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SPD6722QCCE Datasheet(PDF) 75 Page - Intel Corporation

Part No. SPD6722QCCE
Description  ISA-to-PC-Card (PCMCIA) Controllers
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Maker  INTEL [Intel Corporation]
Homepage  http://www.intel.com
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SPD6722QCCE Datasheet(HTML) 75 Page - Intel Corporation

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ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22
Datasheet
75
Bits 4:1 — PD67XX Revision Level
This field identifies the revision of the controller. The initial value is ‘111’.
Bit 5 — Dual/Single Socket*
This bit specifies the number of sockets supported by the PD67XX.
Bits 7:6 — PC Card Controller Identification
This field identifies a PC Card controller device. After chip reset or doing an I/O write to this
register, the first read of this register will return ‘11’. On the next read, this field will be ‘00’. This
pattern of toggling data on subsequent reads can be used by software to determine presence of a PC
Card controller in a system or to determine occurrence of a device reset.
10.5
ATA Control
Bit 0 — ATA Mode
This bit reconfigures the particular socket as an ATA drive interface. Refer to Table 17 on page 88
for PC Card socket pin definitions in ATA mode.
0
Chip identified as a single-socket controller.
1
Chip identified as a dual-socket controller.
00
Second read after I/O write to this register.
11
First read after I/O write to this register.
Register Name: ATA Control
Index: 26h
Register Per: socket
Register Compatibility Type: ext.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
A25/CSEL
A24/M/S*
A23/VU
A22
A21
Scratchpad
Bit
Speaker Is
LED Input
ATA Mode
RW:0
RW:0
RW:0
RW:0
RW:0
RW:0
RW:0
RW:0
0
Normal operation.
1
Configures the socket interface to handle ATA-type disk drives.


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