Samsung S3C2440A - Manual (Page 259)

S3C2440A RISC MICROPROCESSOR I/O PORTS
9-13
PORT D CONTROL REGISTERS(GPDCON, GPDDAT, GPDUP)
Register Address R/W Description Reset Value
GPDCON 0x56000030 R/W Configures the pins of port D 0x0
GPDDAT 0x56000034 R/W The data register for port D Undef.
GPDUP 0x56000038 R/W pull-up disable register for port D 0xf000
Reserved 0x5600003c -
GPDCON Bit Description
GPD15 [31:30] 00 = Input 01 = Output
10 = VD[23] 11 = nSS0
GPD14 [29:28] 00 = Input 01 = Output
10 = VD[22] 11 = nSS1
GPD13 [27:26] 00 = Input 01 = Output
10 = VD[21] 11 = Reserved
GPD12 [25:24] 00 = Input 01 = Output
10 = VD[20] 11 = Reserved
GPD11 [23:22] 00 = Input 01 = Output
10 = VD[19] 11 = Reserved
GPD10 [21:20] 00 = Input 01 = Output
10 = VD[18] 11 = SPICLK1
GPD9 [19:18] 00 = Input 01 = Output
10 = VD[17] 11 = SPIMOSI1
GPD8 [17:16] 00 = Input 01 = Output
10 = VD[16] 11 = SPIMISO1
GPD7 [15:14] 00 = Input 01 = Output
10 = VD[15] 11 = Reserved
GPD6 [13:12] 00 = Input 01 = Output
10 = VD[14] 11 = Reserved
GPD5 [11:10] 00 = Input 01 = Output
10 = VD[13] 11 = Reserved
GPD4 [9:8] 00 = Input 01 = Output
10 = VD[12] 11 = Reserved
GPD3 [7:6] 00 = Input 01 = Output
10 = VD[11] 11 = Reserved
GPD2 [5:4] 00 = Input 01 = Output
10 = VD[10] 11 = Reserved
GPD1 [3:2] 00 = Input 01 = Output
10 = VD[9] 11 = Reserved
GPD0 [1:0] 00 = Input 01 = Output
10 = VD[8] 11 = Reserved