ML4663CQ Micro Linear, ML4663CQ Datasheet

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ML4663CQ

Manufacturer Part Number
ML4663CQ
Description
Single chip 10BASE-FL transceiver
Manufacturer
Micro Linear
Datasheet

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GENERAL DESCRIPTION
The ML4663 single-chip 10BASE-FL transceiver integrates
both a ML4662 10BASE-FL transceiver with a ML4622
fiber optic data quantizer to implement a highly integrated
solution for 10BASE-FL transceivers. The ML4663 offers a
standard IEEE 802.3 AU interface that allows it to be
directly connected to industry standard manchester
encoder/decoder chips or an AUI connector.
The ML4663 provides a highly integrated solution that
requires a minimal number of external components, and is
compliant to the IEEE 802.3 10BASE-FL standard. The
transmitter offers a current drive output that directly drives
a fiber optic LED transmitter. The receiver offers a highly
stable fiber optic data quantizer capable of accepting
input signals as low as 2mV
range.
The transmitter automatically inserts 1MHz signal during
idle time and removes this signal on reception. Low Light
is continuously monitored for both activity as well as
power level. Five LED status indicators monitor error
conditions as well as transmissions, receptions and
collisions.
BLOCK DIAGRAM
COL+
COL–
Rx+
Tx+
Rx–
Tx–
10
11
2
3
6
7
GND
19
SQUELCH
RECEIVER
DRIVER
DRIVER
P-P
AUI
AUI
AUI
Tx
(+5V)
with a 55dB dynamic
V
SQEN/JABD
CC
9
5
13
+5V
RRSET
10MHz GATED
OSCILLATOR
LOOPBACK
1MHz IDLE
SIGNAL
LBDIS
MUX
SQE
Single Chip 10BASE-FL Transceiver
8
Tx
Rx
AGND
FEATURES
24
Single chip solution for 10BASE-FL internal or external
Medium Attachment Units (MAUs)
Incorporates an AU interface
Highly stable data quantizer with 55dB input
dynamic range
Input sensitivity as low as 2mV
Current driven fiber optic LED driver for accurate
launch power
Single +5 volt supply
No crystal or clock required
Five network status LED outputs
CMP
V
(+5V)
CC
17
Tx
RECEIVE SQUELCH
FIBER OPTIC
DRIVER
JABBER
LED
LINK DETECT
RTSET
C
TIMER
4
12
AMP
+5V
GND
20
DRIVERS
LED
V
REF
P-P
BIAS
AV
27
CC
ML4663
18
15
16
28
14
26
25
21
22
23
1
TxOUT
XMT
RCV
CLSN
JAB
LMON
V
V
V
V
V
IN
IN
DC
REF
THADJ
+
March 1997
1

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ML4663CQ Summary of contents

Page 1

GENERAL DESCRIPTION The ML4663 single-chip 10BASE-FL transceiver integrates both a ML4662 10BASE-FL transceiver with a ML4622 fiber optic data quantizer to implement a highly integrated solution for 10BASE-FL transceivers. The ML4663 offers a standard IEEE 802.3 AU interface that allows ...

Page 2

ML4663 PIN CONNECTION SQEN/JABD 2 ML4663 28-Pin PLCC (Q28 Rx Rx– LBDIS Tx Tx– ...

Page 3

PIN DESCRIPTION PIN NAME FUNCTION CLSN 1 Indicates that a collision is taking place. Active low LED driver, open collector. Event is extended with internal timer for visibility. 2 COL+ Gated 10MHz oscillation used to 3 COL– indicate a collision, ...

Page 4

ML4663 ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are limits beyond which the life of the integrated circuit may be impaired. All voltages unless otherwise specified are measured with respect to ground. Power Supply Voltage Range V CC ................................................................... Input Voltage ...

Page 5

ELECTRICAL CHARACTERISTICS Unless otherwise specified Operations Temperature Range SYMBOL PARAMETER V External Voltage at V THADJ THADJ to Set Input Offset OFF V Input Referred Noise N R Input Resistance IN I Input ...

Page 6

ML4663 AC ELECTRICAL CHARACTERISTICS SYMBOL Collision t Collision Present to SQE Assert CPSQE t Time for SQE to Deactivate After Collision SQEXR F Collision Frequency CLF P Collision Pulse Duty Cycle CLPDC t SQE Test Delay (Tx Inactive to SQE) ...

Page 7

HP HFBR1414 OR OPTEK OPC1414 Figure 1. ML4663 Schematic Diagram ML4663 7 ...

Page 8

ML4663 SYSTEM DESCRIPTION Figure 1 shows a schematic diagram of the ML4663 in an internal or external 10BASE-FL MAU. On one side of the transceiver is the AU interface and the other is the fiber optic interface. The AU interface ...

Page 9

V CC RTSET = 560 OUT TxOUT Figure 3. Converting Optical LED Driver Output to Differential ECL. RECEPTION The input to the transceiver comes from a fiber optic receiver (Figure 1). At the ...

Page 10

ML4663 Since the amplifier has a differential input, two capacitors of equal value are required. If the signal driving the input is single ended, one of the coupling capacitors can be tied to AV (Figure 1). CC The internal amplifier ...

Page 11

TIMING DIAGRAMS t TXNPW Tx+ VALID DATA Tx– t TXODY IDLE TxOUT t TXLP Rx+ Rx– – ROXDY Rx+ Rx– Tx+ Tx– – IN COL+ COL– Rx+ Tx Rx– t ...

Page 12

ML4663 TIMING DIAGRAMS – IN Tx+ Tx– t COL+ COL– – IN Tx+ VALID Tx– t SQEXR COL+ CS0 COL– Rx Rx– Tx+ Tx– VALID V – ...

Page 13

TIMING DIAGRAMS COL+ COL– Tx+ Tx– COL+ COL– Tx+ Tx – TxOUT COL+ COL– Tx+ Tx– XMT 1 F CLF Figure 12. Collision Timing VALID DATA t SQEDY Figure 13. SQE Timing VALID DATA t t JAD VALID DATA t ...

Page 14

ML4663 TIMING DIAGRAMS – IN RCV – IN LMON 14 t LED Figure 16. LED Timing t t LLPH LLCL Figure 17. LED Timing ...

Page 15

... ORDERING INFORMATION PART NUMBER ML4663CQ © Micro Linear 1997 is a registered trademark of Micro Linear Corporation Products described in this document may be covered by one or more of the following patents, U.S.: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483; 5,418,502; 5,508,570; 5,510,727; 5,523,940; 5,546,017; 5,559,470; 5,565,761; 5,592,128; 5,594,376; Japan: 2598946. Other patents are pending. ...

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