APOLLO user manual
Issue G
100
PCI local bus
The ICH4 provides a 32bit, 33MHz PCI interface for use with onboard PCI devices and
PCI expansion cards. The table below shows the devices connected to the bus and their
corresponding vendor/device ID’s, IRQs and grant/request connections where appropriate.
PCI device Device
Vendor ID Device ID
PIRQ
GNT/RQT See note…
2 82551QM
10/100
Ethernet controller;
82541PI 10/100/1000
Ethernet controller.
8086h
8086h
1229h
1076h
G
G
2
2
1
7
Exar XR17D152 Dual
PCI UART.
13A8h 0152h A
N/A
8
82562ET 10/100
Ethernet controller.
8086h 1039h E
N/A
9
PC and Cardbus
controller;
PCI4510A function 0;
IEEE1394 Firewire
controller;
PCI4510A function 1.
104Ch
104Ch
AC44h
8029h
D
C
0
0
2
11
PCI Slot 0 (primary)
N/A
N/A
E, F, G, H
1
3
13
PCI Slot 1 (secondary)
N/A
N/A
F, G, H, E
3
3
15
PCI Slot 2 (tertiary)
N/A
N/A
G, H, E, F
4
3
Notes on table
1
The APOLLO V1Ix board has a Gigabit (82541PI) variant and two 10/100
Ethernet controller (82551QM) variants: standard and 600MHz Celeron M.
The APOLLO V2Ix board offers just the 82541PI Gigabit Ethernet controller.
2
The PCI4510A is a dual-function device: two functional devices in one
physical package.
3
The APOLLO routes two additional PCI grant/request lines to the single PCI
slot to allow for up to three PCI devices to be accessed when using a PCI
riser. It is strongly recommended to use a zero delay clock buffer to buffer the
33MHz PCI clock to any additional PCI devices. For connector details see
page
. Routing of the GNT4 signal to the PCI slot 2 is controlled via JP1;
see page
PCI Expansion connector
The APOLLO provides a single 33MHz 32bit 5V PCI bus expansion connector. All PCI
signals are 5V tolerant. The PCI expansion connector includes PCI auxiliary power for
devices requiring power during ACPI standby (S3) and soft off (S5) modes. The PCI
PME# power management signal is also provided for device wakeup.
