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TNETX4090GGP 数据表(PDF) 65 Page - Texas Instruments

部件名 TNETX4090GGP
功能描述  ThunderSWITCH IIE 9-PORT 100-/1000-MBIT/S ETHERNETE SWITCH
PDF  78 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

TNETX4090GGP 数据表(HTML) 65 Page - Texas Instruments

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TNETX4090
ThunderSWITCH II™ 9-PORT 100-/1000-MBIT/S ETHERNET™ SWITCH
SPWS044E – DECEMBER 1997 – REVISED AUGUST 1999
65
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
PMA and GMII clock (see Figure 20)
NO.
MIN
MAX
UNIT
1
tr(Mxx_GCLK)
Pulse width low, Mxx_RFCLK
2.5
ns
2
th(Mxx_GCLK)
Pulse width high, Mxx_RFCLK
2.5
ns
3
tw(Mxx_GCLK)
Cycle time, Mxx_RFCLK
8
ns
PMA and GMII clock (see Figure 20)
NO.
MIN
MAX
UNIT
1
tr(Mxx_GCLK) Rise time, Mxx_RFCLK
1
ns
2
tf(Mxx_GCLK) Fall time, Mxx_RFCLK
1
ns
3
Accuracy
100
PPM
duty cycle
40%
60%
† tr and tf are measured between 20% and 80%, VDD(3.3-V) = min, output load (GTCLK) = 20pf.
Mxx_RFCLK
1
2
3
Figure 20. GMII Clock



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