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PRELIMINARY
S3C6400 RISC MICROPROCESSOR
GPIO
10-
35
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.
PORT N CONTROL REGISTERS
There are three control registers including GPNCON, GPNDAT and GPNPUD in the Port N Control Registers.
Register
Address
R/W
Description
Reset Value
GPNCON 0x7F008830
R/W
Port
N
Configuration Register
0x00
GPNDAT
0x7F008834
R/W
Port N Data Register
Undefined
GPNPUD 0x7F008838
R/W
Port
N
Pull-up/down Register
0x55555555
GPNCON
Bit
Description
Initial State
GPN0
[1:0]
00 = Input
01 = Output
10 = Ext. Interrupt[0]
11 = Key pad ROW[0]
00
GPN1
[3:2]
00 = Input
01 = Output
10 = Ext. Interrupt[1]
11 = Key pad ROW[1]
00
GPN2
[5:4]
00 = Input
01 = Output
10 = Ext. Interrupt[2]
11 = Key pad ROW[2]
00
GPN3
[7:6]
00 = Input
01 = Output
10 = Ext. Interrupt[3]
11 = Key pad ROW[3]
00
GPN4
[9:8]
00 = Input
01 = Output
10 = Ext. Interrupt[4]
11 = Key pad ROW[4]
00
GPN5
[11:10]
00 = Input
01 = Output
10 = Ext. Interrupt[5]
11 = Key pad ROW[5]
00
GPN6
[13:12]
00 = Input
01 = Output
10 = Ext. Interrupt[6]
11 = Key pad ROW[6]
00
GPN7
[15:14]
00 = Input
01 = Output
10 = Ext. Interrupt[7]
11 = Key pad ROW[7]
00
GPN8
[17:16]
00 = Input
01 = Output
10 = Ext. Interrupt[8]
11 = ADDR_CF[0]
00
GPN9
[19:18]
00 = Input
01 = Output
10 = Ext. Interrupt[9]
11 = ADDR_CF[1]
00
GPN10
[21:20]
00 = Input
01 = Output
10 = Ext. Interrupt[10] 11 = ADDR_CF[2]
00
GPN11
[23:22]
00 = Input
01 = Output
10 = Ext. Interrupt[11] 11 = Reserved
00
GPN12
[25:24]
00 = Input
01 = Output
10 = Ext. Interrupt[12] 11 = Reserved]
00
GPN13
[27:26]
00 = Input
01 = Output
10 = Ext. Interrupt[13] 11 = Reserved
00
GPN14
[29:28]
00 = Input
01 = Output
10 = Ext. Interrupt[14] 11 = Reserved
00
GPN15
[31:30]
00 = Input
01 = Output
10 = Ext. Interrupt[15] 11 = Reserved
00