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參數資料
型號: W83697HF
廠商: WINBOND ELECTRONICS CORP
元件分類: 外設及接口
英文描述: WINBOND I/O
中文描述: MULTIFUNCTION PERIPHERAL, PQFP128
封裝: PLASTIC, QFP-128
文件頁數: 76/167頁
文件大?。?/td> 1094K
代理商: W83697HF
W83697HF/F
Publication Release Date: Feb. 2002
Revision 0.70
- 67 -
The contents of DB0-DB7 are buffered (non-inverting) and output to ports PD0-PD7 during a write
operation. The leading edge of IOW#
c
auses an EPP address write cycle to be performed, and the
trailing edge of IOW#
latches the data for the duration of the EPP write cycle.
PD0-PD7 ports are read during a read operation. The leading edge of IOR#
causes an EPP address read
cycle to be performed and the data to be output to the host CPU.
6.2.5 EPP Data Port 0-3
These four registers are available only in EPP mode. Bit definitions of each data port are as follows:
1
2
3
4
5
6
7
0
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
When accesses are made to any EPP data port, the contents of DB0-DB7 are buffered (non-inverting)
and output to the ports PD0-PD7 during a write operation. The leading edge of IOW#
causes an EPP
data write cycle to be performed, and the trailing edge of IOW#
latches the data for the duration of the
EPP write cycle.
During a read operation, ports PD0-PD7 are read, and the leading edge of
IOR#
causes an EPP read
cycle to be performed and the data to be output to the host CPU.
6.2.6 Bit Map of Parallel Port and EPP Registers
REGISTER
7
6
5
4
3
2
1
0
Data Port (R/W)
PD7
BUSY#
PD6
ACK#
PD5
PD4
PD3
ERROF#
PD2
PD1
PD0
Status Buffer (Read)
PE
SLCT
1
1
TMOUT
Control Swapper
(Read)
1
1
1
IRQEN
SLIN
INIT#
AUTOFD#
STROBE#
Control Latch (Write)
1
1
DIR
IRQ
SLIN
INIT#
AUTOFD#
STROBE#
EPP Address Port R/W)
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
EPP Data Port 0 (R/W)
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
EPP Data Port 1 (R/W)
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
EPP Data Port 2 (R/W)
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
EPP Data Port 3 (R/W)
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
相關PDF資料
PDF描述
W83697 WINBOND I/O
W83697F WINBOND I/O
W83697SF WINBOND I/O
W83757 SUPER I/O CHIP
W83759 ADVANCED VL-IDE DISK CONTROLLER
相關代理商/技術參數
參數描述
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