CEC 1

CPUs

L4 Cache Processor/cache controller Memory controller Memory DIMMs

2 GBps

 

RXE

 

 

 

 

 

 

 

2 GBps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Expansion

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Port A

PCI bridge

 

 

66 MHz

 

 

 

 

 

 

 

 

 

PCI bridge

 

(1 GBps)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A-66

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66 MHz

 

 

 

33 MHz

 

 

 

B-100

 

 

C-133

 

 

 

D-133

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Video

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ultra160

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCSI

 

 

 

 

 

 

USB

 

 

1

 

2

 

 

3

 

 

4

 

 

5

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Kbd/Ms

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gigabit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

64-bit

 

64-bit

64-bit

 

 

 

 

 

 

 

 

 

 

 

 

 

Ethernet

 

 

 

 

 

 

RSA

 

66 MHz

100 MHz 133 MHz

 

 

 

 

 

 

Figure 3-2 x440 block diagram showing the internal PCI-X slots

These slots can accept adapters rated at speeds ranging from 33 MHz to 133 MHz. When deciding which adapters to put in which slots, we recommend you use the Active PCI Manager wizard to help you determine the best slots to use. See 5.1, “Active PCI Manager” on page 130 for details.

You should also consider the following:

￿Each adapter has a maximum rated speed and each bus also has a maximum rated speed.

￿Installed adapters in a single bus will operate at the slowest of three speeds:

The rated speed of adapter 1

The rated speed of adapter 2 (if the bus the adapter is installed in has two slots)

The rated speed of the bus

￿Bus B supports one adapter at up to 133 MHz or two adapters at up to 100 MHz.

￿32-bit adapters can be installed in any of the slots and will run in 32-bit mode. 32-bit and 64-bit adapters can coexist in 64-bit slots in the same bus. The 32-bit adapters will run in 32-bit mode, and the 64-bit adapters will run in 64-bit mode.

Chapter 3. Planning 69

Page 83
Image 83
IBM manual X440 block diagram showing the internal PCI-X slots