參數(shù)資料
型號(hào): LXT970A
廠商: Intel Corp.
英文描述: Dual-Speed Fast Ethernet Transceiver
中文描述: 雙速度快速以太網(wǎng)收發(fā)器
文件頁(yè)數(shù): 51/74頁(yè)
文件大小: 1061K
代理商: LXT970A
Dual-Speed Fast Ethernet Transceiver
LXT970A
Datasheet
51
Figure 22. MII - 100BASE-TX Receive Timing / 4B Mode
Table 31. MII - 100BASE-TX Receive Timing Parameters / 4B Mode
Parameter
Sym
Min
Typ
1
Max
Units
3
RXD, RX_DV, RX_ER Setup to RX_CLK High
t1A
10
ns
RXD, RX_DV, RX_ER Hold from RX_CLK High
t1B
10
ns
CRS asserted to RXD<3:0>, RX_DV asserted
t1C
8
BT
Receive start of
J
to CRS asserted
t1D
0
15 - 19
20
BT
Receive start of
T
to CRS de-asserted
t1E
13
23 - 27
28
BT
Receive start of
J
to COL asserted
t1F
0
15 - 19
20
BT
Receive start of
T
to COL de-asserted
t1G
13
23 - 27
28
BT
TRSTE asserted to RX_DV, RXD<3:0> driven
2
t1H
20
ns
1. Typical values are at 25
°
C and are for design aid only; not guaranteed and not subject to production testing.
2. These parameters apply only when the device is operated in Repeater Mode.
3. 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
-
s or 10 ns.
t1D
t1E
t1C
t1F
t1G
0ns
250ns
CRS
TRSTE
1
RX_DV
RXD<3:0>
RX_CLK
COL
t1A
t1B
TPIP
t1H
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