SY87702LHI Micrel Inc, SY87702LHI Datasheet

SY87702LHI

Manufacturer Part Number

SY87702LHI

Description

IC CLOCK/DATA RECOVERY 64-TQFP

Manufacturer

Micrel Inc

Type

Clock and Data Recovery (CDR)r

Datasheet

1.SY87702LHI.pdf (14 pages)

Specifications of SY87702LHI

Input

Differential

Output

Differential

Frequency - Max

325MHz

Voltage - Supply

3.15 V ~ 3.45 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

64-TQFP Exposed Pad, 64-eTQFP, 64-HTQFP, 64-VQFP

Frequency-max

325MHz

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Current page: 1 of 14
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Micrel, Inc.

■ 3.3V power supply

■ Complies with Bellcore, ITU/CCITT and ANSI

■ Compatible with FDDI, Gigabit Ethernet, Fibre

■ Low power

■ Clock and data recovery from 28Mbps up to 2.5Gbps

■ Selectable reference frequencies via programmable

■ Differential PECL and CML high-speed serial outputs

■ Line receiver input: no external buffering needed

■ Link fault indication

■ 100K ECL compatible I/O

■ Available in 64-Pin EP-TQFP package

■ Product obsolete. Use SY87721L for new designs

*Meets OC-48 Jitter Tolerance and Transfer

■ Transponders and section repeaters

■ Multiplexer's: access, add drop (ADM), and terminal

■ SONET/SDH/ATM: -based transmission systems,

■ Terabit routers and broadband cross-connects

■ Fibre optic test equipment

■ HDTV switching and transmission

AnyRate

M9999-072706

hbwhelp@micrel.com or (408) 955-1690

FEATURES

APPLICATIONS

specifications for applications such as OC-1, OC-3,

OC-12, OC-48*, and ATM

Channel, 2X Fibre Channel, SMPTE 259 and 292, and

proprietary applications

NRZ data stream

multiplier

(TM)

modules, and test equipment

is a registered trademark of Micrel, Inc.

3.3V 28Mbps-2.5Gbps AnyRate

CLOCK AND DATA RECOVERY

retiming integrated circuit for data rates from 28Mbps up to

2.5Gbps NRZ. The device is ideally suited for SONET/SDH/

ATM, Fibre Channel, and Gigabit Ethernet applications, as

well as other high-speed data transmission applications.

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 and can be used as a Clock

Multiplier Unit (CMU). The integrated CMU can provide this

clock signal at the TCLK outputs. Additionally, the TCLK

output can be selected to provide a copy of the RCLK

frequency.

Link Fault Detection circuit. This circuit, enabled by the output

of an optical module driving the CD input low, causes the

recovery PLL of the SY87702L to lock to the reference

clock's multiplied frequency under Loss-of-Signal conditions.

This low jitter clock is provided at the RCLK outputs and is

at the same frequency as that provided at the TCLK output.

DESCRIPTION

The SY87702L is a complete Clock Recovery and Data

Clock recovery and data retiming is performed by

For SONET/SDH applications, the SY87702L includes a

Rev.: D

Issue Date: July 2006

SY87702L

Amendment: /0

SY87702L

Related parts for SY87702LHI

SY87702LHI Summary of contents

Page 1

Micrel, Inc. FEATURES ■ 3.3V power supply ■ Complies with Bellcore, ITU/CCITT and ANSI specifications for applications such as OC-1, OC-3, OC-12, OC-48*, and ATM ■ Compatible with FDDI, Gigabit Ethernet, Fibre Channel, 2X Fibre Channel, SMPTE 259 and 292, ...

Page 2

... Tape and Reel. TCLKC– 3. Pb-Free package is recommended for new designs. 2 (1) Package Range Marking Industrial SY87702LHI Industrial SY87702LHI Industrial SY87702LHG with Pb-Free bar line indicator Pb-Free Industrial SY87702LHG with Pb-Free bar line indicator Pb-Free = 25°C, DC Electricals only. A SY87702L Lead Finish ...

Page 3

Micrel, Inc. SYSTEM BLOCK DIAGRAM Optical Module RX Data Stream Carrier Detect Serial EEPROM Reference Timing (8) M9999-072706 hbwhelp@micrel.com or (408) 955-1690 TX Data Stream SY877XXL Mux/Demux TXCLK SY87702L CDR/CMU Ref Sel CD Lock SY877XXL SY877XXL Frame Programmable Detector Protocol ...

Page 4

Micrel, Inc. FUNCTIONAL BLOCK DIAGRAM RDIN+ Phase RDIN– Detector Phase/ Frequency Detector CD REFCLK+ Phase/ REFCLK– Frequency Detector Divide 10, 16, 20 not connect. M9999-072706 hbwhelp@micrel.com or (408) 955-1690 Charge VCO Pump ...

Page 5

Micrel, Inc. FUNCTIONAL DESCRIPTION Clock Recovery Clock Recovery, as shown in the block diagram, generates a clock that is at the same frequency as the incoming data bit rate at the Serial Data input. The clock is phase aligned by ...

Page 6

Micrel, Inc. FREQSEL1, ..., FREQSEL3 [Frequency Select] – TTL Inputs These inputs select the output clock frequency range, as shown in Table 2. FREQSEL1 FREQSEL2 FREQSEL3 ...

Page 7

Micrel, Inc. DESCRIPTION General The SY87702L is a complete clock and data recovery circuit, capable of dealing with NRZ data rates from 28Mbps through to 2.5Gbps. A reference PLL is used as a frequency synthesizer, both to multiply a clock ...

Page 8

Micrel, Inc. LOOP FILTER COMPONENTS PLLSN+ or PLLSW 1.2kΩ 1.0µF (X7R Dielectric) Figure 1. R1 Filter Component R 2 PLLRN+ or PLLRW 1.8kΩ 1.0µF (X7R Dielectric) Figure 2. R2 ...

Page 9

Micrel, Inc. ABSOLUTE MAXIMUM RATINGS Symbol V Power Supply Voltage CC V Input Voltage IN I ECL Output Current OUT I CML Output Current CMLOUT T Storage Temperature Range store T Operating Temperature Range A NOTE: 1. Permanent device damage ...

Page 10

Micrel, Inc. TTL DC ELECTRICAL CHARACTERISTICS 3.3V ±5%; GND = GNDA = 0V CCO CCA Symbol Parameter V Input HIGH Voltage IH V Input LOW Voltage IL I Input HIGH Current IH ...

Page 11

Micrel, Inc. EVALUATION BOARD SCHEMATIC R48, 20Ω VCC R47, 130Ω S1 VEE DIP-5 VEE VCC L3 VCCA C9 C10 HEADER 6X2 JP1 ...

Page 12

Micrel, Inc. EVALUATION BOARD I/O TERMINATION SCHEMES TCLK RCLK OUTPUTS OUTPUTS C19 J14 RCLKC– TCLKC– R26, 100Ω C20 J13 TCLKC+ RCLKC R27, 100Ω C21 J12 TCLKE– RCLKE– R30, 330Ω V ...

Page 13

Micrel, Inc. REFCLK INPUTS V CC R40, 83Ω C35 J15 REFCLK+:FORCE 1 2 R41, 125Ω C36 J16 REFCLK+: SENSE R42, 83Ω C37 J19 REFCLK–:FORCE 1 2 R43, 125Ω C38 J20 REFCLK–: SENSE ...

Page 14

Micrel, Inc. 64-PIN EPAD H QUAD FLATPACK (H64-1) Heat Dissipation PCB Thermal Consideration for 64-Pin EPAD-TQFP Package MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this data ...

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