JXP-01LMAB1 JDSU [JDS Uniphase Corporation], JXP-01LMAB1 Datasheet - Page 3

• Manufacturer Part Number: JXP-01LMAB1
• Description: Multiprotocol XFP Optical Transceiver-1310 nm for up to 10 km Reach
• Manufacturer: JDSU [JDS Uniphase Corporation]

3
Figure 1
MOD_DESEL
INTERRUPT
MOD_NR
RX_LOS
SDA
JDSU 10 Gbps 1310 nm multiprotocol XFP optical transceiver functional block diagram
SCL
RD+
TD+
RD-
TD-
Power Supply Sequence /
In Rush Control Circuit
V
cc3
Receiver
The receiver converts incoming DC balanced serial NRZ optical data from line
rate of 9.95 to 11.35 Gbps into serial XFI electrical data. Light is coupled to a PIN
photodetector from single-mode optical fiber through an industry-standard LC
optical connector. The electrical current from the PIN photodetector is converted
to a voltage in a high-gain transimpedance amplifier.
The amplified signal is passed to a signal conditioning IC that provides clock and
data recovery. The receive CDR function generates a clock that is at the same fre-
quency as the incoming data bit rate of the optical data input. The clock is phase
aligned by a PLL that samples the data in the center of the data eye pattern. The
CDR function does not require a reference clock to “lock” to incoming data. The
CDR contains a lock detect circuit that indicates successful locking of the PLL onto
the incoming data. Loss of signal, and signal lock detection is included in the re-
ceive circuitry that is reflected in the Mod_NR status pin. The recovered data is
output on the RD+ and RD- pins as a 100 Ω 340 mV peak-to-peak CML signal.
The output signal meets the XFP MSA requirements.
V
cc3
CDR / Equalizer
V
CDR / Limiting
cc5
PDOWN/RST
Amplifier
MUlTIPROTOCO l XFP O PTICA l TRANSCEI vER
—1310 NM FOR UP TO 10 KM REACH
V
Processor
cc3
No Connect
Micro-
V
cc2
MOD_ABS
V
Laser Control
GND
ee5
Circuit
Transceiver Ground
ROSA
V
GND
TIA
cc3
TOSA
REFCLK+
REFCLK-
TX_DIS