![](http://datasheet.mmic.net.cn/330000/PCI1221GHK_datasheet_16443867/PCI1221GHK_63.png)
PCI1221 GHK/PDV
PC CARD CONTROLLERS
SCPS042 – JULY 1998
63
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Table 22. Multifunction Routing Register (Continued)
BIT
SIGNAL
TYPE
FUNCTION
23–20
MFUNC5
R/W
Multifunction terminal 5 configuration. These bits control the internal signal mapped to the MFUNC5
terminal as follows:
0000 – GPI4 = General-purpose input (default)
0001 – GPO4 = General-purpose output
0010 – RSVD
0011 – IRQ3 = Parallel ISA type IRQ3
0100 – IRQ4 = Parallel ISA type IRQ4
0101 – IRQ5 = Parallel ISA type IRQ5
0110 – ZVSTAT = Zoom video status output
0111 – ZVSEL1 = Zoom video function 1 select output
1000 – CAUDPWM = PWM output of CAUDIO CardBus terminal
1001 – IRQ9 = Parallel ISA type IRQ9
1010 – IRQ10 = Parallel ISA type IRQ10
1011 – IRQ11 = Parallel ISA type IRQ11
1100 – LEDA1 = Socket 0 activity LED
1101 – LED_SKT = Socket 0 or socket 1 activity LED
1110 – GPE = General-Purpose event signal
1111 – IRQ15 = Parallel ISA type IRQ15
19–16
MFUNC4
R/W
Multifunction terminal 4 configuration. These bits control the internal signal mapped to the MFUNC4
terminal as follows:
NOTE: When the serial bus mode is implemented by pulling down the LATCH terminal, the MFUNC4
terminal provides the SCL signaling.
0000 – GPI3 = General-purpose input (default)
0001 – GPO3 = General-purpose output
0010 – LOCK PCI = Atomic transfer support mechanism
0011 – IRQ3 = Parallel ISA type IRQ3
0100 – IRQ4 = Parallel ISA type IRQ4
0101 – IRQ5 = Parallel ISA type IRQ5
0110 – ZVSTAT = Zoom video status output
0111 – ZVSEL1 = Zoom video function 1 select output
1000 – CAUDPWM = PWM output of CAUDIO CardBus terminal
1001 – IRQ9 = Parallel ISA type IRQ9
1010 – IRQ10 = Parallel ISA type IRQ10
1011 – IRQ11 = Parallel ISA type IRQ11
1100 – RI_OUT = Ring-indicate output
1101 – LED_SKT = Socket 0 or socket 1 activity LED
1110 – GPE = General-purpose event signal
1111 – IRQ15 = Parallel ISA type IRQ15
15–12
MFUNC3
R/W
Multifunction terminal 3 configuration. These bits control the internal signal mapped to the MFUNC3
terminal as follows:
0000 – RSVD = Reserved input – high impedance
0001 – IRQSER = Serial interrupt stream, IRQ and optional PCI (default)
0010 – IRQ2 = Parallel ISA type IRQ2
0011 – IRQ3 = Parallel ISA type IRQ3
0100 – IRQ4 = Parallel ISA type IRQ4
0101 – IRQ5 = Parallel ISA type IRQ5
0110 – IRQ6 = Parallel ISA type IRQ6
0111 – IRQ7 = Parallel ISA type IRQ7
1000 – IRQ8 = Parallel ISA type IRQ8
1001 – IRQ9 = Parallel ISA type IRQ9
1010 – IRQ10 = Parallel ISA type IRQ10
1011 – IRQ11 = Parallel ISA type IRQ11
1100 – IRQ12 = Parallel ISA type IRQ12
1101 – IRQ13 = Parallel ISA type IRQ13
1110 – IRQ14 = Parallel ISA type IRQ14
1111 – IRQ15 = Parallel ISA type IRQ15