
PRELIMINARY DATA SHEET v3.1
CL-PD6710/’22
ISA–to–PC-Card Host Adapters
May 1997
42
CHIP CONTROL REGISTERS
6.4
Interrupt and General Control
Bits 3:0 — Card IRQ Select
These bits determine which IRQ will occur when the card causes an interrupt through the
RDY/-IREQ pin on the PC Card connector.
Bit 4 — Enable Manage Int
This bit determines how management interrupts will occur.
Bit 5 — Card Is I/O
This bit determines how dual-function socket interface pins will be used.
Register Name:
Interrupt and General Control
Index:
03h
Bit
7
Bit
6
Register Per: socket
Register Compatibility Type: 365
Bit
1
Bit
5
Bit
4
Bit
3
Bit
2
Bit
0
Ring Indicate
Enable
Card Reset*
Card Is I/O
Enable
Manage Int
Card IRQ Select
RW:0
RW:0
RW:0
RW:0
RW:0000
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
IRQ disabled
Reserved
Reserved
IRQ 3
IRQ 4
IRQ 5
Reserved
IRQ 7
Reserved
IRQ 9 (On the CL-PD6722, this output may alternately be used as an ISA bus DACK* signal)
IRQ 10 (On the CL-PD6722, this output may alternately be used as an ISA bus DRQ signal)
IRQ 11
IRQ 12 (This output may alternately be used for LED)
Reserved
IRQ 14
IRQ 15 (This output may alternately be used for ring indicate)
0
Card status management interrupts occur as programmed by Management IRQ Select bits (bits 7:4 of
Management Interrupt Configuration
register, see page
46
).
Card status management interrupts are redirected to the -INTR line instead of the programmed IRQ
pin.
1
0
Memory Card Interface mode: card socket configured to support memory cards. Dual-function socket
interface pins perform memory card-type interface functions.
I/O Card Interface mode: card socket configured to support I/O/memory card-type interface functions.
Dual-function socket interface pins perform I/O/memory card-type interface functions.
1