|
VSC8162 Datasheet, PDF (1/20 Pages) Vitesse Semiconductor Corporation – 2.488 Gbit/sec SONET/SDH 1:16 Demux with Clock Recovery | |||
|
VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
VSC8162
2.488 Gbit/sec SONET/SDH
1:16 Demux with Clock Recovery
Features
⢠2.488Gb/s 1:16 Demux with Integrated Clock and
Data Recovery
⢠Recovered Clock and Data Available
⢠Monolithic Phase Locked Loop
⢠Digitally Adjustable Serial Data Sampling Point
⢠Differential Low Speed Outputs
⢠Differential/Single-ended Reference Clock
⢠Loss of Lock Detection
⢠Meets SONET OC-48 and SDH STM-16 Jitter
Tolerance Requirements
General Description
The VSC8162 combines a clock recovery unit (CRU) with a 1:16 demultiplexer on a single chip to directly
generate 16-bit wide data from an incoming 2.488Gb/s NRZ data stream. An on-chip Phase Locked Loop (PLL)
generates a 2.488GHz clock which remains phase locked to the incoming data. The incoming data is retimed
and demultiplexed to a 16-bit word. A Loss of Lock (LOL) signal indicates gross conditions where incoming
data no longer has sufï¬cient transitions to keep the CRU in lock.
VSC8162 Functional Block DIagram
DINVERT
DI+
DIâ
REFCK+
REFCKâ
5
PADJ[4:0]
Data
Retime
Clock
Recovery
Divide
by 16
RTDO+
RTDOâ
D0+
D0â
D15+
D15â
PARITY+
PARITYâ
CLK16+
CLK16â
CLKO+
CLKOâ
LOL
NOREF
G52209-0, Rev. 2.0
9/14/98
© VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 ⢠805/388-3700 ⢠FAX: 805/987-5896
Page 1
|
▷ |