CS5320 datasheet(73/160 Pages) AMCC

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S5320 – PCI Match Maker: Operation Registers

Revision 5.03 – June 14, 2006

AMCC Confidential and Proprietary

DS1656

Data Sheet

Add-On Interrupt Control/status Register (AINT)

This register provides the method for choosing which

conditions are to produce an interrupt on the Add-On

bus interface, a method for viewing the cause for the

interrupt, and a method for acknowledging (removing)

the interrupt’s assertion.

Interrupt sources:

•

Incoming mailbox becomes full

•

Outgoing mailbox becomes empty

•

Built-in self test issued

Figure 32. Add-On Interrupt Control Status Register

Add-On Interrupt Control and Status

Add-On Address:

38h

Power-up value:

00000C0Ch

Attribute:

Read/Write, Read/Write Clear

Size:

32 bits

0 0 0 0

Add-On IMB

(Becomes full)

R/W

D4 = Enable Interrupt

D1 - D0 = Byte Number

00 = Byte 0

01 = Byte 1

10 = Byte 2

11 = Byte 3

X 0 0 X X 0 0 0

1 1

0 0 0

X 1 1

4 3 2

Interrupt Asserted (RO)

Incoming Mailbox

Interrupt (R/WC)

Outgoing Mailbox

Interrupt (R/WC)

Add-On OMB (Becomes Empty)

R/W

D12 = Enable Interrupt

D9 - D8 = Byte Number

00 = Byte 0

01 = Byte 1

10 = Byte 2

11 = Byte 3

Interrupt Selection

Interrupt Status

BIST (R/WC)

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