WJLXT972ALC.A4-857345 Cortina Systems Inc, WJLXT972ALC.A4-857345 Datasheet - Page 3

• Manufacturer Part Number: WJLXT972ALC.A4-857345
• Description: TXRX ETH 10/100 SGL PORT 64-LQFP
• Manufacturer: Cortina Systems Inc

Specifications of WJLXT972ALC.A4-857345

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 1008-1043-2

LXT972A PHY
Datasheet
249186, Revision 5.2
13 September 2007
Contents
1.0
2.0
3.0
4.0
5.0
Cortina Systems
Introduction to This Document .................................................................................................. 10
1.1
1.2
Block Diagram ............................................................................................................................. 11
Ball and Pin Assignments .......................................................................................................... 12
Signal Descriptions ..................................................................................................................... 15
Functional Description................................................................................................................ 21
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
Document Overview ...........................................................................................................10
Related Documents ............................................................................................................ 10
Device Overview ................................................................................................................. 21
5.1.1
5.1.2
Network Media / Protocol Support ...................................................................................... 22
5.2.1
5.2.2
5.2.3
Operating Requirements..................................................................................................... 25
5.3.1
5.3.2
Initialization ......................................................................................................................... 26
5.4.1
5.4.2
5.4.3
5.4.4
Establishing Link ................................................................................................................. 28
5.5.1
5.5.2
MII Operation ...................................................................................................................... 30
5.6.1
5.6.2
5.6.3
5.6.4
5.6.5
5.6.6
5.6.7
100 Mbps Operation ...........................................................................................................35
5.7.1
5.7.2
5.7.3
10 Mbps Operation ............................................................................................................. 42
5.8.1
5.8.2
5.8.3
5.8.4
5.8.5
5.8.6
5.8.7
®
LXT972A Single-Port 10/100 Mbps PHY Transceiver
Comprehensive Functionality ................................................................................ 21
Optimal Signal Processing Architecture.................................................................21
10/100 Network Interface....................................................................................... 22
MII Data Interface .................................................................................................. 23
Configuration Management Interface .................................................................... 23
Power Requirements ............................................................................................. 25
Clock Requirements ..............................................................................................26
MDIO Control Mode and Hardware Control Mode................................................. 26
Reduced-Power Modes ......................................................................................... 27
Reset .....................................................................................................................27
Hardware Configuration Settings ........................................................................... 28
Auto-Negotiation .................................................................................................... 29
Parallel Detection................................................................................................... 30
MII Clocks .............................................................................................................. 31
Transmit Enable..................................................................................................... 32
Receive Data Valid ................................................................................................ 32
Carrier Sense......................................................................................................... 33
Error Signals .......................................................................................................... 33
Collision .................................................................................................................33
Loopback ............................................................................................................... 33
100BASE-X Network Operations ........................................................................... 35
Collision Indication ................................................................................................. 37
100BASE-X Protocol Sublayer Operations............................................................ 38
10BASE-T Preamble Handling .............................................................................. 42
10BASE-T Carrier Sense....................................................................................... 42
10BASE-T Dribble Bits .......................................................................................... 42
10BASE-T Link Integrity Test ................................................................................ 42
Link Failure ............................................................................................................ 43
10BASE-T SQE (Heartbeat) .................................................................................. 43
10BASE-T Jabber .................................................................................................. 43
Contents
Page 3