參數(shù)資料
型號: W83627SF
英文描述: W83627F plus Smart Card Reader Interface. VID Control. GP I/O?
中文描述: W83627F加上智能卡閱讀器接口。 VID控制。大獎賽的I / O?
文件頁數(shù): 86/147頁
文件大小: 1348K
代理商: W83627SF
W83627SF
PRELIMINARY
Publication Release Date: Nov. 2000
Revision 0.60
- 79 -
6.5 Extension 2FDD Mode (EXT2FDD)
In this mode, the W83627SF changes the printer interface pins to FDC input/output pins, allowing the
user to install two external floppy disk drives through the DB-25 printer connector to replace internal
floppy disk drives A and B. The pin assignments for the FDC input/output pins are shown in Table6-1.
After the printer interface is set to EXTFDD mode, the following occur:
(1) Pins MOA#, DSA#, MOB#, and DSB# will be forced to inactive state.
(2) Pins DSKCHG#, RDATA#, WP#, TRAK0#, and INDEX# will be logically ORed with pins PD4-PD0 to
serve as input signals to the FDC.
(3) Pins PD4-PD0 each will have an internal resistor of about 1K ohm to serve as pull-up resistor for FDD
open drain/collector output.
(4) If the parallel port is set to EXT2FDD mode after the system has booted DOS or another operating
system, a warm reset is needed to enable the system to recognize the extension floppy drive.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W83627SF_05 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O
W83627SF-AW 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O
W83627SF-PW 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O
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