DZPD6722VCCE INTEL [Intel Corporation], DZPD6722VCCE Datasheet - Page 75
DZPD6722VCCE
Manufacturer Part Number
DZPD6722VCCE
Description
ISA-to-PC-Card (PCMCIA) Controllers
Manufacturer
INTEL [Intel Corporation]
Datasheet
1.DZPD6722VCCE.pdf
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10.5
Datasheet
Register Name: ATA Control
Index: 26h
A25/CSEL
RW:0
Bit 7
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.
ATA Control
Bit 0 — ATA Mode
This bit reconfigures the particular socket as an ATA drive interface. Refer to
for PC Card socket pin definitions in ATA mode.
A24/M/S*
RW:0
Bit 6
00
11
0
1
0
1
Normal operation.
Configures the socket interface to handle ATA-type disk drives.
Chip identified as a single-socket controller.
Chip identified as a dual-socket controller.
Second read after I/O write to this register.
First read after I/O write to this register.
A23/VU
RW:0
Bit 5
RW:0
Bit 4
A22
ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22
RW:0
Bit 3
A21
Scratchpad
RW:0
Bit 2
Bit
Register Compatibility Type: ext.
Speaker Is
LED Input
RW:0
Bit 1
Table 17 on page 88
Register Per: socket
ATA Mode
RW:0
Bit 0
75
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