参数资料
型号: WJLXT972ALC.A4
厂商: INTEL CORP
元件分类: 网络接口
英文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP64
封装: ROHS COMPLIANT, LQFP-64
文件页数: 69/97页
文件大小: 1281K
代理商: WJLXT972ALC.A4
Intel
LXT972A Single-Port 10/100 Mbps PHY Transceiver
Datasheet
71
Document Number: 249186-004
Revision Date: 25-Oct-2005
Figure 26. Intel LXT972A Transceiver 10BASE-T Transmit Timing
Table 33. Intel
LXT972A Transceiver 10BASE-T Transmit Timing Parameters
Parameter
Symbol
Min
Typ
1
Max
Units
2
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 TPO 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 (Bit Time) 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
TPO
t1
t3
t4
t5
t2
B3460-01
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