DM9000B Просмотр технического описания (PDF) - Davicom Semiconductor, Inc.
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DM9000B Datasheet PDF : 56 Pages
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DM9000B
Ethernet Controller with General Processor Interface
9.11.1 Power down Mode ............................................................................................................................. 43
9.11.2 Reduced Transmit Power Mode......................................................................................................... 43
10. DC and AC Electrical Characteristics .......................................................................... 44
10.1 Absolute Maximum Ratings ( 25°C ) ......................................................................................................... 44
10.1.1 Operating Conditions ......................................................................................................................... 44
10.2 DC Electrical Characteristics (VDD = 3.3V).............................................................................................. 44
10.3 AC Electrical Characteristics & Timing Waveforms .................................................................................. 45
10.3.1 TP Interface ....................................................................................................................................... 45
10.3.2 Oscillator/Crystal Timing .................................................................................................................... 45
10.3.3 Power On Reset Timing..................................................................................................................... 45
10.3.4 Processor I/O Read Timing................................................................................................................ 46
10.3.5 Processor I/O Write Timing................................................................................................................ 47
10.3.6 EEPROM Interface Timing................................................................................................................. 48
11. Application Notes........................................................................................................... 49
11.1 Network Interface Signal Routing.............................................................................................................. 49
11.2 10Base-T/100Base-TX Auto MDIX Application ......................................................................................... 49
11.3 10Base-T/100Base-TX ( Non Auto MDIX Transformer Application ) ........................................................ 50
11.4 Power Decoupling Capacitors ................................................................................................................... 51
11.5 Ground Plane Layout ................................................................................................................................ 52
11.6 Power Plane Partitioning ........................................................................................................................... 53
11.7 Magnetic Selection Guide ......................................................................................................................... 54
11.8 Crystal Selection Guide ............................................................................................................................. 54
12. Package Information ..................................................................................................... 55
13. Ordering Information..................................................................................................... 56
Final
5
Version: DM9000B-13-DS-F02
June 4, 2009
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