![Samsung S3C2451X Скачать руководство пользователя страница 285](http://html.mh-extra.com/html/samsung/s3c2451x/s3c2451x_user-manual_340826285.webp)
Preliminary
S3C2451X RISC MICROPROCESSOR
I/O PORTS
11-29
GPK0
[1:0]
00 : Input 01 : Output
10 : Sdata[16] 11 : Reserved
PORT K CONTROL REGISTERS (GPKCON, GPKDAT, GPKUDP) (Continued)
GPKDAT Bit
Description
GPK[15:0]
[31:0]
When the port is configured as an input port, the corresponding bit is the
pin state. When the port is configured as an 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.
GPKUDP
Bit
Description
GPKUDP15
~
GPKUDP0
[31:30]
~
[1:0]
[CPU:CPD]
00 : pull-up/down disable
01 : pull-down enable
10 : pull-up enable
11 : not-available