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VT83C469 Datasheet(PDF) 21 Page - List of Unclassifed Manufacturers

Part # VT83C469
Description  PCMCIA Socket Controller
PDF  36 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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VT83C469 Datasheet(HTML) 21 Page - List of Unclassifed Manufacturers

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VIA Technologies, Inc.
Preliminary VT83C469
21
ATA Mode Control Register ( Read/Write )
Address : Index ( Base + 26h )
BIT
FUNCTION
D7
A25/CSEL.
In ATA mode, this bit is applied to the ATA A25/CSEL and is vendor specific. Certain ATA drive
vendor specific performance enhancements beyond the PCMCIA 2.0 standard may be controlled
through use of this bit. This bit has no hardware control function when not in ATA mode.
D6
A24/M/S#.
In ATA mode, this bit is applied to the ATA A24/M/S# and is vendor specific. Certain ATA drive
vendor specific performance enhancements beyond the PCMCIA 2.0 standard may be controlled
through use of this bit. This bit has no hardware control function when not in ATA mode.
D5
A23/VU.
In ATA mode, this bit is applied to the ATA A23/VU and is vendor specific. Certain ATA drive
vendor specific performance enhancements beyond the PCMCIA 2.0 standard may be controlled
through use of this bit. This bit has no hardware control function when not in ATA mode.
D4
A22.
In ATA mode, this bit is applied to the ATA A22 and is vendor specific. Certain ATA drive vendor
specific performance enhancements beyond the PCMCIA 2.0 standard may be controlled through
use of this bit. This bit has no hardware control function when not in ATA mode.
9D3
A21.
In ATA mode, this bit is applied to the ATA A21 and is vendor specific. Certain ATA drive vendor
specific performance enhancements beyond the PCMCIA 2.0 standard may be controlled through
use of this bit. This bit has no hardware control function when not in ATA mode.
D2
R/W. 0
D1
Speaker is LED Input.
0: Normal operation.
1: The PC Card SPKR# pin will be used to drive IRQ12 if Drive LED Enable is set.
D0
ATA Mode.
0: Normal operation.
1: Configures the socket interface to handle ATA type III disk drives.
VIA ID Register (Read)
Address: Index (Base + 2Eh)
BIT
FUNCTION
D [7:4]
Major Version
R. 1000
D [3:0]
Minor Version
R. 0001



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