參數(shù)資料
型號: 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
文件頁數(shù): 52/74頁
文件大?。?/td> 1061K
代理商: LXT970A
LXT970A
Dual-Speed Fast Ethernet Transceiver
52
Datasheet
Figure 23. MII - 100BASE-TX Transmit Timing / 4B Mode
Table 32. MII - 100BASE-TX Transmit Timing Parameters / 4B Mode
Parameter
Sym
Min
Typ
1
Max
Units
2
TXD<3:0>, TX_EN, TX_ER Setup to TX_CLK High
t2A
10
ns
TXD<3:0>, TX_EN, TX_ER Hold from TX_CLK High
t2B
5
ns
TX_EN sampled to CRS asserted
t2C
3
4
BT
TX_EN sampled to CRS de-asserted
t2D
4
16
BT
TX_EN sampled to TPO out (Tx latency)
t2E
6
10
14
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
-
s or 10 ns.
t2A
t2B
t2E
t2C
t2D
0ns
250ns
TXCLK
TX_EN
TXD<3:0>
CRS
TPOP
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