CDB8952 Cirrus Logic Inc, CDB8952 Datasheet - Page 2

• Manufacturer Part Number: CDB8952
• Description: Development Kit
• Manufacturer: Cirrus Logic Inc

Specifications of CDB8952

• Silicon Manufacturer: Cirrus Logic
• Application Sub Type: 10Base-T & 100Base-X Transceiver
• Kit Application Type: Communication & Networking
• Silicon Core Number: CS8952
• Kit Contents: Evaluation Board
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

INTRODUCTION
This manual provides information specifically on
the CDB8952 Evaluation board and generally on
any design incorporating the CS8952 Crystal-
LAN
The reader should have a general knowledge of
hardware design and Ethernet operation.
Background Information
•
•
•
Evaluation Kit Contents
The CDB8952 Evaluation Board Kit includes the
following:
BOARD CONFIGURATION
I/O Connectors
J1 - External TX_CLK. This connector may be
used to supply TX_CLK when HDR42 and HDR43
are set appropriately.
J2 - RJ45, Twisted-pair Media (Table 2).
2
IEEE Std 802.3u-1995 (ISO/IEC 8802.3:1996)
CSMA/CD Access Method and Physical Layer
Specifications
IEEE Std 802.3u-1995 Supplement Clause 28
(Auto-
CS8952
100Base-X Transceiver Datasheet
TM
Quantity
10Base-T and 100Base-X Transceiver.
1
1
1
1
N
Table 1. Evaluation Kit Contents
egotiation)
Table 2. Twisted-pair Media
CrystalLAN
CDB8952 Evaluation Board
CS8952 Datasheet
CDB8952 Reference Manual
CDB8952 Kit Packing List
Pin
1
2
3
4
5
6
7
8
Function
RD+
TD+
RD-
TD-
CIRRUS LOGIC ADVANCED PRODUCT DATABOOK
TM
-
-
-
-
Item
10Base-T
and
Crystal LAN™ 10Base-T and 100Base-X Transceiver
J5 - MII Power. When the board is connected to a
system that does not supply power through the MII
connector, +5 V or +3.3 V must be supplied here.
J6 - CS8952 Core Power. +5 V must be supplied
here from either J5 (if +5 V is supplied through the
MII connector) or an external power supply.
J13 - MII Connector (Table 3).
Configuration Jumpers and Switches
S1 - Board Reset. Depressing this push-button
switch will force the CS8952 into a reset state.
S2 - Test 1 (not populated). This switch is used to
select a factory test mode, and should not be
pressed during normal operation.
S3 - Physical Address Select. This 5-position
switch is used to select the physical address to
which the CS8952 will respond. “Open” or “Off”
will set the corresponding physical address bit to
ZERO, while “Closed” or “On” will set it to ONE.
The CS8952 checks the positions of this switch
only during power-up or reset. If any switch posi-
tion is changed, a reset or power cycle is required
before the new settings will take effect.
Pin
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
RX_ER/RXD4
TX_ER/TXD4
MII Power
MII Power
Function
RX_CLK
TX_CLK
RX_DV
TX_EN
RXD3
RXD2
RXD1
RXD0
MDIO
TXD0
TXD1
TXD2
TXD3
MDC
COL
CRS
Table 3. MII Connector
Pin
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
MII Power
MII Power
Function
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
CDB8952
DS206DB2