ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22
Bits 4:1 — PD67XX Revision Level
This field identifies the revision of the controller. The initial value is ‘111’.
Bit 5 — Dual/Single Socket*
0
1
Chip identified as a single-socket controller.
Chip identified as a dual-socket controller.
This bit specifies the number of sockets supported by the PD67XX.
Bits 7:6 — PC Card Controller Identification
00
11
Second read after I/O write to this register.
First read after I/O write to this register.
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
Register Name: ATA Control
Index: 26h
Register Per: socket
Register Compatibility Type: ext.
Bit 7
A25/CSEL
RW:0
Bit 6
A24/M/S*
RW:0
Bit 5
A23/VU
RW:0
Bit 4
A22
Bit 3
A21
Bit 2
Bit 1
Bit 0
ATA Mode
RW:0
Scratchpad
Bit
Speaker Is
LED Input
RW:0
RW:0
RW:0
RW:0
Bit 0 — ATA Mode
0
1
Normal operation.
Configures the socket interface to handle ATA-type disk drives.
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.
Datasheet
75
INTEL [ INTEL ]
