Logic Schematics; Component Placement And Signal Routing; Bill Of Material - Cirrus Logic CRYSTAL LAN CS890 Technical Reference Manual

2.1.3 Logic Schematics

Figures 2.1.2 and 2.2.5 detail the logic
schematics for the various circuits used in
the reference design.
2.1.4 Component Placement and Signal
Routing
Please refer to the Section 2.4 of this
document for more details on the placement
of components on the board. It is important
Item Reference #
1 C2, C5, C7..C14
2 C15, C16, C17
3 R2, R3
4 R1
5 R4
6* X1
7 J1
8 T1
9 U1
10* U3
* Depending on system resources, these parts may not be needed.
Table 2.1. CS8900 Motherboard Design Bill of Mater ials
AN83REV1
Description
Capacitor, 0.1 uF, X7R, SMT0805
Capacitor, 22 uF, SMT7343
Resistor, 24.3, 1%, 1/8W, SMT0805
Resistor, 100, 1%, 1/8W, SMT0805
Resistor, 4.99K, 1%, SMT0805
Crystal, 20.000 MHz
Connector, RJ45, 8 pin
Transformer, 2, 1:1, 1:1.41
ISA Ethernet Controller
1K EEPROM
CS8900 Technical Reference Manual
to provide very clean and adequate +5 V
and ground connections to the CS8900.

2.1.5 Bill of Material

Table 2.1 has a list components that are
typically used to assemble this adapter
card. For most of the components, there
are several alternative manufacturers.
Quantity Vendor
10
3
2
1
1
1 M-tron
1 AMP
1 Valor
1 Crystal
1 Microchip
Part Number
ATS-49,20.000 MHz,18 pF
555164-1
ST7011 (SOIC)
CS8900
93C46 (8 pin SOIC)
11