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Copperhead™ Series
CMI Transceiver
line interface modules
for SONET/SDH applications
(E4/STM-1 and STM-1)
low
profile
.200”
Compact, one package transceiver line
interface modules for interfacing to the
most widely used CMI chip sets for
E4/STM-1 and STM-1 applications
Model TM311TRFVA for AMCC S3015/S3016 or
S3031B chip sets. Contains loss-of-signal (LOS)
detection circuit.
Features
■ Convenient, one package solution replaces several
components on pc boards
■ Enhanced distance capabilities; excellent signal
integrity
■ ECL logic interface — directly compatible, completely
inter-operable
■ Maximum operating distance exceeds 200 meters on
75 ohm RG-6/u and RG-11/u coaxial cable
■ Industrial temperature range -40°C to +85°C
■ Two models:
■ TM311DVA is compatible with AMCC
S3005/S3006 and similar chip sets
■ TM311TRFVA is equipped with G.775
compliant loss-of-signal (LOS) detection
circuitry, and is compatible with AMCC
S3015/S3016 or S3031B and similar chip sets
■ Exceptional return loss ( > -15dB)
■ Low transmit/receive jitter
■ Small footprint for surface mounting
■ Low power dissipation; 475 mW typical
■ Complies with ANSI, Bellcore, and
ITU-T/G.703 specifications
Applications
■
■
■
■
STM-1 or E4-based transmission systems
STM-1 or E4 modules
STM-1 or E4 test equipment
Compatible with AMCC (S3005/S3006 or
S3015/S3016) and other leading STM-1 or
E4 chip sets
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Model TM311DVA
for AMCC S3005/S3006 chip sets
Copperhead™ CMI transceiver line interface modules
offer a convenient, one package, high performance solution for the complex chip interfacing requirements of CMI
applications. The compact packages include transformer
coupling for both TX and RX functions, an equalizer, a differential amplifier, and buffering for ECL level input and
output.
Designed to be inter-operable with existing ECL fibre
transceiver drivers, the transceivers meet SONET/ITU-T
requirements for coded mark inversion (CMI) data transmission over copper.
The transceivers function equally well in both 311.04
Mb/s SONET STM-1 CMI and 278.528 Mb/s SONET E4
CMI applications, delivering fibre speed data transmission
and reception over more than 200 meters of 75 ohm
RG-6/u or RG-11/u coaxial cable.
Both Copperhead CMI transceiver line interface modules are supplied as surface mount gull wing packages.
TM
BRISTOL, PA 19007-6812 ● TEL 215-781-6400 ●
CMI MODULE—1
FAX 215-781-6403 ● www.pulsespecialty.com
BEFORE
AFTER
(unequalized)
(equalized for CMI)
(Figure 1) Actual oscilloscope tracing of 311 Mb/s
unequalized input to receiver pins 13 and 14 after
transmission over 200 meters of RG-6/u coaxial
cable.
(Figure 2) Tracing of the same signal after
equalization. Receiver output measured at pins
2 and 3.
Technical description
CopperheadTM CMI transceiver line interface modules (LIM) take a differential ECL level CMI (coded mark inversion) data signal from the available CMI
silicon and convert it to a drive level suitable for transmission over copper cable,
and pre-conditioned to meet the G.703 output masks (for binary "ones" and
"zeros").
The transceiver LIM matches the impedance of both the ECL circuit and
the cable plant, providing a resultant output signal with exceptional return loss.
It accomplishes this by utilizing a specially designed wideband pulse transformer, which converts the signal to the appropriate current and voltage levels.
The receiver portion of the transceiver LIM takes the signal from the copper cable, equalizes it using similar impedance matching techniques, and converts the composite signal to ECL level CMI for the mating STM-1 silicon.
Signal clarity is much improved over non- interfaced conditions (see figures
above).
Benefits of transformer coupling
The pulse transformers used in our CopperheadTM transceiver LIMs
provide high isolation and optimum damping of transients. They also eliminate
DC components in the signal and provide common mode signal rejection. The
transformer is also used to match the load to the source and provide maximum
power transfer, and also to prevent reflections from transmission line effects.
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Product Qualification Test Outline
I. Subgroup I (all devices - 40 pieces)
Electrical tests at 25°
■ Receiver (Rx) tests
- Jitter (total peak-to-peak)
■ Transmit (TX) tests
- CMI Mask Test (rise time, fall time, and amplitude)
- Jitter (total peak-to-peak)
■ Total power supply current
II. Subgroup II (4 pieces)
External visual inspection
■ Resistance to solvents per MIL-STD-202, Method 215H
- 1 part isopropyl alcohol, 3 parts mineral spirits
- Trichloroethane
- Terpene defluxer with a minimum of 90% d-limonene
and 10% surfactant
- 42 parts water, 1 part propylene glycol monomethyl
ether, 1 part monoethanolamine
■ Terminal strength per MIL-STD-883, Method 2004.5
- Lead tension
III. Subgroup III (4 pieces)
Solderability
■ Per MIL-STD-202, Method 208, with a 4-hour
steam age
IV. Subgroup IV (6 pieces)
Resistance to soldering heat
■ Hand solder (2 pieces), solder dip temperature of 430
±5° C for 3 seconds maximum
■ Vapor phase reflow (4 pieces) for a period of 60
seconds at a temperature of 215 +5/-0° C
V. Subgroup V (6 pieces)
Thermal shock
■ Per MIL-STD-202, Method 107, Condition A-1, except
temperature range shall be -20° C to +125° C, 25
cycles
Vibration
■ Per MIL-STD-202, Method 204D, Condition D, 20G
peak acceleration, 10 Hz to 2 KHz and return to 10 Hz
traversed in 6 minutes
Shock
■ Per MIL-STD-202, Method 213B, Condition J, 30G,
11msec shock, 3 shocks in each direction along
mutually perpendicular axes
VI. Subgroup VI (6 pieces)
Life Test
■ Per MIL-STD-202, Method 108, 1000 hours at a
temperature of 75° C
VII. Subgroup VII (8 pieces)
Humidity Test
■ Humidity test @ 40° C, and 90% humidity (4 pieces)
VIII. Subgroup VIII (6 pieces)
Electrostatic Discharge, ESD Classification
■ The ESD classification to be derived from ESD
testing per IEC801-2, EN50082-1, Criteria B
NOTE: There shall be 0 (zero) rejects allowable for
each of the subgroups.
EMC Immunity and Radiated Emissions Tests
■ EN 55022: (1993) Radio Disturbance CISPR Class A
■ IEC 1000-4-2 ESD Test Method
Performance Criteria B, Level 2
■ IEC 1000-4-3 Radiated Immunity
Performance Criteria A, Level 3 (10V/m)
■ IEC 10004-4 EFT Test Method
Performance Criteria B, Level 3 (at I/O port)
Criteria A: The system shall continue to operate normally. The EUT shall be deemed to have passed the immunity tests if no
bit errors occur when receiving data over the cable. Changes of state, reset condition, unrecoverable jab condition,
blocked network, or loss of packets is unacceptable.
Criteria B: The system shall operate normally with no data errors through the loop after the test. During the test, data errors,
aborted frames and collisions are acceptable. No change of operating state such as system reset or unrecoverable
condition is permitted during or after the test.
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CMI MODULE—3
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Table 1
Absolute Maximum Ratings
P AR AMETE R
SYM
MIN
MAX
UNIT
Storage temperature
TS
-55
+150
°C
Operating temperature ambient
TA
-40
+85
°C
Power supply voltage ( MECL or PECL)
VC C
-6.0
6.0
V
Power supply current 1
IC
-
100
mA
Power dissipation (total)
PD
-
525
mW
Output current
IO
-
100
mA
Data input voltage
VI
0
VC C +0.5
V
Differential input voltage
VD
-
2.40
V
-
-
220/60
°C/s
Component body temperature/time
Note 1: Excluding external pull-down resistors
Important: This is a hybrid device and is rated for 220oC max for 60 seconds.
Contact factory for recommended solder reflow profile.
Table 2
General Electrical Parameters
P AR AMETE R
S TM-1
E4/S TM-1
UNIT
Data rate
155.52
139.264
Mb/s
Clock rate
311.04
278.528
Mb/s
Tolerance
± 100
± 100
pp m
0 to 200
0 to 200
meters
75
75
oh ms, no minal
Operating distance RG-6/u or RG-11/u cable
Cable impedance
R G-6/u or R G-11/u cable
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Table 3
Transmitter Electrical Characteristics
PARAMETER
VCC = 4.75V to 5.25V
SYM
MIN
TYPICAL
MAX
UNIT
Input data voltage
Low
High
VIL
VIH
VCC -2.000
VCC -1.110
VCC -1.750
VCC -0.880
VCC -1.500
VCC -0.670
V
V
Input current
Low
High
IIL
IIH
0.4
-
-
0.4
mA
mA
Data rate
DR
139.264
-
155.52
Mb/s
Return loss for 139.264 Mb/s (7MHz to 210MHz)
S11
-15
-
-
dB
Return loss for 155.51 Mb/s (8MHz to 240MHz)
S11
-15
-
-
dB
TPK-PK
-
50
225
ps
Total peak-peak transmit jitter
Note:
Output of transmitter shall meet the mask requirements of G.703 Figures 24 and 25 (155.52 Mb/s)
and Figures 19 and 20 (139.264 Mb/s)
Table 4
Receiver Electrical Characteristics
P AR AMETE R
VCC = 4.75V to 5.25V
SYM
MIN
TYPIC AL
MAX
UNIT
V OL
V OH
V CC -2.000
V CC -1.110
V CC -1.750
V CC -0.880
V CC -1.500
V CC -0.670
V
V
DR
139
-
155
Mb/s
T R/T F
0.4
-
1.7
ns
Return loss for 139.264 Mb/s (7MHz to 210MHz)
S 11
-15
-22
-
dB
Return loss for 155.51 Mb/s (8MHz to 240MHz)
S 11
-15
-22
-
dB
T PK-PK
-
350
900
ps
Output data voltage
Low
High
Data rate
Output rise and fall ti me
(20-80% )
Total peak-peak receive jitter
Table 5
( 100m RG-6/u)
G.775 Loss of Signal (LOS); applicable to TM311TRFVA only
PA RAMET ER
MIN
MAX
20 dB flat response 1 MHz to 311.04 MHz
Signal detect pin #4 shall be asserted
V OH
V CC -1.110V
V CC -0.670V
35 dB flat response 1 MHz to 311.04 MHz
Signal detect pin #4 shall be deasserted
V OL
V CC -2.000V
V CC -1.500V
Attenuation
16 dB
+3 dB
19 dB
RG-6/u ~ 4 dB/33 meters (100 ft) @ 300 MHz
~ 120 meters of R G-6/u (cable loss)
margin
loss budget
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CMI MODULE—5
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Application example:
TM311DVA with AMCC S3005/S3006 chip sets
Application example:
TM311TRFVA with AMCC S3015/S3016 chip sets
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Application example:
TM311TRFVA with AMCC S3031B chip
Interface Application Note: For AMCC S3031B and TM311TRFVA
See Note 1
TRANSMITTER SECTION
Tx+(15)
Di
(25)
TSDATOP (12)
(Z:50 ohm)
75 OHM
Coax Cable
Plant
75 Ohm
Transmission
Line
Isolation
Transformer
1:1
Transmit Filter,
ESD Protection &
Differential Driver
Tx-(16)
330
LOSOPT (52)
Do
(3)
Receive Filter/EQ
ESD Protection &
Differential Amplifier
RSDATIP (66)
(Z:50 ohm)
100
Do\
(2)
(Z:50 ohm)
Rx-(13)
AMCC
S3031B
SEE TABLE
330
RECEIVER SECTION
Isolation
Transformer
1:1
330
SD
(4)
Rx+(14)
75 Ohm
Transmission
Line
TSDATON (13)
(Z:50 ohm)
Di\
(24)
TM311TRFVA
75 OHM
Coax Cable
Plant
100
RSDATIN (65)
S3031B Enable/Select Settings
Description
SERDATEN
EQUALSEL
XFRMENA
XFRMENB
VCC(28)
VCC(1)
BEAD
Fair-Rite:274319447
330
330
Gnd
Pin No.
Logic State
8
TTL LOW
TTL LOW *
51
92
94
TTL HIGH
TTL HIGH
* ANDATIN (Pin 46) : Open
.1uF
+5.0 Vdc
.010uF
.027 uF, 500 VOLT
Place cap between pin # 13 (Rx-) and # 7, #8 (Gnd.)
Repeat for Tx, place between pins # 16 (Tx-) and #21,#22 (Gnd.)
DC/Signal
Ground
Cable Shield/
Earth Ground
Note1: The TM311TRFVA should be placed as close as possible to the cable
connector, within 0.50" to minimize transmission (strip) line attenuation.
Note 2: Pins nos.1 & 28 of TM311TRFVA to be individually AC-coupled to GND with 0.1uF/50V capacitors.
Pin nos. 7,8,21,& 22 to be connected to VEE (GND for PECL).
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G.703 Compliant Binary 0 Mask
(155.52 Mb/s)
750 mV
G.703 Compliant Binary 1 Mask
(155.52 Mb/s)
750 mV
1
150 mV
/div
150 mV
/div
trig’d
trig’d
T
T
1
-750 mV
-750 mV
965ps/div
965ps/div
G.703 Compliant Binary 0 Mask
(139.264 Mb/s)
750 mV
G.703 Compliant Binary 1 Mask
(139.264 Mb/s)
750 mV
1
150 mV
/div
150 mV
/div
trig’d
trig’d
T
T
1
-750 mV
-750 mV
1.078ns/div
1.078 ns/div
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Transceiver Pinouts
Pin number(s)
1,28 . . . . . . . .
The positive supply of the line interface module. Connect to
+5.0V for PECL applications, and to Gnd for ECL applications.
2,3
........
DO , DO: Differential ECL data outputs. These outputs can drive 50 ohm loads
connected to VCC –2.0V. Recommend 330 ohms to Gnd.
===============================================================================================
TM 311TRFVA (with G.775-compliant LOS)
4
........
SD: Single ECL compatible output indicating the state of the electrical input.
An ECL HIGH on SD indicates that the input voltage level is above threshold.
Threshold = 20dB flat response 1 to 311.04 MHZ.
5
........
SD: Opposite polarity of Pin #4.
TM 311DVA (without LOS)
4
........
No connect.
5
........
No connect.
===============================================================================================
7,8
........
Gnd (VEE): The negative supply of the line interface module. Connect to Gnd for raised
ECL (PECL) applications, and to –5.2V for standard ECL applications.
13,14 . . . . . . . .
RX-, RX+ : Transformer coupled differential inputs to receiver section. For coax applications, RXshould be connected to shield of cable/earth Gnd; RX+ should be connected to the center conductor.
Earth Gnd should be AC coupled to DC signal Gnd using a 0.027 µF capacitor, 500V.
15,16 . . . . . . . .
TX+ , TX- : Transformer coupled differential outputs to cable. For coax applications, TX- should be
connected to shield of cable/earth Gnd; TX+ should be connected to the center conductor. Earth Gnd
should be AC coupled to DC signal Gnd using a 0.027 µF capacitor, 500V.
21,22 . . . . . . . .
Gnd (VEE): The negative supply of the line interface module. Connect to Gnd for
raised ECL (PECL) applications, and to –5.2V for standard ECL applications.
23
VBB : Is an output pin, which is used for biasing up a threshold reference level, i.e. PECL (3.67V). This
pin can only source 1 mA maximum.
........
24,25 . . . . . . . .
DI, DI : Differential ECL compatible data inputs to the transmitter side of the module.
6, 9, 10, 11, 12, 17,
18,19, 20, 26, 27 . . These pins are "no connect;" do not apply Gnd, VCC, or signal lines to these pins.
Board Layout Considerations
■
0.1 µF capacitors should be ceramic and placed
as close to the VCC pins (1 & 28) of the transceiver
as possible.
■ Differential lines should be of equal length.
■ Data out and signal detect output lines
should be as short as possible and isolated from
noisy sources.
■ Controlled impedance traces from pins 14 (RX+) and
15 (TX+) of the transceiver to the BNCs must be used
in order to control return loss.
TWO PEARL BUCK COURT
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■ A DC signal ground plane should occupy the complete
area directly beneath the transceiver from pins 1-12
and 17-28.
■ The earth ground plane should occupy the complete
area directly beneath pins 13-14 and 15-16.
■ There should be a separation of 0.050" between earth
and DC ground.
■ The earth ground should be AC coupled to DC ground
with a 0.027 µF capacitor on both sides of the
tranceiver (TX side and RX side).
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Dimensions and transceiver connections: TM311TRFVA
Dimensions and transceiver connections: TM311DVA
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Ordering Information
Available Part Numbers:
TM 311 TR F V A
A
- All 28 pins provided for mounting
V
- Impedance matched for video and mini coax (75 ohm)
F
- Surface mount, gull wing flat package: .610"W x .760"L x .200"H
TR - G.775 LOS (loss of signal) circuit and transmitter and receiver
circuits
311 - 311.04 Mb/s SONET STM-1 CMI; also for SONET E4 CMI
278.528 Mb/s
TM - Line interface module; compact surface-mount package
TM 311 D V A
A
- All 28 pins provided for mounting
V
C
- Impedance matched for video and mini coax (75 ohm)
- Impedance matched for 50 ohm coax
D
- Surface mount, gull wing DIP package: .400"W x .800"L x .200"H
311 - 311.04 Mb/s SONET STM-1 CMI; also for
SONET E4 CMI 278.528 Mb/s
TM - Line interface module; compact surface-mount package
Related Products
Series
Features
TM133 Series
132.8125 Mbaud version 1/8 speed Fibre Channel/AT M
TM266 Series
265.625 Mbaud version 1/4 Speed Fibre Channel
TM531 Series
531.25 Mbaud version 1/2 Speed Fibre Channel
TM622 Series
622.08 Mbaud version SO NET OC-12, STM-4
TM1062 Series
1.0625 Gbaud version; short haul and long haul models
TM1250 Series
1.250 Gbaud version (Ethernet); short haul and long haul models
T-330SCT
330 Mbaud "H OT LINK"; 265.625 Mbaud version 1/4 speed Fibre Channel Transfor mer
T-1062SCT
1.0625 Gbaud version full speed Fibre Channel Transfor mer
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WARRANTY
Pulse Specialty Components warrants for a period of 90 days from the
date of shipment, that under normal use and service, its products will
be free from defects in workmanship and material. Pulse Specialty
Components’ sole responsibility under this warranty is, at its option,
to repair or replace, without charge, any defective product or part, or
to credit buyer for the purchase price of such defective product,
provided:
1) Buyer promptly notifies Pulse Specialty Components in writing
within the warranty period, and
2) The defective product or part is returned to Pulse Specialty
Components with transportation charges prepaid by Buyer, and
3) Pulse Specialty Components examination of such product shall
disclose to its satisfaction that said defect exists and has not been
caused by misuse, neglect, improper installation, repair or alteration,
or accident.
EXCEPT FOR THE ABOVE WARRANTY AND THE IMPLIED WARRANTY OF
TITLE, PULSE SPECIALTY COMPONENTS MAKES NO OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. NO LIABILITY IS ASSUMED FOR EXPENDABLE ITEMS SUCH AS LAMPS AND FUSES.
PULSE SPECIALTY COMPONENTS WILL NOT BE LIABLE FOR INCIDENTAL
OR CONSEQUENTIAL DAMAGES UNDER ANY CIRCUMSTANCES.
Catalog #CMI-9932
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Issue Date 9/1/99
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