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LXT971ABC 데이터시트(PDF) 62 Page - Intel Corporation

부품명 LXT971ABC
상세설명  3.3V Dual-Speed Fast Ethernet PHY Transceiver
PDF  90 Pages
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제조업체  INTEL [Intel Corporation]
홈페이지  http://www.intel.com
Logo INTEL - Intel Corporation

LXT971ABC 데이터시트(HTML) 62 Page - Intel Corporation

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LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver
62
Datasheet
Document #: 249414
Revision #: 002
Rev. Date: August 7, 2002
Figure 29. 100BASE-TX Transmit Timing - 4B Mode
Table 30. 100BASE-TX Transmit Timing Parameters - 4B Mode
Parameter
Symbol
Min
Typ1
Max
Units2
Test Conditions
TXD<3:0>, TX_EN, TX_ER setup to
TX_CLK High
t1
12
–
–
ns
–
TXD<3:0>, TX_EN, TX_ER hold from
TX_CLK High
t2
0
–
–
ns
–
TX_EN sampled to CRS asserted
t3
20
–
24
BT
–
TX_EN sampled to CRS de-asserted
t4
24
–
28
BT
–
TX_EN sampled to TPFO out (Tx
latency)
t5
5.3
–
5.7
BT
–
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production
testing.
2. BT is the duration of one bit as transferred to and from the MAC and is the reciprocal of the bit rate.
100BASE-T bit time = 10-8 s or 10 ns.
t1
t2
t5
t3
t4
0ns
250ns
TXCLK
TX_EN
TXD<3:0>
TPFO
CRS



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