NETWORK PRODUCTS
VSC8239
9.953 Gbps to 11.3 Gbps Dual XFP Signal Conditioner
BLOCK DIAGRAM:
LOLN
PIO4,
LOL_POL
RX_BYPSEL[ 3:0]
BYP
LOGIC
TX_LOL
RX_GAIN
RX_BOOST
DAC
DAC
RXFILT
DAC
RX_BW
RX_OC
DAC
Receive
Data Out
RD+
RD–
OD
CK/4
VGA
RX CDR
RXIN+
RXIN–
Receive
Data In
RX_BYPASS
RX_LT R
Offset
Correction
RX_OC_
LOOP_ENBL
LOS_ POL
LOS/LOT
REFCLK+
REFCLK–
HOST_ LPBCK/
RX_ D NV
I
LOS
RX_LOS
HOSTS IDE
PIO[4:0]
Serial
Interface
Control
TX_OC_
LOOP_ENBL
CTRL
Signals
Read back
Signals
Thr
TX_LOL
DAC
DAC
LINES IDE
SET/ CLR
Offset
Correction
Transmi t
Data In
TD+
TD–
LINE_LPBCK/
T X_DINV
TX_ LTR
TX CDR
VGA
DAC
DAC
DAC
TX_BOOST
TX_GAIN
TX_OC
TX_BW
DAC
CK/4
OD
BYP
L OGIC
TX_BYPASS
TX_ BYPSEL[ 3:0]
TXOUT+
TXOUT–
Transmit
Data Out
TXF
ILT
CDD12
F E AT U R E S :
4Small
size – 32-Pin, QFP (5 mm x 5 mm) package
49.953
Gbps to 11.3 Gbps operation
4Integrated
loopback functions
4Programmable
gain and equalization for Rx and Tx
4Two-wire
Serial Interface/SPI Serial Control Interface
410
mV typical input sensitivity
4Built
In Self Test (BIST) features including flexible error detection modes
4Full
XFP compliant jitter specifications
BENEFITS:
4Reduces
board space usage
4Continuous
tuning of the operation frequency without needing to select
between VCO
4Provides
on-chip line and diagnostic functions
4Allows
optical and XFI adaption of input signals for optimized sensitivity
and jitter performance
4Allows
serial access to internal control registers
4Provides
long-haul receive optical sensitvity
4Allows
for built in test signal generation of industry standard PRBS and
user defined-patterns coupled with a full rate error detection capability
4Fully
meets all XFP MSA SONET and datacom jitter specifications
including jitter generation, tolerance, and transfer
S P E C I F I C AT I O N S :
49.953
Gbps to 11.3 Gbps operation
410
mV typical input sensitivity
45
mm x 5 mm package
4Full
XFP compliant jitter specifications
4XFI
compliant IO specifications
41.8
V single power supply
4600
mW typical power dissipation
PB-VSC8239-001
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
