CS8900
Highly-Integrated ISA Ethernet Controller
Features
• Single-Chip IEEE 802.3 Ethernet Controller with
Direct ISA-Bus Interface
• Efficient PacketPageTM Architecture Operates in I/O
and Memory Space, and as DMA Slave
• Full Duplex Operation
• On-Chip RAM Buffers Transmit & Receive Frames
• 10BASE-T Port with Analog Filters, Provides:
- Automatic Polarity Detection and Correction
• AUI Port for 10BASE2, 10BASE5 and 10BASE-F
• Programmable Transmit Features:
- Automatic Re-transmission on Collision
- Automatic Padding and CRC Generation
• Programmable Receive Features:
- StreamTransferTM for Reduced CPU Overhead
- Auto-Switch Between DMA and On-Chip Memory
- Early Interrupts for Frame Pre-Processing
- Automatic Rejection of Erroneous Packets
• EEPROM Support for Jumperless Configuration
• Boot PROM Support for Diskless Systems
• Boundary Scan and Loopback Test
• LED Drivers for Link Status and LAN Activity
• Standby and Suspend Sleep Modes
Description
The CS8900 is a low-cost Ethernet LAN Controller op-
timized for Industry Standard Architecture (ISA) Per-
sonal Computers. Its highly-integrated design elimi-
nates the need for costly external components required
by other Ethernet controllers. The CS8900 includes
on-chip RAM, 10BASE-T transmit and receive filters,
and a direct ISA-Bus interface with 24 mA Drivers.
In addition to high integration, the CS8900 offers a
broad range of performance features and configuration
options. Its unique PacketPage architecture automat-
ically adapts to changing network traffic patterns and
available system resources. The result is increased
system efficiency and minimized CPU overhead.
The CS8900 is available in a thin 100-pin TQFP pack-
age ideally suited for small form-factor, cost-sensitive
Ethernet applications, such as desktop and portable
motherboards and adapters. With the CS8900, system
engineers can design a complete Ethernet circuit that
occupies less than 1.5 square inches (10 sq. cm) of
board space.
ORDERING INFORMATION:
CS8900-CQ 0 to 70° C
CRD8900-1
100-pin TQFP
Evaluation Kit
EEPROM
20 MHz
XTAL
CS8900 ISA Ethernet Controller
EEPROM
Control
RAM
LED
Control
Clock
10BASE-T
RX Filters &
Receiver
I
ISA
S
Bus
A
Logic
Encoder/
Decoder
&
PLL
10BASE-T
TX Filters &
Transmitter
AUI
Transmitter
Memory
Manager
802.3
MAC
Engine
Boundary
Scan
Test Logic
Power
Manager
AUI
Collision
AUI
Receiver
RJ-45 10BASE-T
Attachment
Unit
Interface
(AUI)
Preliminary Product Information
This document contains information for a new product. Crystal
Semiconductor reserves the right to modify this product without notice.
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
(512) 445-7222 Fax: (512) 445-7581
Copyright © Crystal Semiconductor Corporation 1995
(All Rights Reserved)
DEC ’95
DS150PP2
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