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Teilenummer | PE-68517L |
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Beschreibung | (PE-69016 / PE-68517L) LAN Transceiver | |
Hersteller | Valor Electronics | |
Logo | ||
Gesamt 12 Seiten www.DataSheet4U.com
FASTPULSE MediaCAT
HIGH SPEED LAN TRANSCEIVERS
Twisted pair transceiver kit for TP-FDDI,
100BaseTX and ATM 155 Mbps
Matched integrated circuit and magnetic
module
Flexible, cost-effective frontend solution
Part
Number
Description
Application
General Description
PE-95000
PE-95010
PE-68517L
PE-69016
Transceiver IC
Transceiver IC
Magnetic Module
Magnetic Module
100Base-TX & TP-FDDI
ATM 155 Mbps
100Base-TX
ATM 155 Mbps
TP-FDDI
100Base-TX
FASTPULSE MediaCAT (Chip And Transformer) is a transceiver
component kit which enables the design of high performance, low-
cost frontends for high speed LAN products. MediaCAT consists of
Features
• High performance twisted pair transceiver solution
a monolithic twisted pair transceiver which implements the core • Flexible frontend kit for 100Base-TX, ATM 155 & TP-FDDI
Transmit/Receive signal processing and a matched magnetic mod-
ule which provides the wideband transformer coupling and EMI
filtering. The MediaCAT transceiver forms the analog interface
• Full compliance with PMD standards IEEE, ANSI and ATM
• Supports 100m of Unshielded Twisted Pair (UTP), Category 5 DataShee
between the digital PHY controller and the twisted pair cable
or Shielded Twisted Pair (STP) cable
(UTP-5 or STP). The matched nature of the devices anDdaptraoSvehneet4U.com
performance reduces the design effort and risk of implementing
100 Mbps+ frontends.
Employing FASTPULSE technology, the MediaCAT transceiver
PE-95000/10 incorporates transmit conditioning, receiver adaptive
equalization to compensate for cable losses and baseline restora-
tion to correct DC drifts in receiver datastream. The two key
MediaCAT IC
• Integrates high performance and programmable adaptive
equalizer
• Integrates compliant base line wander correction circuitry
• Versions for MLT3 and binary operation
encode/decode schemes which the ICs can implement are MLT3
(PE-95000) and Binary (PE-95010). MLT3 is a three level coding
scheme which is used in TP-FDDI and 100Base-TX applications to
support 125 Mbaud (100 Mbps) data transmission over 100 m of
• Programmable drive current
• Direct interface to PHY controllers
• EMC optimized design — edge rate control, CMRR
shielded (STP) or unshielded twisted pair (UTP) Category 5 cable • BiCMOS device/PLCC28 package
(2 pair). Binary coding (NRZ) is used principaly for
ATM 155 Mbps applications, to support 155 Mbps transmission
over 100 m STP or UTP Category 5 cable. The device has
a high degree of flexibility to allow it to be used in various standard
MediaCAT Magnetics
• Integrated transformer/choke device — tuned to MediaCAT IC
applications and to enable performance tailoring for customer
specific requirements.
• Provides TX/RX wide bandwidth isolation and EMI filtering
• SMD package for IR reflow compatibility
The PE-68517L is an integrated magnetic module device designed
for TP-FDDI, 10/100Base-TX and ATM155 Mbps applcations. It Applications
provides a balanced, wideband transformer with dual common
mode chokes to minimize EMI emissions. The device charac-
teristics are tuned to the MediaCAT transceiver resulting in an
• Network adapter cards (ISA, PCI, VME etc.)
• Hubs or concentrators
optimized device pair. For certain 10/100 Mbps applications the
PE-69016 provides the 10 Mbps and 100 Mbps magnetic interface
with integrated passive mixer.
MediaCAT devices meet or exceed the electrical specifications of
the following standards: ANSI X3.263 TP-PMD for TP-FDDI, IEEE
• Motherboards (PC, workstation, industrial)
• Bridges, routers, switches
• Switch uplink modules
• Point to point links (Telecom)
802.3u for Fast Ethernet 100Base-TX and ATM-UNI-PMD STS3c • Peripherals: storage, print servers, etc.
for ATM 155 Mbps applications.
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U.S.A: TEL 619 674 8100 • EUROPE: TEL 44 1483 401700 • ASIA: TEL 886 7 821 3141 • WEB: http://www.pulseeng.com
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1 H335.A (9/97)
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FASTPULSE MediaCAT
Application Circuits
TP-FDDI/100BASE-TX
100pF
301Ω
150pF
237Ω
150pF
FB
+5V
R
et4U.com
ATM 155
PHY CHIPSET
+5V
RECEIVE DATA
SIGNAL DETECT
TRANSMIT DATA
82Ω
+5V
130Ω
82Ω E
130Ω
E 82Ω
130Ω
E
100pF
43
196Ω
2 1 28 27 26
+5V
7
ZEQ2P
VDDN
REQN
VDDR 25
10nF
82Ω R
5
RDP
6
RDN
RXN 24
23
RXP
130Ω
+5V
82Ω
130Ω
9
SDP
10
VSSN
R 12
13
8
TDN
TDP
CPEAK
PE-95000
TXN
TXP
ENCSEL
VDDTX
16
15
17
14
1MΩ
18pF
CDEL
EQGAIN
RR
11 19 20
10nF 976Ω 1K
21 18
220pF
22
4.7nF
301Ω
10nF
R
49.9 49.9 681Ω 10nF
Ω ΩR
R
0.1uF
R
49.9 49.9
ΩΩ
22pF
0.1uF
T
10nF
T
RT R R T R
+5V
FB
150 pF 237 Ω
301Ω
OPTIONAL [IMPROVE EMI & RETURN LOSS )
82nH
16
2
18pF
DataSheet4U.co15m 82nH
39.2
Ω
1
FB
+5V
TP-FDDI
PE-68517L
15
10
16 9
14
27
18
3 75Ω
RJ-45
CONNECTOR
8 RX-
7 RX+
6 A-
5 B-
4 B+
3 A+
2 TX-
1 TX+
75Ω
0.1uF 2Kv (Optional)
100BASE-TX
PE-68517L
10
9
7
8
75Ω
RJ-45
CONNECTOR
8 A-
7 A+
6 RX-
5 B-
4 B+
3 RX+
2 TX-
1 TX+
75Ω
DataShee
150 pF
R
0.1uF 2Kv (Optional)
PHY CHIPSET
+5V
RECEIVE DATA
SIGNAL DETECT
TRANSMIT DATA
82Ω
+5V
130Ω
82Ω E
130Ω
E 82Ω
130Ω
E
43
196 Ω
2 1 28 27 26
+5V ZEQ2P
7
VDDN
10nF
82Ω R
130Ω
+5V
5
RDP
6
RDN
9
SDP
10 VSSN
82Ω
130Ω
R
12
13
8
TDN
TDP
CPEAK
PE-95010
REQN
VDDR 25
301Ω
ATM USER
RXN
10nF
24 R
23
RXP
TXN
TXP
ENCSEL
VDDTX
16
15
17
14
+5V
49.9 49.9 681Ω
Ω ΩR
10nF PE-68517L
R
15
10
0.1uF
16
14
9
R
12pF
49.9 49.9
ΩΩ
0.1uF
T
2
1
3
7
8
75Ω
RJ-45
CONNECTOR
8 RX-
7 RX+
6 A-
5 B-
4 B+
3 A+
2 TX-
1 TX+
75Ω
1MΩ
18pF
CDEL
EQGAIN
10nF
0.1uF 2Kv Optional
RR
11 19 20
10nF 1.96K 1K
21 18
220pF
22
4.7nF
T
RT
R RTR
+5V
FB
OPTIONAL (IMPROVE EMI & RETURN LOSS)
82nH
16
2
12pF
82nH
15
39.2
Ω
1
ATM SWITCH
PE-68517L
RJ-45
CONNECTOR
10 8 TX-
9 7 TX+
6 A-
5 B-
4 B+
3 A+
7 2 RX-
8 1 RX+
75Ω 75Ω
0.1uF 2Kv Optional
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H335.A (9/97)
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6 Page www.DataSheet4U.com
FASTPULSE MediaCAT
EMC Considerations
TP-FDDI/100Base-TX uses MLT3 line coding (fundamental fre-
quency = 31.25 MHz) to shift 90% of spectral energy to below
40 MHz. ATM 155 (fundamental frequency = 77.5 MHz) uses
NRZ coding with 1 VPP amplitude to reduce EMI emissions.
5. Decoupling of RX/TX transformer center-taps (Pin 3 and 14)
to ground, as shown in application circuit, reduces common
mode impedance and consequently improves common mode
rejection.
The MediaCAT transceiver kit has been designed to minimize
EMI emissions and noise susceptibility. Some of the key mea-
sures which help to achieve this are as follows:
Edge-rate control on PE-95000/10 internal signals/transceiver
output.
Excellent CMRR and PSRR (power supply rejection ratio) of
transmit/receive amplifiers.
6. The PE-68517L allows a further option to terminate line side
common mode noise. In receive channel this can be done by
connecting pin 11 to chassis ground through the existing
unused pair RC network (75 Ω/0.1 µF). In transmit channel,
pin 6 can similarly be connected to same RC network.
It should however be noted that EMC performance is a system
measurement and highly implementation specific.
High performance balanced magnetics — tuned to transceiver
silicon.
Appendix 1: Physical ControllerChipsets
Dual common mode choke architecture. The PE-68517L em-
ploys a single high performance choke on receiver chip-side
to boost immunity. However, for transmit channel, there are
Standard
Vendor
Device
two complimentary chokes employed — one on chip-side and TP-FDDI/100TX
AMD
AM79865/AM79866
one on line-side. These are to minimize common mode emis-
sions. The transmit autoformer allows for effective common
mode termination, since a transformer center tap’s effective-
TP-FDDI/100TX National Semiconductor
ATM
PMC
DP83222/83257
SUNI Series
ness here would be reduced by the intervening choke
et4U.com impedance.
ATM
ATM
Fujitsu
Texas Instruments
ITC Series
TDC1500
It is crucial to employ
laying out the board.
good
high
speed
PCB
design
rules in
ATM
DataSheet4U.com
AMCC
S30XX
1. Use multi-layer PCB with dedicated ground and power layers
for best high frequency and EMC performance. At least four
layers are recommended with outside layers for signal rout-
ing and inner layers for supply planes.
2. Use of ground plane partitions as indicated in the layout
guide is recommended. The chassis ground is generally
connected to backplate directly. The ground plane area
under the magnetic module is left void for optimum noise
NOTES
1. Further Pulse Products: The FASTPULSE series includes fur-
ther transceiver products in more integrated platforms:
High Speed LAN Transceivers, a series of 9-pin transceivers
which are drop-in replacements for standard Fiber Optic
transceivers. Available for ATM, 100Base-TX and TP-FDDI.
separation.
MediaDrive is a compact surface mount module which
3. Use of shielded RJ45 (UTP-5) or DB9 (STP) is recom-
mended with galvanic contact to backplate for chassis
ground continuity.
integrates the MediaCAT transceiver IC and magnetic module
to yield a single chip solution. Available for ATM and
100Base-TX/TP-FDDI.
4. Termination of unused cable pairs is recommended. The
unused pairs are terminated in their common mode
Contact Pulse Engineering for more information on these and
other latest developments.
impedance (to chassis ground) to minimize cable reflections 2. Pulse Engineering has other magnetic modules which can be
and common mode standing waves. The application circuits
used with MediaCAT transceiver IC (Datasheet H303, H305
shown indicate one termination scheme, but there are other
and H316). Please contact Pulse for information on these and
options. Refer to the PMD standards for additional
Pulse’s catalog of high speed LAN magnetic modules.
information.
For More Information:
Corporate
12220 World Trade Drive
San Diego, CA 92128
Tel: 619 674 8100
FAX: 619 674 8262
http://www.pulseeng.com
Quick-Facts: 619 674 9672
Europe
1 & 2 Huxley Road
The Surrey Research Park
Guildford, Surrey GU2 5RE
United Kingdom
Tel: 44 1483 401700
FAX: 44 1483 401701
Asia
P.O. Box 26-11, KEPZ
6 Central Sixth Road
KEPZ, Kaohsiung
Taiwan, R.O.C.
Tel: 886 7 821 3141
FAX: 886 7 841 9707
Distributor
DataShePeetr4foUrm.canocme warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product
names mentioned herein may be trademarks or registered trademarks of their respective owners.
Printed on recycled paper. ©1997, Pulse Engineering, Inc.
DataSheet4 U .com
12
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H335.A (9/97)
12 Page | ||
Seiten | Gesamt 12 Seiten | |
PDF Download | [ PE-68517L Schematic.PDF ] |
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