TLF11885 – 7

FIGURE 7 ICC Diagram

TLF11885 – 8

FIGURE 8 TX Set and Hold Times

TLF11885 – 9

FIGURE 9 RX Set and Hold Times

TLF11885 – 10

FIGURE 10 Descramble Change Time

TLF11885 – 11

FIGURE 11 ECL Transition Times

TLF11885 – 12

FIGURE 12 Scrambler Data Valid Time

TLF11885 – 13

FIGURE 13 Descrambler Data Valid Time

TABLE II Datastream Encoding Truth Table

PHY Interface

PMD Interface

Mode ENC1 ENC0

(TXD and SCO)

(RXD and DSCO)

Expected Data Format Expected Data Format

1

0

0

NRZI

NRZI

2

0

1

NRZI

NRZ

3

1

0

NRZ

NRZ

41

1

Transparent

Transparent

Transparent mode of operation refers to the ability of the DP83222 to pass a given datastream

through without imposing any scrambling or descrambling on the data

Descrambler)

9