參數(shù)資料
型號(hào): LXT980QC
英文描述: LAN HUB CONTROLLER
中文描述: 局域網(wǎng)集線器控制器
文件頁(yè)數(shù): 69/96頁(yè)
文件大小: 1309K
代理商: LXT980QC
LXT980/980A Dual-Speed, 5-Port Fast Ethernet Repeater
Datasheet
69
Figure 32. 100BASE-FX Receive Timing - PHY Mode MII
Table 39. 100BASE-FX Receive Timing - PHY Mode MII
Parameter
Sym
t
7A
t
7B
t
7C
Min
Typ
1
Max
Units
2
Test Conditions
FIBIP/N in to CRS asserted
46
BT
FIBIP/N quiet to CRS de-asserted
46
BT
CRS asserted to RXD, RX_DV,
RX_ER
1
4
BT
CRS de-asserted to RXD,
RX_DV, RX_ER de-asserted
t
7D
3
BT
RX_CLK falling edge to RXD,
RX_DV, RX_ER valid
t
7E
t
7F
t
7G
10
ns
FIBIP/N in to COL asserted
46
BT
FIBIP/N quiet to COL de-asserted
46
BT
1. Typical values are at 25
°
C and are for design aid only; not guaranteed and not subject to production testing.
2. Bit Time (BT) is the duration of one bit as transferred to/from the MAC and is the reciprocal of bit rate. BT for 100BASE-T =
10
-8
s or 10 ns.
RX_CLK
RXD,
RX_DV,
RX_ER
CRS
FIBIP/N
COL
t
7A
t
7B
t
7C
t
7D
t
7F
t
7G
t
7E
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