参数资料
型号: WJLXT971ALC.A4SE001
厂商: CORTINA SYSTEMS INC
元件分类: 网络接口
英文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP64
封装: LEAD FREE, LQFP-64
文件页数: 80/116页
文件大小: 1172K
代理商: WJLXT971ALC.A4SE001
LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver
66
Datasheet
Document #: 249414
Revision #: 002
Rev. Date: August 7, 2002
Figure 33. 10BASE-T Transmit Timing
Table 34. 10BASE-T Transmit Timing Parameters
Parameter
Symbol
Min
Typ1
Max
Units2
Test Conditions
TXD, TX_EN, TX_ER setup to
TX_CLK High
t1
10
ns
TXD, TX_EN, TX_ER hold from
TX_CLK High
t2
0
ns
TX_EN sampled to CRS asserted
t3
2
BT
TX_EN sampled to CRS de-asserted
t4
1
BT
TX_EN sampled to TPFO out (Tx
latency)
t5
72.5
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.
10BASE-T bit time = 10-7 s or 100 ns.
TX_CLK
TXD,
TX_EN,
TX_ER
CRS
TPFO
t1
t3
t4
t5
t2
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