DM9000A
Ethernet Controller with General Processor Interface
Preliminary datasheet
5
Version: DM9000A-DS-P03
Apr. 21, 2005
10.1.1 Operating Conditions………………………………………………………………………………..………..…45
10.2 DC Electrical Characteristics (VDD = 3.3V)……………………………….…………………………..…………45
10.3 AC Electrical Characteristics & Timing Waveform……………………………………………………..…..……46
10.3.1 TP Interface…………………………………………………………………………………………..…………46
10.3.2 Oscillator/Crystal Timing……………………………………………………………………………….………46
10.3.3 Processor Register Read Timing…………………………………………………………………….….………46
10.3.4 Processor Register Write Timing………………………………………………………………….…….………47
10.3.5 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 Application)…………………………………………….…..…………50
11.4 Power Decoupling Capacitors…………………………………………………………..…………….……………51
11.5 Ground Plane Layout………………………………………………………………………………….……………52
11.6 Power Plane Partitioning……………………………………………………………………………………………53
11.7 Magnetics Selection Guide………………………………………………………………………………….………54
11.8 Crystal Selection Guide…………………………………………………………………………..…………………54
12. Package Information………………………………………………………………………….……………..55
13. Ordering Information………………………………………………………………………….……….……56