s3c4510b Samsung Semiconductor, Inc., s3c4510b Datasheet - Page 381

• Manufacturer Part Number: s3c4510b
• Description: 16/32-bit Risc Microcontroller
• Manufacturer: Samsung Semiconductor, Inc.

S3C4510B
I/O PORT CONTROL REGISTER (IOPCON)
The I/O port control register, IOPCON, is used to configure the port pins, P17–P8.
For the special input ports, S3C4510A provides 3-tap filtering. If the input signal levels are same for the three
system clock periods, that level is taken as input for dedicated signals such as external interrupt requests and
external DMA requests.
IOPCON
If the port is used for a special function such as an external interrupt request, an external DMA request,
or acknowledge signal and timer outputs, its mode is determined by the IOPCON register, not by
IOPMOD.
Register
Offset Address
0x5004
R/W
R/W
Table 12-2. IOPCON Register
I/O port control register
NOTE
Description
Reset Value
0x00000000
I/O PORTS
12-3