Samsung S3C6400X User Manual page 230

S3C6400 RISC MICROPROCESSOR
PORT B CONTROL REGISTER
There are five control registers including GPBCON, GPBDAT, GPBPUD, GPBCONSLP and GPBPUDSLP in the
Port B Control Registers.
Register
GPBCON 0x7F008020
GPBDAT 0x7F008024
GPBPUD 0x7F008028
GPBCONSLP 0x7F00802C
GPBPUDSLP 0x7F008030
GPBCON
GPB0
GPB1
GPB2
GPB3 [15:12]
GPB4 [19:16]
GPB5 [23:20]
GPB6 [27:24]
Address R/W
R/W
R/W
R/W
R/W
R/W
Bit
[3:0] 0000 = Input
0010 = UART RXD[2]
0100 = IrDA RXD
0110 = Reserved
[7:4] 0000 = Input
0010 = UART TXD[2]
0100 = IrDA TXD
0110 = Reserved
[11:8] 0000 = Input
0010 = UART RXD[3]
0100 = Ext. DMA Req
0110 = Reserved
0000 = Input
0010 = UART TXD[3]
0100 = Ext. DMA Ack
0110 = Reserved
0000 = Input
0010 = IrDA SDBW
0100 = CF Data Dir
0110 = Reserved
0000 = Input
0010 = I2C SCL
0100 = Reseved
0110 = Reserved
0000 = Input
0010 = I2C SDA
0100 = Reseved
0110 = Reserved
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
Description
Port B Configuration Register
Port B Data Register
Port B Pull-up Register
Port B Sleep mode Configuration Register
Port B Sleep mode Pull-up/down Register
Description
0001 = Output
0011 = Ext. DMA Request
0101 = ADDR_CF[0]
0111 = External Interrupt Group 1[8]
0001 = Output
0011 = Ext. DMA Ack
0101 = ADDR_CF[1]
0111 = External Interrupt Group 1[9]
0001 = Output
0011 = IrDA RXD
0101 = ADDR_CF[2]
0111 = External Interrupt Group 1[10]
0001 = Output
0011 = Irda TXD
0101 = Reserved
0111 = External Interrupt Group 1[11]
0001 = Output
0011 = Reserved
0101 = Reserved
0111 = External Interrupt Group 1[12]
0001 = Output
0011 = reserved
0101 = Reserved
0111 = External Interrupt Group 1[13]
0001 = Output
0011 = reserved
0101 = Reserved
0111 = External Interrupt Group 1[14]
GPIO
Reset Value
0x40000
Undefined
0x00001555
0x0
0x0
Initial State
0000
0000
0000
0000
0100
0000
0000
9
10-