s3c4510b Samsung Semiconductor, Inc., s3c4510b Datasheet - Page 383
s3c4510b
Manufacturer Part Number
s3c4510b
Description
16/32-bit Risc Microcontroller
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
1.S3C4510B.pdf
(422 pages)
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S3C4510B
I/O PORT DATA REGISTER (IOPDATA)
The I/O port data register, IOPDATA, contains one-bit read values for I/O ports that are configured to input mode
and one-bit write values for ports that are configured to output mode. Bits[17:0] of the 18-bit I/O port register
value correspond directly to the 18 port pins, P17–P0.
IOPDATA
Register
31
Offset Address
[17:0] I/O port read/write values for ports 17-0 (P0-P17)
NOTE:
0x5008
The values in the I/O port data register reflect the signal level on the
respective I/O port pins. When the ports are configured to output mode,
the bit reflects the ports write value. When the port is configured to input
mode, the bit reflects the ports read value.
Figure 12-4. I/O Port Data Register (IOPDATA)
R/W
R/W
Table 12-3. IOPDATA Register
I/O port data register
18 17
17
P
16
16
P
15
15
P
14
14
P
13
13
P
Description
12
12
P
11
11
P
10
10
P
P
9
9
8
P
8
P
7
7
P
6
6
P
5
5
P
4
4
P
3
3
P
2
2
Reset Value
Undefined
P
1
1
I/O PORTS
P
0
0
12-5
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