Port Group Gpa1 Control Register - Samsung S5PC110 Manual

S5PC110_UM

2.2.3 PORT GROUP GPA1 CONTROL REGISTER

There are six control registers, namely, GPA1CON, GPA1DAT, GPA1PUD, GPA1DRV, GPA1CONPDN and
GPA1PUDPDN in the Port Group GPA1 Control Registers.
2.2.3.1 Port Group GPA1 Control Register (GPA1CON, R/W, Address = 0xE020_0020)
GPA1CON
GPA1CON[3]
GPA1CON[2]
GPA1CON[1]
GPA1CON[0]
Bit
[15:12] 0000 = Input
0001 = Output
0010 = UART_3_TXD
0011 = UART_2_RTSn
0100 ~ 1110 = Reserved
1111 = GPA1_INT[3]
[11:8] 0000 = Input
0001 = Output
0010 = UART_3_RXD
0011 = UART_2_CTSn
0100 ~ 1110 = Reserved
1111 = GPA1_INT[2]
[7:4] 0000 = Input
0001 = Output
0010 = UART_2_TXD
0011 = Reserved
0100 = UART_AUDIO_TXD
0101 ~ 1110 = Reserved
1111 = GPA1_INT[1]
[3:0] 0000 = Input
0001 = Output
0010 = UART_2_RXD
0011 = Reserved
0100 = UART_AUDIO_RXD
0101 ~ 1110 = Reserved
1111 = GPA1_INT[0]
2 GENERAL PURPOSE INPUT/ OUTPUT
Description Initial State
0000
0000
0000
0000
2-45