Samsung S3C2451X User Manual page 280

I/O PORTS
PORT H CONTROL REGISTERS (GPHCON, GPHDAT, GPHUDP)
Register
GPHCON
GPHDAT
GPHUDP
Reserved
GPHCON
Reserved
GPH14
GPH13
GPH12
GPH11
GPH10
GPH9
GPH8
GPH7
GPH6
GPH5
GPH4
GPH3
GPH2
GPH1
GPH0
11-24
Address R/W
0x56000070 R/W
0x56000074 R/W
0x56000078 R/W
0x5600007c –
Bit
[31:30] Reserved
[29:28] 00 = Input
10 = CLKOUT1
[27:26] 00 = Input
10 = CLKOUT0
[25:24] 00 = Input
10 = EXTUARTCLK
[23:22] 00 = Input
10 = nRTS1
[21:20] 00 = Input
10 = nCTS1
[19:18] 00 = Input
10 = nRTS0
[17:16] 00 = Input
10 = nCTS0
[15:14] 00 = Input
10 = RXD[3]
[13:12] 00 = Input
10 = TXD[3]
[11:10] 00 = Input
10 = RXD[2]
[9:8] 00 = Input
10 = TXD[2]
[7:6] 00 = Input
10 = RXD[1]
[5:4] 00 = Input
10 = TXD[1]
[3:2] 00 = Input
10 = RXD[0]
[1:0] 00 = Input
10 = TXD[0]
Description
Configures the pins of port H
The data register for port H
pull-up/down control register for port H
Description
01 = Output
11 = Reserved
01 = Output
11 = Reserved
01 = Output
11 = Reserved
01 = Output
11 = Reserved
01 = Output
11 = Reserved
01 = Output
11 = Reserved
01 = Output
11 = Reserved
01 = Output
11 = nCTS2
01 = Output
11 = nRTS2
01 = Output
11 = Reserved
01 = Output
11 = Reserved
01 = Output
11 = reserved
01 = Output
11 = Reserved
01 = Output
11 = Reserved
01 = Output
11 = Reserved
S3C2451X RISC MICROPROCESSOR
–
Reset Value
0x0
0x0
0x15555555
–