Port Cascadeable 100base ARepeater AB-1205-5 4-Port 100baseTX Rep
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AB-1205-5
Port Cascadeable 100base ARepeater
AB-1205-5 4-Port 100baseTX Repeater
Semicon AB1205-5 100base ARepeater
Copyright Copyright 1997 Semicon Limited. rights reserved. part this publication reproduced, transmitted, transcribed, stored retrieval system, translated into language computer language, form third party, without prior written permission Semicon Limited.
Disclaimer Semicon Limited reserves right revise this publication make changes from time time contents hereof without obligation notify person organization such revision changes. Semicon Limited endeavoured ensure that information this publication correct, will accept liability error omission.
AB-1205-5
100base Port Repeater
Features: ports AMD's FDDI chip sets GECs NWK914 Local bi-directional high-speed daisychaining Compatible with 100base Compatible with 100base PQFP package Power C-Mos Technology 0.8micron
INTRODUCTION This repeater chip allows connection 79865 79866 chipset together with DP83223 Physical Layer chip well being able Semicon AB10100PHY which replace National chip giving maximum flexibility. process ports simultaneously half duplex. encryption decryption circuit built into each channels. local allows daisychaining number devices. Chip Structure chip contains four high-speed 5bit channels control logic physical layer interface. Each channel encryption decryption circuit circuit simplicity reduced EMI. Error arbitration logic collision detection which also available output pins chip which capable driving LEDs directly. There additional outputs indicate data.
Global Reset Packet Management Logic Timers
Idle Detect
Daisychain
control In/Out
Output
RX-1 Input RX-2 Input RX-3 Input RX-4 Input Cypherstream Decryption Cypherstream Decryption Cypherstream Decryption Cypherstream Decryption Ring Buffer Ring Buffer Ring Buffer Ring Buffer Priority Packet Switch Logic Idle Byte Insertion Active Channel
Cypherstream Encryption Cypherstream Encryption Cypherstream Encryption Cypherstream Encryption
TX-1 Output TX-2 Output TX-3 Output TX-4 Output Daisychain In/Output
Note:
Daisychain Control Data only functional AB-1205-5
Figure Functional Block Diagram
APPLICATIONS chip used many different applications where random encryption decryption required achieve semi spread spectrum copper wire reduce emitted from cable. most powerful repeater devices such port multiple ports, devices. Such applications include 100baseTX repeaters. Figure gives overview cost repeater applications which this chip suitable. Such repeater used Workgroup Serverbased environments. data fully transparently distributed through Network. 100baseTX Repeater
100baseTX Fileserver
100baseTX LaserPrinter
100baseTX Workstation
Figure
EXAMPLE Port Repeater Figure shows port repeater with extension connector daisychain number port repeaters.
79865
XTAL
AB-1205-1
AB-1205-5
4-Port Repeater
daisychain connector (AB-1205-5 only)
79866
83223
magnetics magnetics
connector
connector
connector
connector
Figure
Interconnection AB1205-5 AB10100PHY Physical Layer diagram below shows signals between AB1205-5 AB10100PHY interconnected single port. This interconnection repeated remaining ports, please also refer AB10100PHY Product Specification.
Xial Osc.
100pF
.033mF 620W
TXVCC 0.1mF
LFTA
1205-5
(with embedded PCS)
REFCLK TDAT0-4
LFT8 TXREF TXGND TXOP
RDAT0-4 LFRA
10/100
LFR8
TXON
RXIP RXIN
RJ45
0.1mF 6.2KW
Connection AB10/100PHY AB1205-5
Clock Distribution Circuit following diagram shows clock distributed. assure that clock arriving same time channels, used re-shape clock signal each channel.
AB1205-5
LSCLK
LNKOK2 RSCLK2
25MHz 100nF
RSCLK2
Shield power ground
AB10100
LNKOK2
RX2IN0 RX2IN1 RX2IN2 RX2IN3 RX2IN4 TX2OUT4 TX2OUT3
RX2IN0 RX2IN1 RX2IN2 RX2IN3 RX2IN4 TX2OUT4 TX2OUT3
AB1205-5
N(0.4)
OUT0 OUT1 OUT2
TX2IN(0.4)
Diagram showing clock distribution Note: When daisychaining AB1205-5 remaining buffers used re-generate clock signal.
RX2IN(0.4)
TX2IN(0.4)
LSCLK
Reset circuitry AB-1205-5 following diagram shows reset circuit AB-1205-5 four port cascadeable chip.
RESET AB-1205-5
Reset Circuit AB-1205-5
other devices
DISAB(1) Collision Relay AB-1205-5 AS244/2 OSC~ 25Mhz RX_BUSY_0 DAISY<4> DAISY<3> DAISY<2> DAISY<1> DAISY<0>
AS244/1 AB-1205-5
Daisychaining AB-1205-5
Thermal Characteristics AB1205-5 This device supplied plastic Quad Flat Pack with count this configuration, thermal resistance Junction-to-Ambient Measurement) °C/W Alloy Lead Frame with value °C/W Copper Lead Frame. this device currently supplied Alloy Lead Frame, only that figure been used following calculations. Power Dissipation (Pd) device calculated follows: Thus Power Dissipation Watts ambient following plot shows variation Power Dissipation with ambient: Power Dissipation AB1205-5 typical 300mW
Maximum ambient temperature
value used. range
AB1205-5 typical
Recommended area operation
Packaging information
Number Pins
Number Pins
MIN. 2.82 0.25 2.57 23.00 19.90 17.00 13.90 0.65 0.25
LEAD NOM. 3.07 0.35 2.72 23.20 20.00 17.20 14.00 0.75 0.80 0.35 MAX. 3.32 0.45 23.40 20.10 17.40 14.10 0.95 0.45
Assignment
Signal
Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output Input Input Input Input
Designator
Ground
TX3_OUT3 TX3_OUT4 TX4_OUT0 Power TX4_OUT1 TX4_OUT2 TX4_OUT3 TX4_OUT4 -LINK4-(LED) -LED3-(LED) -LINK2-(LED) -LINK1-(LED) -REC4-(LED) -REC3-(LED) -REC2-(LED) Ground -REC1-(LED) LINKOK1 RSCLK1 Power RX1_IN0 RX1_IN1
Assignment
Signal
Input Input Input Input Input Input Input Input Input Input Input Input Input Input Input Input Input Input GNDc Input Input Input Input
Designator
RX1_IN2 RX1_IN3 RX1_IN4 LINKOK2 RSCLK2 RX2_IN0 RX2_IN1 RX2_IN2 RX2_IN3 RX2_IN4 -LINKOK3-RSCLK3RX3IN0 RX3IN1 RX3IN2 RX3IN3 Power (Core) Ground RX3IN4 -LINKOK4Ground (Core) RSCLK4 RX4_IN0 RX4_IN1 RX4_IN2
Assignment
Signal
Input Input Input Input Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Output Output Output Output Output Output Output Output
Designator
RX4_IN3 RX4_IN4 -RESETLSCLK -DISAB1-(Col) RX_BUSY_0 Power Ground DAISY DAISY Power DAISY DAISY DAISY Ground TX1_OUT0 TX1_OUT1 TX1_OUT2 TX1_OUT3 TX1_OUT4 TX2_OUT0 TX2_OUT1 Power TX2_OUT2
Assignment
Signal Output Output Output Output Output Designator TX2_OUT3 TX2_OUT4 TX3_OUT0 TX3_OUT1 TX3_OUT2
Clock Pcolrx inactive collided packet
/dataen /dataen /dataen /dataen /Prxbsy /Pcolrx /Pcol
1>,/Ptxdat<0>
/Plsclk Time
Clock Pcolrx Pcol active when collision occurs
/dataen /dataen /dataen /dataen /Prxbsy /Pcolrx /Pcol
1>,/Ptxdat<0>
/Plsclk Time
Clock Prxbsy high byway data disable packet
/dataen /dataen /dataen /dataen /Prxbsy /Pcolrx /Pcol
1>,/Ptxdat<0>
/Plsclk Time
Clock Prxbsy data enable beginning packet
/dataen /dataen /dataen /dataen /Prxbsy /Pcolrx /Pcol
1>,/Ptxdat<0>
/Plsclk Time
Clocking byway data
/dataen /dataen /dataen /dataen /Prxbsy /Pcolrx /Pcol
1>,/Ptxdat<0>
/Plsclk Time
Beginning packet channel starts transmission)
/dataen /dataen /dataen /dataen /Prxbsy /Pcolrx /Pcol
1>,/Ptxdat<0>
/Plsclk Time
packet channel ends transmission)
/dataen /dataen /dataen /dataen /Prxbsy /Pcolrx /Pcol
X1BX1C X01X02X03 04X05X06X1F
1>,/Ptxdat<0>
/Plsclk Time
Beginning collision (two channels transmit simultaneously)
/dataen /dataen /dataen /dataen /Prxbsy /Pcolrx /Pcol
1>,/Ptxdat<0>
X07X08 09X0AX
/Plsclk Time
collision (the collided channels ceased transmission)
/dataen /dataen
/dataen /dataen 1>,/Ptxdat<0> /Prxbsy /Pcolrx /Pcol
0DX0E
X1FX1F
/Plsclk Time
Electrical Specification (Core) GNDc Input Input High Output Output High Input Load LSCLK (typical) (max) 0.7V 1.8V 0.6V 2.6V gates
Operating Temperature: Range 70°C Humidity (Non condensing) Storage Temperature: Range -10°C +80°C Humidity (Non condensing) Product used within hours after unpacking.
Semicon Inc. 8305 Highway West Austin Texas 78735 Tel: 6750 Fax: 7676
Distributed Japan Rikei Corporation 1-26-2 Nishi-Shinjuku Shinjuku-Ku Tokyo 163-05 Japan Tel: 3345 2189 Fax: 3344 3949
Semicon Limited Semicon House Victoria Road Burgess Hill West Sussex RH15 Tel: 1444 870408 Fax: 1444870452 www.ab-semicon.com
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