CEC 1

CEC 2

CPU 1 CPU 2 CPU 3 CPU 4

400 MHz

3.2 GBps

 

 

 

32 MB

 

Processor &

L4 cache

3.2 GBps

cache controller

 

 

 

SMP Expansion Ports (3.2GBps)

CPU 4

 

CPU 3

 

CPU 2

 

CPU 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.2 GBps

 

400 MHz

 

 

 

 

 

 

 

 

 

 

 

 

Processor &

 

 

 

32 MB

cache controller

3.2 GBps

L4 cache

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.2 GBps

 

 

 

SDRAM

 

 

 

 

 

 

3.2 GBps

 

 

 

 

 

 

 

 

 

 

 

Memory

 

 

 

 

 

 

 

 

 

 

 

 

 

SDRAM

 

 

 

 

 

 

controller

 

 

 

 

 

 

3.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GBps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SDRAM

 

 

 

 

 

 

2 GBps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SDRAM

 

 

 

 

100 MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RXE

Expansion

Port B

(1 GBps)

3.2 GBps

Memory controller

2 GBps

3.2GBps

3.2 GBps

100 MHz

SDRAM SDRAM

SDRAM SDRAM

RXE Expansion

 

PCI bridge

66 MHz

Port A (1 GBps)

 

 

 

 

 

 

 

 

 

Bus A

PCI bridge

66 MHz

Ultra160

SCSI

Gigabit

Ethernet

33MHz

Video

USB

Kbd/Ms

RSA

B-100 C-133

D-133

IBM XA-32 core chipset

64-bit

64-bit

64-bit

66 MHz

100 MHz

133 MHz

Figure 1-5 xSeries 440 system block diagram — two SMP Expansion Modules

When two SMP Expansion Modules are installed, they are connected together using two 3.2 GBps SMP Expansion Ports. The third scalability port is not used in this single-node eight-way configuration.

The two PCI bridges in the XA-32 chipset provide support for 33, 66, 100, and

133MHz devices using four PCI-X buses (labeled A-D in Figure 1-5). This is discussed further in 1.8, “PCI subsystem” on page 23.

The PCI bridge also has a 1 GBps bi-directional Remote Expansion I/O port (RXE port) for connectivity to the RXE-100 enclosure. This port is labeled “RXE Expansion Port A” in both Figure 1-4 on page 8 (four-way) and Figure 1-5 (eight-way). The RXE-100 provides up to an additional 12 PCI-X slots. When the second SMP Expansion Module is installed to form an eight-way system (Figure 1-5), the second RXE port, labeled “RXE Expansion Port B”, connects to the memory controller of the second SMP Expansion Module.

10 IBM ^xSeries 440 Planning and Installation Guide

Page 24
Image 24
IBM 440 manual Cec