Port B Control Registers (Gpbcon, Gpbdat, Gpbudp, Gpbsel) - Samsung S3C2416 User Manual

S3C2416 RISC MICROPROCESSOR

3.2 PORT B CONTROL REGISTERS (GPBCON, GPBDAT, GPBUDP, GPBSEL)

Register
GPBCON 0x56000010
GPBDAT 0x56000014
GPBUDP 0x56000018
GPBSEL 0x5600001c
GPBCON
Reserved
GPB10
GPB9
Reserved
Reserved
GPB6
GPB5
GPB4
GPB3
GPB2
GPB1
GPB0
GPBDAT
Reserved
GPBDAT[10:0]
Address R/W
R/W
R/W
R/W
R/W
Bit
[31:22] Reserved
[21:20] 00 = Input
10 = nXDREQ[0]
[19:18] 00 = Input
10 = nXDACK[0]
[17:16] Reserved
[15:14] Reserved
[13:12] 00 = Input
10 = nXBREQ
[11:10] 00 = Input
10 = nXBACK
[9:8] 00 = Input
10 = TCLK
[7:6] 00 = Input
10 = TOUT3
[5:4] 00 = Input
10 = TOUT2
[3:2] 00 = Input
10 = TOUT1
[1:0] 00 = Input
10 = TOUT0
Bit
[31:11] Reserved
[10:0] When the port is configured as input port, the corresponding bit is the pin
state. When the port is configured as output port, the pin state is the same
as the corresponding bit. When the port is configured as functional pin, the
undefined value will be read.
Description
Configures the pins of port B
The data register for port B
Pull-up/down control register for port B
Selects the function of port B
Description
01 = Output
11 = XDREQ[0]
01 = Output
11 = XDACK[0]
01 = Output
11 = XBREQ
01 = Output
11 = XBACK
01 = Output
11 = reserved
01 = Output
11 = reserved
01 = Output
11 = reserved
01 = Output
11 = reserved
01 = Output
11 = reserved
Description
I/O PORTS
Reset Value
0x0
0x0
0x00154555
0x1
10-11