PD6710 Datasheet, PDF (51/138 Pages) Intel Corporation – ISA-to-PC-Card (PCMCIA) Controllers

ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22
7.4
Interrupt and General Control
Register Name: Interrupt and General Control
Index: 03h
Bit 7
Bit 6
Bit 5
Bit 4
Ring Indicate
Enable
Card Reset*
Card Is I/O
Enable
Manage Int
RW:0
RW:0
RW:0
RW:0
Bit 3
Bits 3:0 — Card IRQ Select
Bit 2
Register Per: socket
Register Compatibility Type: 365
Bit 1
Bit 0
Card IRQ Select
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 PD6722, this output may alternately be used as an ISA bus DACK* signal)
IRQ 10 (On the 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)
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
Card status management interrupts occur as programmed by Management IRQ Select bits (bits
0
7:4 of Management Interrupt Configuration register, see “Bits 7:4 — Management IRQ
Select” on page 55).
1
Card status management interrupts are redirected to the -INTR line instead of the programmed
IRQ pin.
This bit determines how management interrupts will occur.
Datasheet
51