jxp-01lmad1 JDS Uniphase Corporation, jxp-01lmad1 Datasheet - Page 3

• Manufacturer Part Number: jxp-01lmad1
• Description: Multiprotocol Xfp Optical Transceiver --1310 Nm Dfb For Up To 10-km Reach
• Manufacturer: JDS Uniphase Corporation

3
MOD_DESEL
INTERRUPT
MOD_NR
RX_LOS
SDA
SCL
RD+
TD+
RD-
TD-
Power Supply Sequence /
In Rush Control Circuit
V
Figure 1. Transceiver functional block diagram
cc3
V
Receiver
The receiver converts incoming DC-balanced serial NRZ optical data from line rates
of 9.95 to 11.35 Gbps into serial XFI electrical data. Light is coupled to a PIN pho-
todetector from single-mode optical fiber through an industry-standard LC optical
connector. The electrical current from the PIN photodetector is converted to a volt-
age 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 receive
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 XFP MSA requirements.
cc3
CDR / Equalizer
V
CDR / Limiting
cc2
PDOWN/RST
Amplifier
MULTIPROTOCOL XFP OPTICAL TRANSCEIVER
—1310 NM DFB FOR UP TO 10-KM REACH
V
cc3
No Connect
MCU
V
cc5
MOD_ABS
V
GND
Laser Driver
ee5
Transceiver Ground
ROSA
V
GND
TIA
cc3
TOSA
REFCLK-
REFCLK+
TX_DIS