
Datasheet
3
Fast Ethernet 10/100 Hex Transceiver with Full MII — LXT9763
Contents
1.0
Functional Description
...........................................................................................16
1.1
Introduction..........................................................................................................16
1.1.1
OSP
Architecture................................................................................16
1.1.2
Comprehensive Functionality.................................................................16
1.2
Interface Descriptions..........................................................................................17
1.2.1
10/100 Network Interface .......................................................................17
1.2.2
Twisted-Pair Interface ............................................................................17
1.2.3
Fiber Interface ........................................................................................18
1.2.4
Configuration Management Interface.....................................................18
1.2.5
MDIO Management Interface.................................................................18
1.3
MII Addressing ....................................................................................................18
1.3.1
Hardware Control Interface ....................................................................20
1.3.2
MII Data Interface...................................................................................20
1.4
Operating Requirements.....................................................................................20
1.4.1
Power Requirements..............................................................................20
1.5
Clock Requirements............................................................................................21
1.5.1
Reference Clock.....................................................................................21
1.6
Initialization..........................................................................................................21
1.6.1
Power-Down Mode.................................................................................22
1.6.2
Reset......................................................................................................22
1.7
Hardware Configuration Settings ........................................................................23
1.8
Establishing Link .................................................................................................24
1.8.1
Auto-Negotiation.....................................................................................24
1.9
MII Operation.......................................................................................................25
1.9.1
Transmit Clock .......................................................................................26
1.9.2
Transmit Enable .....................................................................................26
1.9.3
Receive Data Valid.................................................................................26
1.9.4
Error Signals...........................................................................................26
1.9.5
Carrier Sense .........................................................................................27
1.9.6
Collision..................................................................................................27
1.9.7
Loopback................................................................................................27
1.10
100 Mbps Operation............................................................................................28
1.10.1 100BASE-X Network Operations ...........................................................28
1.10.2 100BASE-X Protocol Sublayer Operations ............................................29
1.11
10 Mbps Operation..............................................................................................33
1.11.1 10T Preamble Handling..........................................................................34
1.11.2 10T Carrier Sense..................................................................................34
1.11.3 10T Dribble Bits......................................................................................34
1.11.4 10T Link Test..........................................................................................34
1.12
Monitoring Operations.........................................................................................35
1.12.1 Monitoring Auto-Negotiation...................................................................35
1.12.2 Per-Port LED Driver Functions...............................................................35
1.13
Boundary Scan (JTAG1149.1) Functions............................................................36
1.13.1 Boundary Scan Interface........................................................................36
1.13.2 State Machine ........................................................................................36
1.13.3 Instruction Register ................................................................................36