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