Instruction Manual

Table Of Contents

CP930 Functional Description

2. Functional Description

The following chapters present more detailed, board level information about the CP930

5-Channel Fast Ethernet Switch whereby the board components and their basic functionality

are discussed in general.

2.1 General Information

The CP930 is comprised basically of the following:

• Signal conditioning: either (depends on the variant)

• Galvanic isolation for CAT5 UTP cabling, or

• Full duplex transceiver for fiber optic links

• Fast Ethernet Switch

• 5- channel controller

• Integrated (on chip):

•MAC

•PHY

• 1 Mbit Frame buffer

• MAC address aging time is about 300 seconds

• System interfaces for:

• Up to five Fast Ethernet channels

• Five RJ45, 8-contact, female connectors for CAT5 UTP cabling

(CON3 and CON4 or CON6)

• One MT-RJ type fiber optic transceiver connector for fiber optic linking with

1300 nm (CON5 if populated)

• Power Supply

• CompactPCI connector (CON1if populated)

• 4-pin Molex Connector (CON2 if populated)

• Monitor and Control

• Up to five sets of two operational status LED's for monitoring of link, activity, and op-

erational mode (link speed).

2.1.1 Signal Conditioning

Signal conditioning is a function of the type of network being serviced by the individual CP930

channel. Copper cabling networks are provided with galvanic isolation whereas the fiber optic

link is interfaced using an MT-RJ type fiber optic connector with integrated transceiver for full

duplex operation.

2.1.2 Fast Ethernet Switch Controller

The Fast Ethernet Switch controller is responsible for providing up to five channels of Fast

Ethernet MAC and PHY layer functionality, and for providing the power supply via either a Com-

pactPCI bus interface or a 4-pin Molex power connector. The switch also provides Auto-nego-

tiation, MDI / MDI-X auto crossover and non-blocking.