LSI LSI53C1030, Техническое руководство

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PCI-Related Signals 3-9
Version 2.1 Copyright © 2001, 2002, 2003 by LSI Logic Corporation. All rights reserved.
3.3 PCI-Related Signals
Table 3.7 describes the PCI-related signals.
Table 3.7 PCI-related Signals
Signal Name BGA Position Type Strength Description
ALT_INTA/ AF7 O 8 mA
PCI
Active LOW Alternate Interrupt A indicates
that PCI Function [0] is requesting service
from its host device driver. ALT_INTA/ is an
open drain signal. The interrupt request
routing mode bits, bits [9:8] in the PCI
Host
Interrupt Mask register, control the routing of
interrupt signals to INTA/ and/or ALT_INTA/.
ALT_INTB/ AB9 O 8 mA
PCI
Active LOW Alternate Interrupt B indicates
that PCI Function [1] is requesting service
from its host device driver. ALT_INTB/ is an
open drain signal. The interrupt request
routing mode bits, bits [9:8] in the PCI
Host
Interrupt Mask register, control the routing of
interrupt signals to INTB/ and/or ALT_INTB/.
PVT2, PVT1 AF4, AE5 I N/A PVT2 and PVT1 provide biasing for PCI
signals. Connect a 49.9
Ω,
1% resistor
between PVT2 and PVT1.