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參數(shù)資料
型號: W83787F
廠商: WINBOND ELECTRONICS CORP
英文描述: WINBOND I/O WITH SERIAL-INFRARED SUPPORT
中文描述: 華邦的I /串行O型紅外線支持
文件頁數(shù): 69/123頁
文件大小: 1751K
代理商: W83787F
W83787IF
Publication ReleaseDate:Sep 1995
- 69 -
Revision A1
7 6 5 4 3 2 1 0
FDCTRI
IDEPWD
FDCPWD
FIPURDWM
SEL4FDD
OSCS2
Reserved
IDETRI
Bit 7: Reserved
OSCS2 (Bit 6): This bit and OSCS1, OSCS0 (bit 1, 0 of CR0) select one of the W83787IF's
power-down functions. Refer to descriptions of CR0.
SEL4FDD (Bit 5): Selects four FDD mode
0
Selects two FDD mode (see Table 7-2)
1
Selects four FDD mode
DSA, DSB,
MOA and MOB output pins are encoded as show in Table 7-3 to select
four drives.
Table 7-2
DO REGISTER ( 3F2H )
Bit 7 Bit 6 Bit 5 Bit 4 Bit 1 Bit 0
MOB
MOA
DSB
DSA
DRIVE
SELECTED
0 0 0 0 0 0
1
1
1
1
--
0 0 0 1 0 0
1
0
1
0
FDD A
0 0 1 0 0 1
0
1
0
1
FDD B
0 0 1 0 0 1
1
1
1
1
--
1 0 0 0 1 1
1
1
1
1
--
Table 7-3
DO REGISTER ( 3F2H )
Bit 7 Bit 6 Bit 5 Bit 4 Bit 1 Bit 0
MOB
MOA
DSB
DSA
DRIVE
SELECTED
0 0 0 0 x x
1
1
x
x
--
0 0 0 1 0 0
0
0
0
0
FDD A
0 0 1 0 0 1
0
0
0
1
FDD B
0 1 0 0 1 0
0
0
1
0
FDD C
1 0 0 0 1 1
0
0
1
1
FDD D
FIPURDWN (Bit 4):
This bit controls the internal pull-up resistors of the FDC input pins RDATA, INDEX, TRAK0,
DSKCHG, and WP.
0
The internal pull-up resistors of FDC are turned on.
1
The internal pull-up resistors of FDC are turned off.
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參數(shù)描述
W83787IF 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O WITH SERIAL-INFRARED SUPPORT
W83791D 制造商:WINBOND 制造商全稱:Winbond 功能描述:Winbond H/W Monitoring IC
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