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DM9000 Datasheet(PDF) 39 Page - Davicom Semiconductor, Inc.

Part # DM9000
Description  ISA to Ethernet MAC Controller with Integrated 10/100 PHY
PDF  53 Pages
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Manufacturer  DAVICOM [Davicom Semiconductor, Inc.]
Direct Link  http://www.davicom.com.tw
Logo DAVICOM - Davicom Semiconductor, Inc.

DM9000 Datasheet(HTML) 39 Page - Davicom Semiconductor, Inc.

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DM9000
ISA to Ethernet MAC Controller with Integrated 10/100 PHY
Final
39
Version: DM9000-DS-F03
April 23, 2009
10.4 AC Electrical Characteristics & Timing Waveforms
10.4.1 TP Interface
Symbol
Parameter
Min.
Typ.
Max.
Unit
Conditions
tTR/F
100TX+/- Differential Rise/Fall Time
3.0
-
5.0
ns
tTM
100TX+/- Differential Rise/Fall Time
Mismatch
0
-
0.5
ns
tTDC
100TX+/- Differential Output Duty Cycle
Distortion
0
-
0.5
ns
tT/T
100TX+/- Differential Output Peak-to-Peak
Jitter
0
-
1.4
ns
XOST
100TX+/- Differential Voltage Overshoot
0
-
5
%
10.4.2 Oscillator/Crystal Timing
Symbol
Parameter
Min.
Typ.
Max.
Unit
Conditions
tCKC
TCKC
39.998
40
40.002
ns
50ppm
tPWH
TCKC
16
20
24
ns
tPWL
OSC Pulse Width Low
16
20
24
ns
10.4.3 Processor Register Read Timing
Symbol
Parameter
Min.
Typ.
Max.
Unit
T1
System address valid to IOR valid
5
ns
T2
IOR width
22
ns
T3
SD Setup time
10
ns
T4
IOR invalid to SD invalid
4
ns
T5
IOR invalid to system address invalid
5
ns
T6
IOR invalid to next IOR valid （access DM9000）
80
ns
T7
System address valid to IO16,IO32 valid
5
ns
T8
System address invalid to IO16, IO32 invalid
5
ns
T5
T1
IOR
SD
→←
←
→
→
←
←
→
→
T4
T3
→
←
←
AEN,SA
IO16,IO32
Note 1.2
T8
←
→
T7
←
→
T2
T6
,CMD



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