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I/O PORTS S3C2410A
9-16
PORT F CONTROL REGISTERS (GPFCON, GPFDAT, and GPFPU)
If GPF0 - GPF7 are used for wakeup signals in Power_OFF mode, the ports must be configured as external interrupt
(set in Interrupt mode).
Register Address R/W Description Reset Value
GPFCON 0x56000050 R/W Configure the pins of port F 0x0
GPFDAT 0x56000054 R/W The data register for port F Undefined
GPFUP 0x56000058 R/W Pull-up disable register for port F 0x0
Reserved 0x5600005C – Reserved Undefined
GPFCON Bit Description
GPF7 [15:14] 00 = Input 01 = Output
10 = EINT7 11 = Reserved
GPF6 [13:12] 00 = Input 01 = Output
10 = EINT6 11 = Reserved
GPF5 [11:10] 00 = Input 01 = Output
10 = EINT5 11 = Reserved
GPF4 [9:8] 00 = Input 01 = Output
10 = EINT4 11 = Reserved
GPF3 [7:6] 00 = Input 01 = Output
10 = EINT3 11 = Reserved
GPF2 [5:4] 00 = Input 01 = Output
10 = EINT2 11 = Reserved
GPF1 [3:2] 00 = Input 01 = Output
10 = EINT1 11 = Reserved
GPF0 [1:0] 00 = Input 01 = Output
10 = EINT0 11 = Reserved
NOTES:
1.
GPFDAT Bit Description
GPF[7:0] [7:0] When the port is configured as input port, data from external sources can be
read to the corresponding pin. When the port is configured as output port, data
written in this register can be sent to the corresponding pin. When the port is
configured as functional pin, undefined value will be read.
2.
GPFUP Bit Description
GPF[7:0] [7:0] 0: The pull-up function attached to to the corresponding port pin is enabled.
1: The pull-up function is disabled.