SY87700AL Datasheet, PDF (1/16 Pages) Micrel Semiconductor – Low-Power, 3.3V, 32Mbps to 208Mbps AnyRate Clock and Data Recovery

SY87700AL
Low-Power, 3.3V, 32Mbps to 208Mbps
AnyRate^® Clock and Data Recovery
General Description
The SY87700AL is a complete clock recovery and data
retiming integrated circuit for data rates from 32Mbps up
to 208Mbps NRZ. The device is ideally suited for
SONET/SDH/ATM applications and other high-speed
data transmission systems.
Clock recovery and data retiming is performed by
synchronizing the on-chip VCO directly to the incoming
data stream. The VCO center frequency is controlled by
the reference clock frequency and the selected divide
ratio. On-chip clock generation is performed through the
use of a frequency multiplier PLL with a byte rate source
as reference.
The SY87700AL also includes a link fault detection
circuit.
Data sheets and support documentation can be found
on Micrel’s web site at: www.micrel.com.
Features
AnyRate^®
• 3.3V power supply
• SONET/SDH/ATM compatible
• Clock and data recovery from 32Mbps up to
208Mbps NRZ data stream; clock generation from
32Mbps to 208Mbps
• Two on-chip PLLs: one for clock generation and
another for clock recovery
• Selectable reference frequencies
• Differential PECL high-speed serial I/O
• Line receiver input: no external buffering needed
• Link fault indication
• 100K ECL-compatible I/O
• Industrial temperature range (–40°C to +85°C)
• Low power: fully compatible with Micrel’s SY87700V,
but with 30% less power
• Available in 32-pin EPAD-TQFP and 28-pin EPAD
SOIC packages, (28-pin SOIC is available, but NOT
recommended for new designs.)
Applications
• SONET/SDH/ATM OC-1 and OC-3
• Fast Ethernet, SMPTE 259
• Proprietary architecture up to 208Mbps
AnyRate is a registered trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
November 2006
M9999-111406-B
[e-mail] or [phone]