PD6710/’22 — ISA-to-PC-Card (PCMCIA) Controllers
Bit 1 — Speaker Is LED Input
0
1
Normal operation.
The PC Card -SPKR pin will be used to drive IRQ12 if Drive LED Enable (see “Bit 4 — Drive
LED Enable” on page 73) is set.
This bit changes the function of the BVD2/-SPKR/-LED pin (see Table 2 on page 20) from digital
speaker input to disk status LED input. When in I/O Card Interface mode or ATA mode, setting this
bit to ‘1’ reconfigures the BVD2/-SPKR/-LED input pin to serve as a -LED input from the socket.
Note: This bit should be set to ‘0’ if in Memory Card Interface mode.
Bit 3 — A21
In ATA mode, the value in this bit is applied to the ATA A21 pin and is vendor-specific. Certain
ATA drive vendor-specific performance enhancements beyond the PC Card Standard may be
controlled through use of this bit. This bit has no hardware control function when not in ATA mode.
Bit 4 — A22
In ATA mode, the value in this bit is applied to the ATA A22 pin and is vendor-specific. Certain
ATA drive vendor-specific performance enhancements beyond the PC Card Standard may be
controlled through use of this bit. This bit has no hardware control function when not in ATA mode.
Bit 5 — A23/VU
In ATA mode, the value in this bit is applied to the ATA A23 pin and is vendor-specific. Certain
ATA drive vendor-specific performance enhancements beyond the PC Card Standard may be
controlled through use of this bit. This bit has no hardware control function when not in ATA mode.
Bit 6 — A24/M/S*
In ATA mode, the value in this bit is applied to the ATA A24 pin and is vendor-specific. Certain
ATA drive vendor-specific performance enhancements beyond the PC Card Standard may be
controlled through use of this bit. This bit has no hardware control function when not in ATA mode.
Bit 7 — A25/CSEL
In ATA mode, the value in this bit is applied to the ATA A25 pin and is vendor-specific. Certain
ATA drive vendor-specific performance enhancements beyond the PC Card Standard may be
controlled through use of this bit. This bit has no hardware control function when not in ATA mode.
76
Datasheet
INTEL [ INTEL ]
