参数资料
型号: WJLXT971ALE.A4SE000
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: 77/116页
文件大小: 1172K
代理商: WJLXT971ALE.A4SE000
LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver
Datasheet
63
Document #: 249414
Revision #: 002
Rev. Date: August 7, 2002
Figure 30. 100BASE-FX Receive Timing
Table 31. 100BASE-FX Receive Timing Parameters
Parameter
Sym
Min
Typ1
Max
Units2
Test Conditions
RXD<3:0>, RX_DV, RX_ER setup
to RX_CLK High
t1
10
ns
RXD<3:0>, RX_DV, RX_ER hold
from RX_CLK High
t2
10
ns
CRS asserted to RXD<3:0>, RX_DV
t3
3
5
BT
Receive start of “J” to CRS asserted
t4
12
16
BT
Receive start of “T” to CRS de-asserted
t5
16
22
BT
Receive start of “J” to COL asserted
t6
10
15
BT
Receive start of “T” to COL de-asserted
t7
14
18
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.
t4
t5
t3
t6
t7
0ns
250ns
CRS
RX_DV
RXD<3:0>
RX_CLK
COL
t1
t2
TPFI
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