CS8900-CQ View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS8900-CQ

Highly-Integrated ISA Ethernet Controller

Cirrus Logic 

CS8900

Definitions (continued)

Individual Address

The specific Ethernet address assigned to a device attached to the Ethernet media.

Inter-Packet Gap

Time interval between packets on the Ethernet. Minimum interval is 9.6 µs.

Jabber

A condition that results when a Ethernet node transmits longer than between 20 ms and 150 ms.

Packet

An Ethernet string of data bits that includes the Preamble, Start-of-Frame Delimiter (SFD),

Destination Address (DA), Source Address (SA), optional length field, Logical Link Control

data (LLC data), pad bits (if needed) and Frame Check Sequence (FCS). A packet is a frame

plus the Preamble and SFD.

Receive Collision

A receive collision occurs when the CI+/CI- inputs are active while a packet is being received.

Applies only to the AUI.

Signal Quality Error

When transmitting on the AUI, the MAC expects to see a collision signal on the CI+/CI- pair

within 64 bit times after the end of a transmission. If no collision occurs, there is said to be an

"SQE error". Applies only to the AUI.

Slot Time

Time required for an Ethernet Frame to cross a maximum length Ethernet network. One Slot

Time equals 512 bit times.

Transmit Collision

A transmit collision occurs when the receive inputs, RXD+/RXD- (10BASE-T) or CI+/CI-

(AUI) are active while a packet is being transmitted.

DS150PP2

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