CS8900-CQ3 Cirrus Logic, CS8900-CQ3 Datasheet - Page 9

• Manufacturer Part Number: CS8900-CQ3
• Description: Crystal LAN ISA Ethernet Controller
• Manufacturer: Cirrus Logic

DS271PP3
tive portable and desktop PCs. Motherboard design
options include:
•
•
1.2.2 Ethernet Adapter Cards
The CS8900A’s highly efficient PacketPage archi-
tecture, with StreamTransfer™ and Auto-Switch
DMA options, make it an excellent choice for high-
performance,
(Figure 2). The CS8900A’s wide range of configu-
ration options and performance features allow en-
CS8900A
Crystal LAN™ ISA Ethernet Controller
An EEPROM can be used to store node-specif-
ic information, such as the Ethernet Individual
Address and node configuration.
The 20 MHz crystal oscillator may be replaced
by a 20 MHz clock signal.
low-cost
A
S
I
ISA
Figure 1. Complete Ethernet Motherboard Solution
Boot PROM
Figure 2. Full-Featured ISA Adapter Solution
EEPROM 20 MHz
CIRRUS LOGIC PRODUCT DATA SHEET
’245
adapter
CS8900A
XTAL
EEPROM
cards
CS8900A
20 MHz
XTAL
gineers to design Ethernet solutions that meet their
particular system requirements. Adapter card de-
sign options include:
•
•
•
•
A Boot PROM can be added to support diskless
applications.
The 10BASE-T transmitter and receiver im-
pedance can be adjusted to support 100, 120, or
150 Ohm twisted pair cables.
An external Latchable-Address-bus decode cir-
cuit can be added to operate the CS8900A in
Upper-Memory space.
On-chip LED ports can be used for either op-
tional LEDs, or as programmable outputs.
(2.0 sq. in.)
RJ-45
10BASE-T
RJ-45
LED
Attachment
Interface
(AUI)
Unit
9