or their event capture input pin (for external timer triggering).
shows an overview of the
GP timers.
Figure 16-2. GP Timers Overview
2703
SWPU177N – December 2009 – Revised November 2010
Timers
Copyright © 2009–2010, Texas Instruments Incorporated
Содержание OMAP36 Series
Страница 174: ...174 List of Tables SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 692: ...692 MPU Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 1084: ...1084 IVA2 2 Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 1990: ...1990 2D 3D Graphics Accelerator SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2334: ...2334 Memory Subsystem SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2700: ...2700 Memory Management Units SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2868: ...2868 HDQ 1 Wire SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 2974: ...2974 UART IrDA CIR SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3054: ...3054 Multichannel SPI SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3462: ...3462 MMC SD SDIO Card Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3508: ...3508 General Purpose Interface SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3584: ...3584 Initialization SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...
Страница 3648: ...3648 Debug and Emulation SWPU177N December 2009 Revised November 2010 Copyright 2009 2010 Texas Instruments Incorporated ...