LXT972 Level One, LXT972 Datasheet - Page 3

• Manufacturer Part Number: LXT972
• Description: 3.3V Dual-Speed Fast Ethernet Transceiver Datasheet
• Manufacturer: Level One

Application
Preliminary Test
Register Definitions
Monitoring Operations
Boundary Scan (JTAG) Functions
Electrical Parameters
Timing Diagrams
Monitoring Auto-Negotiation
LED
Boundary Scan Interface
State Machine
Instruction Register
Boundary Scan Register
Magnetics
Typical Twisted-Pair
Typical MII Interface
Absolute Maximum Ratings
Operating Conditions
Digital I/O
Digital I/O Characteristics - MII
I/O Characteristics - REFCLK/XI and XO Pins
I/O Characteristics - LED/CFG Pins
100BASE-TX Transceiver
10BASE-T Transceiver
10BASE-T Link Integrity Timing Characteristics
100BASE-TX Receive Timing - 4B Mode
100BASE-TX Transmit Timing - 4B Mode
10BASE-T Receive
10BASE-T Transmit
10BASE-T Jab and Unjab Timing
Auto Negotiation and Fast Link Pulse Timing
MDIO
Power-Up Timing
RESET Pulse Width and Recovery Timing
Control Register (Address 0)
Status Register (Address
PHY Identification Register 1 (Address 2)
PHY Identification Register 2 (Address 3)
A/N Advertisement Register (Address
A/N Link Partner Ability Register (Address 5)
Monitoring Next Page
LED Pulse Stretching
Functions......................................................... 29
Timing............................................................ 46
Information............................................ 32
Characteristics...................................... 37
Information............................................ 32
Specifications.............................. 36
......................................................... 31
..................................................... 40
.................................................... 47
................................................... 48
................................................ 31
Timing.................................... 42
............................................... 35
Interface............................... 34
Timing................................... 43
............................................. 36
............................................. 36
........................................... 29
Characteristics............... 38
....................................... 30
....................................... 31
(BSR)............................ 31
Exchange.................... 29
1).................................. 52
Characteristics.......... 38
.................................. 36
................................. 29
................................ 51
Pins.................... 37
........................ 44
...................... 31
.................... 38
4)............ 54
.......... 40
.......... 53
.......... 53
......... 41
........ 47
.... 45
.... 55
.. 37
39
Package Specifications
Revision History
A/N Expansion Register
(Address 6)
A/N Next Page Transmit Register (Address 7)
A/N Link Partner Next Page Receive Register
(Address 8)
Port Configuration Register (Address
Quick Status Register (Address 17)
Interrupt Enable Register (Address
Interrupt Status Register (Address
LED Configuration Register (Address 20)
Transmit Control Register (Address
..............................................................56
..............................................................57
.........................................................66
LXT972 Table of Contents
............................................65
19)................61
18)...............60
....................59
30)..............64
16)...........58
..........62
..57
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