PCI7621 datasheet(104/298 Pages) TI

104 / 298 page

4−14

4.24 Interrupt Pin Register

The value read from this register is function dependent. The default value for function 0 is 01h (INTA), the default value

for function 1 is 02h (INTB), the default value for function 2 is 03h (INTC), the default value for function 3 is 01h (INTA),

the default value for function 4 is 01h (INTA), the default value for function 5 is 01h (INTA). The value also depends

on the values of bits 28, the tie-all bit (TIEALL), and 29, the interrupt tie bit (INTRTIE), in the system control register

(PCI offset 80h, see Section 4.29). The INTRTIE bit is compatible with previous TI CardBus controllers, and when

set to 1, ties INTB to INTA internally. The TIEALL bit ties INTA, INTB, INTC, and INTD together internally. The internal

interrupt connections set by INTRTIE and TIEALL are communicated to host software through this standard register

interface. This read-only register is described for all PCI7x21/PCI7x11 functions in Table 4−6.

PCI function 0

Bit

Name

Interrupt pin − PCI function 0

Type

Default

PCI function 1

Bit

Name

Interrupt pin − PCI function 1

Type

Default

PCI function 2

Bit

Name

Interrupt pin − PCI function 2

Type

Default

PCI function 3

Bit

Name

Interrupt pin − PCI function 3

Type

Default

PCI function 4

Bit

Name

Interrupt pin − PCI function 4

Type

Default

PCI function 5

Bit

Name

Interrupt pin − PCI function 5

Type

Default

PCI7621 Datasheet(PDF) 104 Page - Texas Instruments

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