DM9000A Просмотр технического описания (PDF) - Davicom Semiconductor, Inc.
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DM9000A Datasheet PDF : 60 Pages
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DM9000A
Ethernet Controller with General Processor Interface
9.11.2 Reduced Transmit Power Mode ......................................................................................................................... 47
10. DC and AC Electrical Characteristics .......................................................................................................................... 48
10.1 Absolute Maximum Ratings ( 25°C ).......................................................................................................................... 48
10.1.1 Operating Conditions ......................................................................................................................................... 48
10.2 DC Electrical Characteristics (VDD = 3.3V)............................................................................................................ 48
10.3 AC Electrical Characteristics & Timing Waveforms.................................................................................................. 49
10.3.1 TP Interface ........................................................................................................................................................ 49
10.3.2 Oscillator/Crystal Timing................................................................................................................................... 49
10.3.3 Processor I/O Read Timing ................................................................................................................................ 49
10.3.4 Processor I/O Write Timing ............................................................................................................................... 50
10.3.5 EEPROM Interface Timing................................................................................................................................ 51
11. Application Notes ............................................................................................................................................................ 52
11.1 Network Interface Signal Routing .............................................................................................................................. 52
11.2 10Base-T/100Base-TX Auto MDIX Application......................................................................................................... 52
11.3 10Base-T/100Base-TX ( Non Auto MDIX Transformer Application )........................................................................ 53
11.4 Power Decoupling Capacitors ................................................................................................................................... 54
11.5 Ground Plane Layout ................................................................................................................................................. 55
11.6 Power Plane Partitioning .......................................................................................................................................... 56
11.7 Magnetics Selection Guide......................................................................................................................................... 57
11.8 Crystal Selection Guide.............................................................................................................................................. 57
12. Package Information ...................................................................................................................................................... 58
13. Ordering Information .................................................................................................................................................... 59
Final
5
Version: DM9000A-17-DS-F01
May 10, 2006
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