W83697HFFDC Information Storage Devices, Inc, W83697HFFDC Datasheet - Page 151
W83697HFFDC
Manufacturer Part Number
W83697HFFDC
Description
LPC Interface I/o Plus Game/midi Port, Fan Control, Flash ROM I/f
Manufacturer
Information Storage Devices, Inc
Datasheet
1.W83697HFFDC.pdf
(167 pages)
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CRF2 (Default 0xFF)
CRF4 (Default 0x00)
FDD0 Selection:
CRF5 (Default 0x00)
FDD1 Selection: Same as FDD0 of CRF4.
Bit 3 - 2 : Density Select
Bit 1
Bit 0:
Bit 7 - 6 : FDD D Drive Type
Bit 5 - 4 : FDD C Drive Type
Bit 3 - 2 : FDD B Drive Type
Bit 1 - 0 : FDD A Drive Type
Bit 7:
Bit 6
Bit 5
Bit 4 - 3 : DRTS1, DRTS0: Data Rate Table select (Refer to TABLE A).
Bit 2
Bit 1:0
= 00 Normal (Default)
= 01 Normal
= 10 1 ( Forced to logic 1)
= 11 0 ( Forced to logic 0)
: DISFDDWR
= 0
= 1
SWWP
= 0
= 1
Reserved.
: Pre-comp Disable.
= 1
= 0
: Reserved.
= 00 Select Regular drives and 2.88 format
= 01 3-mode drive
= 10 2 Meg Tape
= 11 Reserved
: Reserved.
: DTYPE0, DTYPE1: Drive Type select (Refer to TABLE B).
Enable FDD write.
Disable FDD write(forces pins WE, WD stay high).
Normal, use WP to determine whether the FDD is write protected or not.
FDD is always write-protected.
Disable FDC Pre-compensation.
Enable FDC Pre-compensation.
- 142 -
Publication Release Date: Feb. 2002
W83697HF/F
Revision 0.70
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