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參數(shù)資料
型號: W83877AF
廠商: WINBOND ELECTRONICS CORP
元件分類: 外設及接口
英文描述: Multi-Function I/O Port Controller(多功能輸入/輸出口控制器)
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封裝: QFP-100
文件頁數(shù): 11/171頁
文件大小: 1634K
代理商: W83877AF
W83877AF
Publication Release Date: Dec. 1996
Preliminary Version 0.52
- 9 -
1.4 Multi-Mode Parallel Port
The following pins have eight functions, which are controlled by bits PRTMOD0, PRTMOD1, and
PRTMOD2 of CR0 and CR9. (refer to section 8.0, Extended Functions).
SYMBOL
PIN
I/O
FUNCTION
BUSY
24
IN
t
PRINTER MODE: BUSY
An active high input indicates that the printer is not ready to
receive data. This pin is pulled high internally. Refer to the
description of the parallel port for the definition of this pin in ECP
and EPP mode.
OD
12
EXTENSION FDD MODE: MOB2
This pin is for Extension FDD B; the function of this pin is the
same as that of the MOB pin.
EXTENSION ADAPTER MODE: XIRQ
This pin is an interrupt request generated by the Extension
Adapter and is an active high input.
IN
t
OD
12
EXTENSION 2FDD MODE: MOB2
This pin is for Extension FDD A and B; the function of this pin is
the same as that of the MOB pin.
JOYSTICK MODE: NC pin.
_
ACK
26
IN
t
PRINTER MODE: ACK
An active low input on this pin indicates that the printer has
received data and is ready to accept more data. This pin is
pulled high internally. Refer to the description of the parallel port
for the definition of this pin in ECP and EPP mode.
OD
12
EXTENSION FDD MODE: DSB2
This pin is for the Extension FDD B; its functions are the same
as those of the DSB pin.
EXTENSION ADAPTER MODE: XDRQ
DMA request generated by the Extension Adapter. An active
high input.
IN
t
OD
12
EXTENSION 2FDD MODE: DSB2
This pin is for Extension FDD A and B; this function of this pin is
the same as that of the DSB pin.
JOYSTICK MODE: NC pin.
_
相關PDF資料
PDF描述
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相關代理商/技術參數(shù)
參數(shù)描述
W83877ATD 制造商:WINBOND 制造商全稱:Winbond 功能描述:enhanced version from Winbonds most popular I/O chip W83877F
W83877ATF 制造商:WINBOND 制造商全稱:Winbond 功能描述:enhanced version from Winbonds most popular I/O chip W83877F
W83877F 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O
W83877TD 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O
W83877TF 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O