Instruction Manual

DS33R11 Ethernet Mapper with Integrated T1/E1/J1 Transceiver

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13.2 MII Interface

Table 13-5. Transmit MII Interface

(Note 1, Figure 13-1)

10Mbps 100Mbps

PARAMETER SYMBOL

MIN TYP MAX MIN TYP MAX

UNITS

TX_CLK Period t1 400 40 ns

TX_CLK Low Time t2 140 260 14 26 ns

TX_CLK High Time t3 140 260 14 26 ns

TX_CLK to TXD, TX_EN Delay t4 0 20 0 20 ns

Note 1: Timing parameters in this table are guaranteed by design (GBD).

Figure 13-1. Transmit MII Interface Timing

TX_CLK

TXD[3:0]

TX_EN