Data Sheet
1
2002-03-21
Small Form Factor
Multimode 850 nm
2.125 and 1.0625 GBd Fibre Channel
2x5 Transceiver with LCTM Connector
V23818-M305-L57
V23818-M
305-L57
Part Number
Voltage
Signal Detect
Input
Output
V23818-M305-L57
3.3 V
TTL
AC
AC
Fiber Optics
LCTM is a trademark of Lucent
Features
Small Form Factor transceiver
Full compliant with Fibre Channel
Data rate autonegotiation between
1.0625 and 2.125 GBd
Excellent EMI performance
RJ-45 style LCTM connector system
Half the size of SC Duplex 1x9 transceiver
Single power supply (3.3 V)
Extremely low power consumption of
445 mW typical
PECL and LVPECL differential inputs and outputs
System optimized for 62.5/50 m graded index fiber
Multisource 2x5 footprint
Small size for high port density
UL-94 V-0 certified
ESD Class 1 per MIL-STD 883D Method 3015.7
Compliant with FCC (Class B) and EN 55022
For distances of up to 700 m
Class 1 FDA and IEC laser safety compliant
AC/AC coupling in accordance to SFF MSA
Operating case temperature: 10C to 85C
V23818-M305-L57
Pin Configuration
Data Sheet
2
2002-03-21
Pin Configuration
Figure 1
Tx
Rx
HL4
HL1
HL2
HL3
1 2 3 4 5
10 9 8 7 6
10-PIN MODULE - TOP VIEW
MS2
MS1
V23818-M305-L57
Pin Configuration
Data Sheet
3
2002-03-21
Pin Description
Pin
No.
Symbol
Level/Logic Function
Description
1
V
EEr
N/A
Receiver
Signal Ground
2
V
CCr
N/A
Receiver
Power Supply
3
SD
TTL
Signal Detect
Normal Operation: Logic "1"
Output, represents that light is
present at receiver input
Fault Condition: Logic "0" Output
4
RD
PECL
Received Data Out
Not
5
RD+
PECL
Received Data Out
6
V
CCt
N/A
Transmitter Power Supply
7
V
EEt
N/A
Transmitter Signal Ground
8
TxDis
TTL
Input
Transmitter
Disable/Enable
A low signal switches the laser on.
A high signal switches the laser off.
9
TD+
PECL
Transmit Data
Transmitter Data In
10
TD
PECL
Transmit Data Not
Transmitter Data In
MS1
MS2
MS
N/A
Mounting Studs
Mounting Studs are provided for
transceiver mechanical
attachment to the circuit board.
They also provide an optional
connection of the transceiver to
the equipment chassis ground.
HL1
HL2
HL3
HL4
HL
N/A
Housing Leads
The transceiver Housing Leads
are provided for additional signal
grounding. The holes in the circuit
board must be included and be
tied to signal ground (see
"Application Notes" on
Page 11
).
V23818-M305-L57
Description
Data Sheet
4
2002-03-21
Description
The Infineon Fibre Channel multimode transceiver part of Infineon Small Form Factor
transceiver family is based on the Physical Medium Depend (PMD) sublayer and
baseband medium, type (short wavelength), Fibre Channel
FC-PI 200-M5-SN-I, 200-M6-SN-I
FC-PI 100-M5-SN-I, 100-M6-SN-I
FC-PH2 100-M5-SN-I, FC-PH2 100-M6-SN-I.
The appropriate fiber optic cable is 62.5 m or 50 m multimode fiber with LCTM
connector.
The Infineon Fibre Channel multimode transceiver is a single unit comprised of a
transmitter, a receiver, and an LCTM receptacle. This design frees the customer from
many alignment and PC board layout concerns.
This transceiver supports the LCTM connectorization concept. It is compatible with RJ-45
style backpanels for high end Data Com and Telecom applications while providing the
advantages of fiber optic technology.
The module is designed for low cost SAN, LAN, WAN, Fibre Channel applications. It can
be used as the network end device interface in mainframes, workstations, servers, and
storage devices, and in a broad range of network devices such as bridges, routers, hubs,
and local and wide area switches.
This transceiver operates at 1.0625/2.125 Gbit/s from a single power supply (+3.3 V).
The full differential data inputs and outputs are PECL and LVPECL compatible.
Operating Range over each Optical Fiber Type
Fiber Type
Limit Values
Unit
min.
typ.
max.
at 2.125 GBd
62.5 micron MMF
0.5
2 to 150
300
meters
50.0 micron MMF
0.5
2 to 300
500
at 1.0625 GBd
62.5 micron MMF
0.5
2 to 300
400
meters
50.0 micron MMF
0.5
2 to 550
700
V23818-M305-L57
Description
Data Sheet
5
2002-03-21
Functional Description of 2x5 Pin Row Transceiver
This transceiver is designed to transmit serial data via multimode cable.
Figure 2
Functional Diagram
The receiver component converts the optical serial data into PECL compatible electrical
data (RD+ and RD). The Signal Detect (SD, active high) shows whether an optical
signal is present.
The transmitter converts PECL compatible electrical serial data (TD+ and TD) into
optical serial data. Data lines are differentially 100
terminated.
The transmitter contains a laser driver circuit that drives the modulation and bias current
of the laser diode. The currents are controlled by a power control circuit to guarantee
constant output power of the laser over temperature and aging.
The power control uses the output of the monitor PIN diode (mechanically built into the
laser coupling unit) as a controlling signal, to prevent the laser power from exceeding the
operating limits.
Single fault condition is ensured by means of an integrated automatic shutdown circuit
that disables the laser when it detects laser fault to guarantee the laser Eye Safety.
The transceiver contains a supervisory circuit to control the power supply. This circuit
makes an internal reset signal whenever the supply voltage drops below the reset
threshold. It keeps the reset signal active for at least 140 milliseconds after the voltage
has risen above the reset threshold. During this time the laser is inactive.
A low signal on TxDis enables transmitter. If TxDis is high the transmitter is disabled.
Laser
Driver
Power
Control
Receiver
o/e
o/e
Laser
e/o
Rx Coupling Unit
TD
-
TD+
TDis
RD
-
RD+
SD
Laser
Coupling Unit
Multimode Fiber
LEN
Monitor
Automatic
Shut-Down
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