V23818-K305-B57 Infineon Technologies, V23818-K305-B57 Datasheet - Page 2

• Manufacturer Part Number: V23818-K305-B57
• Description: TXRX ETHRNET MULT-MODE 1.25GBIT
• Manufacturer: Infineon Technologies
• Series: -r

Specifications of V23818-K305-B57

• Data Rate: 1.25Gbps
• Wavelength: 850nm
• Applications: Ethernet
• Voltage - Supply: 3.1 V ~ 3.5 V
• Connector Type: LC Duplex
• Mounting Type: SFP
• Lead Free Status / Rohs Status: Contains lead / RoHS non-compliant
• Other names: V23818-K305-B57IN

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 1000 Base-SX (short wavelength)
and Fibre Channel
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 µm or 50 µm multi-
mode fiber with LC™ connector.
Operating range over each optical fiber type
The Infineon Fibre Channel / Gigabit Ethernet multimode trans-
ceiver is a single unit comprised of a transmitter, a receiver, and
an LC™ receptacle.
This transceiver supports the LC™ connectorization concept.
It is compatible with RJ-45 style backpanels for high end
Data Com and Telecom applications while providing the advan-
tages of fiber optic technology.
The module is designed for low cost SAN, LAN, WAN, Fibre
Channel and Gigabit Ethernet 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 GBd / 1.25 GBd from a
single power supply (+3.3 V). The full differential data inputs
and outputs are PECL and LVPECL compatible.
Fiber Optics
Fiber type
62.5 micron MMF
50.0 micron MMF
Min.
0.5
0.5
Typ. (meters)
2 to 300
2 to 550
Max.
400
700
2
Functional Description of SFP Transceiver
This transceiver is designed to transmit serial data via
multimode cable.
Functional Diagram
The receiver component converts the optical serial data into
PECL compatible electrical data (RD+ and RD–). The LOS of
Signal (LOS, active low) 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 differen-
tially 100
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 out-
put 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 pre-
vent 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 when-
ever 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 or not
connected the transmitter is disabled.
The information which kind of SFP module has been plugged
into an SFP port can be read through the MOD-DEF interface.
The information is stored in an I
ceiver.
V23818-K305-B57 , SFP MM 850nm 1.0625GBd Fibre Channel 1.25GBE Trx (LC™)
RD
RD+
LOS
MOD-DEF
TxFault
TxDis
TD
TD+
terminated.
Monitor
Automatic
Shut-Down
LEN
Receiver
EPROM
Power
Control
Laser
Driver
2
C-Eprom inside the SFP Trans-
Rx Coupling Unit
Laser
Coupling Unit
e/o
Laser
o/e
o/e
Multimode Fiber