User guide

CP932 Functional Description

30048.01.UG.VC.050622/191301

P R E L I M I N A R Y

2. Functional Description

The following chapters present more detailed, board level information about the CP932 Gigabit

Ethernet switch whereby the board components and their basic functionality are discussed in

general.

2.1 General Information

The CP932 is comprised basically of the following:

• Gigabit Ethernet switch controller

• Five-channel controller on the five-channel variant of the CP932

• Eight-channel controller on the six-channel variant of the CP932

• Integrated (on chip):

• MAC for all channels

• PHY for four channels

• External PHYs:

• One external PHY on the five-channel variant of the CP932

• Two external PHYs on the six-channel variant of the CP932

• System interfaces for:

• Up to six Gigabit Ethernet channels

• Five RJ45, 8-pin, female connectors for CAT5 UTP or better cabling (J4A - J4D

and J5)

• One PCI NIC channel (only on the six-channel variant)

• Power Supply

• CompactPCI connector (J1)

• 4-pin ATX Power Connector (J2), only on the five-channel variant

• Monitor and Control

• Five sets of two integrated bicolor LEDs for each RJ45 for monitoring of link, activity,

and speed

• One set of three onboard LEDs for monitoring of link, activity, and speed of the Gigabit

Ethernet PCI interface

2.2 Gigabit Ethernet Switch Controller

The Gigabit Ethernet Switch controller is responsible for providing up to six channels of Gigabit

Ethernet MAC and PHY layer functionality. Depending on the variant, two different Gigabit

Ethernet switch controllers are used. The five-channel variant uses the Broadcom BCM5385

Gigabit Ethernet switch controller, whereas the six-channel variant uses the Broadcom

BCM5388 Gigabit Ethernet switch controller.

The highly integrated Broadcom BCM5388 and BCM5385 switch controllers combine all the

functions of a high-speed switch system, including packet buffer, PHY transceivers, media ac-

cess controllers, address management, and a non-blocking switch fabric into a single CMOS

device. They comply with the IEEE 802.3, 802.3u, 802.3ab, and 802.3x specifications, includ-

ing the MAC control, pause frame, and auto-negotiation subsections, providing compatibility

with all industry-standard Ethernet, Fast Ethernet, and Gigabit Ethernet devices.