lxt9781 Intel Corporation, lxt9781 Datasheet - Page 6

• Manufacturer Part Number: lxt9781
• Description: Fast Ethernet 10/100 Multi-port Transceiver With Rmii
• Manufacturer: Intel Corporation

LXT9761/9781 — Fast Ethernet 10/100 Multi-Port Transceiver with RMII
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LXT97x1 Power Supply Signal Descriptions....................................................... 18
LXT97x1 LED Signal Descriptions ...................................................................... 19
Unused Pins........................................................................................................ 20
Hardware Configuration Settings ........................................................................ 29
4B/5B Coding ...................................................................................................... 34
BSR Mode of Operation ...................................................................................... 43
Supported JTAG Instructions .............................................................................. 43
Device ID Register .............................................................................................. 43
Magnetics Requirements .................................................................................... 46
Absolute Maximum Ratings ................................................................................ 52
Operating Conditions .......................................................................................... 52
Digital I/O Characteristics 1................................................................................. 52
Digital I/O Characteristics - RMII Pins ................................................................. 53
Required Clock Characteristics........................................................................... 53
100BASE-TX Transceiver Characteristics .......................................................... 53
100BASE-FX Transceiver Characteristics .......................................................... 54
10BASE-T Transceiver Characteristics............................................................... 54
100BASE-TX Receive Timing Parameters ......................................................... 55
100BASE-TX Transmit Timing Parameters ........................................................ 56
100BASE-FX Receive Timing Parameters ......................................................... 56
100BASE-FX Transmit Timing Parameters ........................................................ 57
10BASE-T Receive Timing Parameters.............................................................. 58
10BASE-T Transmit Timing Parameters............................................................. 58
Auto-Negotiation and Fast Link Pulse Timing Parameters ................................. 59
MDIO Timing Parameters ................................................................................... 60
Register Set ........................................................................................................ 62
Register Bit Map.................................................................................................. 63
Control Register (Address 0)............................................................................... 65
Status Register (Address 1) ................................................................................ 65
PHY Identification Register 1 (Address 2)........................................................... 66
PHY Identification Register 2 (Address 3)........................................................... 67
Auto-Negotiation Advertisement Register (Address 4) ....................................... 67
Auto-Negotiation Link Partner Base Page Ability Register (Address 5) .............. 68
Auto-Negotiation Expansion (Address 6) ............................................................ 69
Auto-Negotiation Next Page Transmit Register (Address 7)............................... 69
Auto-Negotiation Link Partner Next Page Receive Register (Address 8) ........... 70
Port Configuration Register (Address 16, Hex 10) .............................................. 70
Quick Status Register (Address 17, Hex 11) ...................................................... 71
Interrupt Enable Register (Address 18, Hex 12) ................................................. 72
Interrupt Status Register (Address 19, Hex 13) .................................................. 73
LED Configuration Register (Address 20, Hex 14) ............................................. 74
Out of Band Signaling Register (Address 25) ..................................................... 75
Transmit Control Register #1 (Address 28)......................................................... 76
Transmit Control Register #2 (Address 30)......................................................... 76
Power-Up Timing Parameters............................................................................ 61
RESET and Power-Down Recovery Timing Parameters ................................... 61
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