GPIO6
Device
MPU
subsystem
interrupt controller
PRCM
IVA2.2
subsystem
interrupt controller
L4-Per interconnect
GPIO2
GPIO2_MPU_IRQ
GPIO2_IVA2_IRQ
GPIO2_WAKE
GPIO2_DBCLK
GPIO3
GPIO4
GPIO5
GPIO2_ICLK
General-purpose interface
GPIO1
GPIO1_MPU_IRQ
GPIO1_IVA2_IRQ
GPIO1_DBCLK
GPIO1_ICLK
gpio_[31:0]
GPIO1_WAKE
L4-Wake-up interconnect
GPIO_[31:0]
WKUP_L4_ICLK
PER_L4_ICLK
WKUP_32K_FCLK
PER_32K_ALWON_FCLK
GPIO[6:1]_SWAKEUP
IVA2_IRQ[43]
IVA2_IRQ[32:28]
M_IRQ_[34:29]
other GPIO modules
(GPIO3 to GPIO6)
6
6
5
gpio_[98:96]
GPIO_[98:96]
DAC1
GPIO_33
TV_DETECT
GPIO_[191:188]
gpio_[191:188]
BANDGAP
GPIO_127
TSHUT
gpif-004
gpio_[186:160]
gpio_[159:128]
gpio_127
gpio_[95:64]
gpio_[63:34]
GPIO_[186:160]
GPIO_[159:128]
GPIO_[95:64]
GPIO_[63:34]
other GPIO modules
(GPIO3 to GPIO5)
GPIO6_IVA2_IRQ
gpio_[100:99]
GPIO_[100:99]
gpio_[104:101]
GPIO_[104:101]
gpio_[108:105]
GPIO_[108:105]
gpio_[111:109]
GPIO_[111:109]
gpio_[115:112]
GPIO_[115:112]
gpio_[126:116]
GPIO_[126:116]
Public Version
www.ti.com
General-Purpose Interface Integration
25.3 General-Purpose Interface Integration
25.3.1 Description
highlights the general-purpose interface integration in the device.
Figure 25-4. General-Purpose Interface Integration
25.3.1.1 Clocking, Reset, and Power-Management Scheme
25.3.1.1.1 Clocking
Each GPIO module uses two clocks:
•
Debounce clock: The 32-KHz debounce clock, GPIOi_DBCLK, (where i = 1, 2, 3, 4, 5, and 6, with one
debounce clock per module), comes from the PRCM module and is used for the debounce cell logic
(without the corresponding configuration registers). This cell can sample the input line and filters the
input level using a programmed delay.
For GPIO2 to GPIO6, this clock is controlled by the EN_GPIOi (where i = 2 to 6) bit
PRCM.CM_FCLKEN_PER (0: Disables, 1: Enables the clock). For GPIO1, this clock is controlled by
the EN_GPIO1 bit PRCM.CM_FCLKEN_WKUP[3] (0: Disables, 1: Enables the clock) for GPIO1.
3469
SWPU177N – December 2009 – Revised November 2010
General-Purpose Interface
Copyright © 2009–2010, Texas Instruments Incorporated