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ML6692CH Datasheet

  • ML6692CH

  • 100BASE-TX Physical Layer with MII

  • 21頁

  • MICRO-LINEAR

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April 1999
ML6692
100BASE-TX Physical Layer with MII
GENERAL DESCRIPTION
The ML6692 implements the complete physical layer of
the Fast Ethernet 100BASE-TX standard. The ML6692
interfaces to the controller through the standard-compliant
Media Independent Interface (MII). The ML6692
functionality includes auto-negotiation, 4B/5B encoding/
decoding, Stream Cipher scrambling/descrambling,
125MHz clock recovery/generation, receive adaptive
equalization, baseline wander correction, and MLT-3/
10BASE-T transmitter.
For applications requiring 100Mbps only, such as
repeaters, the ML6692 offers a single-chip per-port
solution. For 10/100 dual speed adapters or switchers,
10BASE-T functionality may be attained using Micro
Linear鈥檚 ML2653, or by using an Ethernet controller that
contains an integrated 10BASE-T PHY.
FEATURES
s
s
s
s
Single-chip 100BASE-TX physical layer
Compliant to IEEE 802.3u 100BASE-TX standard
Supports adapter, repeater and switch applications
Single-jack 10BASE-T/100BASE-TX solution when used
with external 10Mbps PHY
Compliant MII (Media Independant Interface)
Auto-negotiation capability
4B/5B encoder/decoder
Stream Cipher scrambler/descrambler
125MHz clock recovery/generation
Baseline wander correction
Adaptive equalization and MLT-3 encoding/decoding
Supports full-duplex operation
s
s
s
s
s
s
s
s
BLOCK DIAGRAM
1
9
(PLCC Package)
49
48
CLOCK SYNTHESIZER
TXCLK
3
4
5
6
7
8
18
19
17
10
12
14
16
21
23
24
25
TXD3
TXD2
TXD1
TXD0
TXEN
TXER
CRS
COL
RXCLK
RXD3
RXD2
RXD1
PCS TRANSMIT
STATE MACHINE
4B/5B ENCODER
SCRAMBLER
NRZ TO NRZI ENCODER
SERIALIZER
MLT-3 ENCODER
FLP/100BASE-TX/10BASE-T
TWISTED PAIR DRIVER
10BTTXINP
TXCLKIN
10BTTXINN
TPOUTP
TPOUTN
RTSET
40
39
37
CARRIER AND
COLLISION LOGIC
CLOCK AND DATA
RECOVERY
NRZI TO NRZ DECODER
DESERIALIZER
EQUALIZER
BLW CORRECTION
MLT-3 DECODER
LOOPBACK MUX
TPINP
TPINN
CMREF
RGMSET
LINK100
45
44
46
36
43
PCS RECEIVE
STATE MACHINE
5B/4B DECODER
RXD0
RXDV
RXER
DESCRAMBLER
AUTO-NEGOTIATION
AND CONTROL LOGIC
10BTLNKEN
INITIALIZATION
REGISTER
10BTRCV
MDIO
T4FAIL
MII MANAGEMENT
REGISTERS
29
30
50
51
SEL10HD
T4EN
EDIN
MDC
47
31
32
33
SEL10FD
/ECLK
35
SEL100T4
/EDOUT
DUPLEX
1

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