May 1997

ML6694

*

100BASE-TX Physical Layer with 5-Bit Interface

1

GENERAL DESCRIPTION

The ML6694 is a high-speed physical layer transceiver

that provides a 5-bit (or symbol) interface to unshielded

twisted pair cable media. The ML6694 is well suited for

repeater applications using repeater controllers with the

5-bit interface. The ML6694 may also be used in FDDI-

over-copper applications.

The ML6694 integrates 125MHz clock recovery/

generation, receive adaptive equalization, baseline

wander correction and MLT-3/10BASE-T transmitter.

FEATURES

s

5-bit (or symbol) parallel interface

s

Compliant to IEEE 802.3u 100BASE-TX standard

s

Compliant to ANSI X3T12 TP-PMD (FDDI) standard

s

Single-jack 10BASE-T/100BASE-TX solution when used

with external 10Mbps PHY

s

125MHz receive clock recovery/generation

s

Baseline wander correction

s

Adaptive equalization and MLT-3 encoding/decoding

s

Supports full-duplex operation

* Some Packages Are End Of Life As Of August 1, 2000

TXC

TPOUTP

TPOUTN

NRZ TO NRZI

AND

NRZI TO MLT-3

ENCODER

CLOCK AND DATA

RECOVERY

NRZI TO NRZ DECODER

RTSET

TSM4

TSM3

TSM2

TPINP

TPINN

CMREF

RGMSET

SDO

TSM1

TSM0

RXC

RSM4

RSM3

RSM2

RSM1

RSM0

CLOCK SYTHESIZER

CONTROL LOGIC

EQUALIZER

BLW CORRECTION

MLT-3 DECODER

LOOPBACK MUX

SERIALIZER

DESERIALIZER

100BASE-TX/10BASE-T

TWISTED PAIR DRIVER

44

41

40

34

33

31

38

37

39

30

24

7

42

25

2

3

4

5

6

16

8

9

11

13

15