Rainbow Electronics W90N740 - Manual (Page 193)

W90N740
Publication Release Date: November 26, 2004
- 189 - Revision A4
7.12.1 GPIO Controller Registers Map
REGISTER ADDRESS R/W DESCRIPTION RESET VALUE
GPIO_CFG 0xFFF8.3000 R/W GPIO Configuration Register 0x0000.0000
GPIO_DIR 0xFFF8.3004 R/W GPIO Direction Register 0x0000.0000
GPIO_DATAOUT 0xFFF8.3008 R/W GPIO Data Output Register 0x0000.0000
GPIO_DATAIN 0xFFF8.300C R GPIO Data Input Register Undefined
DEBNCE_CTRL 0xFFF8.3010 R/W De-bounce Control Register 0x0000.0000
GPIO Configuration Register (GPIO_CFG)
Register Address R/W Description Reset Value
GPIO_CFG 0xFFF8.3000 R/W GPIO Configuration Register 0x0000.0000
31 30 29 28 27 26 25 24
RESERVED
23 22 21 20 19 18 17 16
GPIOCFG20 GPIOCFG19 GPIOCFG18
15 14 13 12 11 10 9 8
GPIOCFG17 GPIOCFG16_15 GPIOCFG14 GPIOCFG13
7 6 5 4 3 2 1 0
GPIOCFG12 GPIOCFG11_10 GPIOCFG9_4 GPIOCFG3_0
GPIOCFG20 [21:20]: Operating mode for GPIO20
11 10 01 00
GPIOCFG20
Name Type Name Type Name Type Name Type
GPIO20 RESERVED I RESERVED nIRQ3 I GP20 IO
nIRQ3 is one of the external interrupt input pins.