EV3026 SONET/SDH Clock Recovery Unit S3026 evaluation board
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Part Number EV3026 October 1999
EV3026
SONET/SDH Clock Recovery Unit
S3026 evaluation board provides flexible platform verifying operation S3026 Clock Recovery Unit (CRU). This document provides information board contents layout. should used conjunction with S3026 data sheet, which contains full technical details chips operation.
EVALUATION BOARD
S3026 board factory configured "option allowing control operating speed MODE signal (SW2) providing test point monitor LOCKDET output. Option allows operation S3026 with either on-board crystal oscillator with external oscillator connected external REFCLK I/Px connector.
Figure Evaluation Board Layout View
APPLIED MICRO CIRCUITS CORP. 6290 SEQUENCE DRIVE DIEGO, 92121 S3025/26/27 SONET/SDH CLOCK RECOVERY UNIT
AMCC
BUFFERED INPUT
SERDATOP BUFFERED OUTPUTS SERDATON
SERDATIP
AMCC S3026
SERDATIN XTAL
OUTPUTS
SERCLKOP
SERCLKON LOCKDETx DIPSWITCH OPTIONS SQUELCHN MODE
LCKREFN BYPASS
XTAL OSCILLATORx
EXTERNAL REFCLK I/Px
EV3026 SONET/SDH Clock Recovery Unit
October 1999
EVALUATION BOARD
Electrical Connections
Power Connections Terminal posts provided edge board allowing separate control voltage levels input signal termination, S3026 itself, S3026 output terminations. buffers translate between external test equipment environment other standard and/or referenced systems supply correct referenced device. separately powered output buffers allow easy connection ground inputs high performance oscilloscopes spectrum analyzers well standard serial Error Rate Testers (BERT) jitter analyzers. Table illustrates nominal input voltages VTT, VTT. options paired vertically.
These recommended outputs connection evaluation board monitoring instrumentation. Serial Clock [SERCLKOP/N] Buffered Differential PECL outputs. recovered serial clock, with rising edge SERCLKOP centered SERDATOP/ period. buffered outputs drive PECL, ECL, ground terminated instrument inputs. Driven inputs must provide termination respective reference. These recommended outputs connection evaluation board monitoring instrumentation. Note: Accurate measurement also requires removal on-board zero jumpers correct impedance matching external cabling instrumentation. Please consult AMCC appropriate in-factory reconfiguration. External Reference Clock [EXTERNAL REFCLK I/Px] input providing access Reference Clock (TTLREF) input S3026. This input allows operation other than available SONET/SDH data rates. provided crystal oscillator must removed external reference desired. This connector also used monitor provided oscillator output. Lock Detect [LOCKDET] PECL output (Test Point). addition connectors, LOCKDET output available test post monitoring with high impedance scope probe.
Table Power Connections Test Equipment Interface
Power Supply Nominal Input Voltage -2.0V 5.0V 0.0V -3.0V 0.0V -5.0V 2.0V 5.0V 0.0V
Switch
four element switch allows control static inputs S3026. (open condition switch asserts logic high assigned signal, condition asserts logic low. option controls MODE input. allows operation 622.08 Mbit/s, selects 155.52 Mbit/s. switch controls PECL input. allows S3026 recover clock from serial data stream. will force S3026 lock reference clock. LCKREFN when will also force S3026 lock reference clock. BYPASS should normal operation.
Connectors coaxial connectors provided differential serial data input/output signals output clock. additional connector provided optional external reference clock. (See Figure locations.) Serial Data [SERDATIP/N] Buffered Differential coupled PECL inputs. clock recovered from transitions these inputs. On-board termination provided, allowing proper termination PECL, ECL, ground terminated data sources. Serial Data [SERDATOP/N] Buffered Differential PECL outputs. delayed version input serial data retimed recovered serial clock. buffered outputs drive PECL, ECL, ground terminated instrument inputs. Driven inputs must provide termination respective reference.
EV3026 SONET/SDH Clock Recovery Unit
October 1999
EVALUATION BOARD
Figure S3026 Evaluation Board Schematic
EV3026 SONET/SDH Clock Recovery Unit
October 1999
EVALUATION BOARD
Table EV3026 Bill Materials
Count Component Name CC0402 Pattern 0402 Value CC0604 0603 CC0604 0603 CC0805 0805 CC0805 0805 CC0805 CC0805 0805 0805 CONN1X4PWR CRYSTAL DIP4 JP1X2 1206 JP1X2 CONN1X4PWR used dip4 f.b.
EV3026 SONET/SDH Clock Recovery Unit
October 1999
EVALUATION BOARD
Table EV3026 Bill Materials
Count Component Name MC100EL16 Pattern Value OSCTTL PWRCONX3 RC0603 0603 19.44 pwrx3 RC0603 0603 RC0603 0603 RC0603 0603 RC0805 0805 RC0805 0805 RC0805 RC0805 0805 0805 RC0805 RC0805 0805 0805 RC0805 RC0805 0805 0805 (opt) RC0805 0805
EV3026 SONET/SDH Clock Recovery Unit
October 1999
EVALUATION BOARD
Table EV3026 Bill Materials
Count Component Name Pattern Value RC0805 RES6SIPB S3026 SMA-EDGE SMA-EDGE 0805 SIP6 S3026
EV3026 SONET/SDH Clock Recovery Unit
October 1999
EVALUATION BOARD
Ordering Information
Prefix Evaluation Board Device 3026 Package TSSOP Speed Grade Mbps Blank Mbps
Prefix
XXXX
Device
Package
Speed Grade
Applied Micro Circuits Corporation 6290 Sequence Dr., Diego, 92121 Phone: (858) 450-9333 (800) 755-2622 Fax: (858) 450-9885 http://www.amcc.com
AMCC reserves right make changes products discontinue semiconductor product service without notice, advises customers obtain latest version relevant information verify, before placing orders, that information being relied current. AMCC does assume liability arising application product circuit described herein, neither does convey license under patent rights rights others. AMCC reserves right ship devices higher grade place those lower grade. AMCC SEMICONDUCTOR PRODUCTS DESIGNED, INTENDED, AUTHORIZED, WARRANTED SUITABLE LIFE-SUPPORT APPLICATIONS, DEVICES SYSTEMS OTHER CRITICAL APPLICATIONS. AMCC registered trademark Applied Micro Circuits Corporation. Copyright 1999 Applied Micro Circuits Corporation.
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