lxt9785 Intel Corporation, lxt9785 Datasheet - Page 6

• Manufacturer Part Number: lxt9785
• Description: Advanced 8-port 10/100 Mbps Phy Transceivers
• Manufacturer: Intel Corporation

Contents
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7.0
8.0
9.0
Figures
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10 Intel
11 Intel
12 Intel
13 Intel
14 Intel
15 Intel
16 Intel
17 Intel
18 Intel
19 Intel
20 Intel
21 Intel
22 Intel
23 Intel
24 Intel
25 Intel
26 Intel
27 Intel
28 Intel
29 Typical IP Telephone System Connection................................................................................ 152
30 Intel
31 Intel
32 Intel
33 LED Circuit ............................................................................................................................... 167
34 Intel
35 Intel
36 Recommended Intel
37 Recommended Intel
38 ON Semiconductor Triple PECL-to-LVPECL Translator .......................................................... 172
5.3
Test Specifications.................................................................................................................... 173
Register Definitions................................................................................................................... 199
Package Specifications............................................................................................................. 221
Ordering Information................................................................................................................. 227
Intel
Intel
Intel
Intel
Intel® LXT9785/LXT9785E 241-Ball BGA23 Assignments (Top View)...................................... 51
Intel
Intel
Intel
Intel
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5.2.5
5.2.6
Typical Application Circuits............................................................................................... 168
LXT9785/LXT9785E Block Diagram ................................................................................. 19
LXT9785 and Intel
LXT9785/LXT9785E SMII 208-Pin PQFP Assignments ................................................... 26
LXT9785/LXT9785E SS-SMII 208-Pin PQFP Assignments ............................................. 31
LXT9785MBC 196-Ball BGA15 Assignments (Top View) ................................................ 98
LXT9785/LXT9785E Interfaces ...................................................................................... 118
LXT9785/LXT9785E Internal Loopback.......................................................................... 120
LXT9785/LXT9785E Management Interface Read Frame Structure.............................. 122
LXT9785/LXT9785E Management Interface Write Frame Structure .............................. 122
LXT9785/LXT9785E Port Address Scheme ................................................................... 123
LXT9785/LXT9785E Interrupt Logic ............................................................................... 124
LXT9785/LXT9785E Initialization Sequence .................................................................. 127
LXT9785/LXT9785E Auto-Negotiation Operation........................................................... 131
LXT9785/LXT9785E Typical SMII Interface Diagram ..................................................... 133
LXT9785/LXT9785E Typical SMII Quad Sectionalization Diagram ................................ 134
LXT9785/LXT9785E 100 Mbps Serial MII Data Flow ..................................................... 135
LXT9785/LXT9785E Serial MII Transmit Synchronization ............................................. 136
LXT9785/LXT9785E Serial MII Receive Synchronization .............................................. 137
LXT9785/LXT9785E Typical SS-SMII Interface Diagram ............................................... 139
LXT9785/LXT9785E Typical SS-SMII Quad Sectionalization Diagram .......................... 140
LXT9785/LXT9785E SS-SMII Transmit Timing .............................................................. 141
LXT9785/LXT9785E SS-SMII Receive Timing ............................................................... 141
LXT9785/LXT9785E RMII Data Flow ............................................................................. 142
LXT9785/LXT9785E Typical RMII Interface Diagram..................................................... 143
LXT9785/LXT9785E Typical RMII Quad Sectionalization Diagram................................ 144
LXT9785/LXT9785E 100BASE-X Frame Format ........................................................... 145
LXT9785/LXT9785E Protocol Sublayers ........................................................................ 146
LXT9785E Negotiation Flow Chart ................................................................................. 156
LXT9785/LXT9785E LED Pulse Stretching .................................................................... 158
LXT9785/LXT9785E RMII Programmable Out-of-Band Signaling.................................. 158
LXT9785/LXT9785E Power and Ground Supply Connections ....................................... 168
LXT9785/LXT9785E Typical Twisted-Pair Interface ....................................................... 169
The Fiber Interface .............................................................................................. 166
LED Circuit........................................................................................................... 167
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LXT9785/LXT9785E-to-3.3 V Fiber Transceiver Interface Circuitry ...... 170
LXT9785/LXT9785E-to-5 V Fiber Transceiver Interface Circuitry ......... 171
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LXT9785E RMII 208-Pin PQFP Assignments .................................. 21
Revision Date: August 28, 2003
Document Number: 249241
Revision Number: 007
Datasheet