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參數(shù)資料
型號: W6691
廠商: WINBOND ELECTRONICS CORP
英文描述: ISDN S/T Interface Transceiver
中文描述: 綜合業(yè)務(wù)數(shù)字網(wǎng)的S / T接口收發(fā)器
文件頁數(shù): 82/106頁
文件大小: 428K
代理商: W6691
Preliminary W6691
Publication Release Date: Sep 2001
82 Revision 1.1
8.9.4 Peripheral I/O Data Register
PIODR
Read/Write
Address 3BH
Value after reset: 00
7
6
5
4
3
2
1
0
0
0
0
0
IO3
IO2
IO1
IO0
Only for PLCC 68 pins :
IO3 Read or Write Data of Pin IO3
On read operation, the present value of pin IO3 is read.
On write operation, the data is driven to pin IO3 only if PCTL:OE3=1.
Note:
The ACLT2: INT1M bit should be set to “0”, INT1/IO3 pin can be as IO. Otherwise, It is configured as
interrupt input.
IO2 Read or Write Data of Pin IO2
On read operation, the present value of pin IO2 is read.
On write operation, the data is driven to pin IO2 only if PCTL:OE2=1.
Note:
The ACLT2: INT0M bit should be set to “0”, INT0/IO2 pin can be as IO. Otherwise, It is configured as
interrupt input.
IO1 Read or Write Data of Pin IO1
On read operation, the present value of pin IO1 is read.
On write operation, the data is driven to pin IO1 only if PCTL:OE1=1.
IO0 Read or Write Data of Pin IO0
On read operation, the present value of pin IO0 is read.
On write operation, the data is driven to pin IO0 only if PCTL:OE0=1.
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