Samsung S3C6400X User Manual page 229

GPIO
GPA7 [31:28]
GPADAT
GPA[7:0]
GPAPUD
GPA[n]
GPACONSLP
GPA[n] [2n+1:2n]
GPAPUDSLP
GPA[n]
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.
8
10-
0000 = Input
0010 = UART RTSn[1] 0011 = Reserved
0100 = Reserved
0110 = Reserved
Bit
[7:0] 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.
Bit
[2n+1:2n] 00 = pull-up/down disabled
n = 0~7 01 = pull-down enabled
10 = pull-up enabled
11 = Reserved.
Bit
00 = output 0
n = 0~7 01 = output 1
10 = input
11 = Previuos state
Bit
[2n+1:2n] 00 = pull-up/down disabled
n = 0~7 01 = pull-down enabled
10 = pull-up enabled
11 = Reserved.
S3C6400 RISC MICROPROCESSOR
0001 = Output
0101 = ADDR_CF[1]
0111 = External Interrupt Group 1 [7]
Description
Description
Description
Description
0000
Initial State
00