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TNETX4090 数据表(PDF) 63 Page - Texas Instruments

部件名 TNETX4090
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

TNETX4090 数据表(HTML) 63 Page - Texas Instruments

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TNETX4090
ThunderSWITCH II™ 9-PORT 100-/1000-MBIT/S ETHERNET™ SWITCH
SPWS044E – DECEMBER 1997 – REVISED AUGUST 1999
63
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
transmit
PMA transmit (see Figure 17)
NO.
MIN
MAX
UNIT
1
tc(Mxx_GTCLK)
Cycle time, Mxx_GTCLK
8†
8†
ns
2,3
tw(Mxx_GTCLK)
Pulse duration, Mxx_GTCLK low or high
40%
60%
tc(Mxx_GTCLK)
4
tsu(Mxx_TXD)
Setup time, Mxx_RXD7–Mxx_RXD0 valid before Mxx_GTCLK
↑
2
ns
4
tsu(Mxx_TXEN)
Setup time, Mxx_RXDV valid before Mxx_GTCLK
↑
2
ns
4
tsu(Mxx_TXER)
Setup time, Mxx_RXER valid before Mxx_GTCLK
↑
2
ns
5
th(Mxx_TXD)
Hold time, Mxx_RXD7–Mxx_RXD0 valid after Mxx_GTCLK
↑
1
ns
5
th(Mxx_TXDV)
Hold time, Mxx_RXDV valid after Mxx_GTCLK
↑
1
ns
5
th(Mxx_TXER)
Hold time, Mxx_RXER valid after Mxx_GTCLK
↑
1
ns
†
±100-ppm tolerance
Transmit
Clock
Transmit
Code Group
1
3
5
4
2
Figure 17. PMA Transmit



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