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STE100P

Figure 15. 100BaseT Transmit Timing

Table 9.

Parameter

Sym

Min

Typ

Max

Units

TXD, TX_EN, TX_ER Setup to TX_CLK High

t2A

10

-

-

ns

TXD, TX_EN, TX_ER Hold from TX_CLK High

t2B

5

-

-

ns

TX_EN sampled to CRS asserted

t2C

-

30

40

ns

TX_EN sampled to CRS de-asserted

t2D

-

40

160

ns

TX_EN sampled to TXP out (Tx latency)

t2E

60

100

140

ns

BT is the duration of one bit as transferred to and from the MAC and is the reciprocal of the bit rate.

TXP