SY87813L 3.3V, 28Mbps to 1.3Gbps AnyRate® Clock and Data Recovery General Description The SY87813L is a complete clock recovery and data retiming integrated circuit for data rates from 28Mbps up to 1.3Gbps NRZ. The device is ideally suited for SONET/SDH/ATM and Fibre Channel 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 SY87813L also includes a link fault detection circuit. Datasheets and support documentation can be found on Micrel’s web site at: www.micrel.com. AnyRate® Features • 3.3V power supply • SONET/SDH/ATM compatible • Clock and data recovery from 28Mbps up to 1.3Gbps NRZ data stream; clock generation from 28MHz to 1.3GHz • 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) • Available in 32-pin EPAD-TQFP Applications • • • • • SONET/SDH/ATM OC-1 and OC-3, OC-12, OC-24 Fibre Channel, ESCON, SMPTE 259 Gigabit Ethernet/Fast Ethernet Proprietary architecture up to 1.3Gbps CEPT E-3/E-4/E-5 Markets • Telecom/Datacom • Fiber optics • Storage networks AnyRate is a registered trademark of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com November 2006 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L Ordering Information(1) Part Number Package Type Operating Range Package Marking Lead Finish SY87813LHG H32-1 Industrial SY87813LHG with Pb-Free bar-line indicator NiPdAu Pb-Free SY87813LHGTR(2) H32-1 Industrial SY87813LHG with Pb-Free bar-line indicator NiPdAu Pb-Free Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals only. 2. Tape and Reel. Pin Configuration 32-Pin EPAD-TQFP (H32-1) November 2006 2 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L Pin Description Pin Number Pin Name Pin Name 1 REFCLKSEL REFCLK Select (TTL Input). This input selects the single-ended TTL REFCLK input or the differential PECL REFCLKP/REFCLKN inputs. REFCLKSEL = HIGH selects PECL inputs. 2 3 RDINP, RDINN Serial Data Input. Differential PECL: These built-in line receiver inputs are connected to the differential receive serial data stream. An internal receive PLL recovers the embedded clock (RCLK) and data (RDOUT) information. The incoming data rate can be within one of eight frequency ranges depending upon the state of the FREQSEL pins. See “Frequency Selection” Table. 4 6 7 FREQSEL1 FREQSEL2 FREQSEL3 Frequency Select. TTL Inputs: These inputs select the output clock frequency range as shown in the “Frequency Selection” Table. 5 28 29 REFCLK, REFCLKP, REFCLKN Reference Clock. (Input): These inputs are used as the reference for the internal frequency synthesizer and the “training” frequency for the receiver PLL to keep it centered in the absence of data coming in on the RDIN inputs. REFCLK is single-ended TTL and REFCLKP and REFCLKN are differential PECL inputs selected by the REFCLKSEL pin 26 CD Carrier Detect. PECL Input: This input controls the recovery function of the Receive PLL and can be driven by the carrier detect output of optical modules or from external transition detection circuitry. When this input is HIGH, the input data stream (RDIN) is recovered normally by the Receive PLL. When this input is LOW the data on the inputs RDIN will be internally forced to a constant LOW, the data outputs RDOUT will remain LOW, the Link Fault Indicator output LFIN forced LOW and the clock recovery PLL forced to lock onto the clock frequency generated from REFCLK. 8 NC No connect. 9 10 PLLSP PLLSN Clock Synthesis PLL Loop Filter: External loop filter pins for the clock synthesis PLL. 11 GNDA Analog Ground. 12, 13 GND 15 14 PLLRP PLLRN Ground. Ground pin and exposed pad must be connected to the same ground plane. 16 TCLKSEL Clock Select. TTL Input: This input is used to select either the recovered clock of the receiver PLL (TCLKSEL = HIGH) or the clock of the frequency synthesizer (TCLKSEL = LOW) to the TCLK outputs. 18 17 TCLKP, TCLKN Clock Output (Differential PECL): The PECL 100k outputs represent either the recovered clock (TCLKSEL = HIGH) used to sample the recovered data (RDOUT) or the transmit clock of the frequency synthesizer (TCLKSEL = LOW). These outputs must be terminated with 50Ω to VCC-2V or equivalent. This applies even if these outputs are not used. 19, 22 VCCO Output Supply Voltage. Bypass with 0.1µF//0.01µF low ESR capacitors as close to VCC pins as possible.(1) 21 20 RCLKP, RCLKN Clock Output (Differential PECL): These PECL 100k outputs represent the recovered clock used to sample the recovered data (RDOUT). 24 23 RDOUTP RDOUTN Receive Data Output (Differential PECL): These PECL 100k outputs represent the recovered data from the input data stream (RDIN). This recovered data is specified against the rising edge of RCLK. These outputs must be terminated with 50Ω to VCC-2V or equivalent. This applies even if these outputs are not used. 32 25 DIVSEL1 DIVSEL2 Divider Select. TTL Inputs: These inputs select the ratio between the output clock frequency (RCLK/TCLK) and the REFCLK input frequency as shown in the “Reference Frequency Selection” Table. Clock Recovery PLL Loop Filter. External loop filter pins for the receiver PLL. Note: 1. VCC, VCCA, VCCO must be the same value. November 2006 3 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L Pin Description (continued) Pin Number Pin Name Pin Name 27 VCC 30 VCCA Analog Supply Voltage. Bypass with 0.1µF//0.01µF low ESR capacitors as close to VCC pins as possible.(1) 31 LFIN Link Fault Indicator (TTL Output): This output indicates the status of the input data stream RDIN. Active HIGH signal is indicating when the internal clock recovery PLL has locked onto the incoming data stream. LFIN will go HIGH if CD is HIGH and RDIN is within the frequency range of the Receive PLL (900ppm). Supply Voltage. Bypass with 0.1µF//0.01µF low ESR capacitors as close to VCC pins as possible.(1) Note: 1. VCC, VCCA, VCCO must be the same value. November 2006 4 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VCC) ................................... -0.5V to +4.0V Input Voltage (VIN) ........................................... -0.5V to VCC Output Current (IOUT) Continuous........................................................ ±50mA Surge .............................................................. ±100mA Lead Temperature (soldering, 20sec.) ................... +260°C Storage Temperature (Ts) ........................-65°C to +150°C Input Voltage (VCC)............................ +3.15V to +3.45V Ambient Temperature (TA) ................... –40°C to +85°C Junction Thermal Resistance(3) EPAD-TQFP (θJA) 0lfpm airflow........................................ 27.6°C/W 200lfpm airflow.................................... 22.6°C/W 500lfpm airflow.................................... 20.7°C/W DC Electrical Characteristics Symbol Parameter VCC Power Supply Voltage ICC Power Supply Current Condition Min Typ Max Units 3.15 3.3 3.45 V 120 165 mA PECL 100K DC Electrical Characteristics(4) VCC = VCCO = VCCA = 3.3V ±5%; RL = 50Ω to VCC-2V; TA = –40°C to +85°C, unless otherwise noted. Symbol Parameter Condition Min Max Units VIH Input HIGH Voltage VCC-1.165 VCC-0.880 V VIL Input LOW Voltage VOH Output HIGH Voltage VCC-1.810 VCC-1.475 V VCC-1.085 VCC-0.880 V VOL Output LOW Voltage VCC-1.830 VCC-1.620 V VOSW Output Voltage Swing 600 900 mV IIL Input LOW Current VIN = VIL (Min) Typ 750 0.5 µA TTL DC Electrical Characteristics(4) VCC = VCCO = VCCA = 3.3V ±5%; TA = –40°C to +85°C, unless otherwise noted. Symbol Parameter Condition Min VIH Input HIGH Voltage VIL Input LOW Voltage VOH Output HIGH Voltage IOH = -0.4mA VOL Output LOW Voltage IOL = 4mA IIH Input HIGH Current VIN = 2.7V, VCC = Max. VIN = VCC, VCC = Max. -175 IIL Input LOW Current VIN = 0.5V, VCC = Max. -300 IOS Output Short-Circuit Current VOUT = 0V, (Max., 1 sec.) -15 Typ Max Units VCC V 0.8 V 2.0 2.0 V 0.5 V +100 µA µA µA -100 mA Notes: 1. Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. Using JEDEC standard test boards with die attach pad soldered to PCB. See www.amkor.com for additional package details. 4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. November 2006 5 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L AC Electrical Characteristics VCC = VCCO = VCCA = 3.3V ±5%; RL = 50Ω to VCC-2V; TA = –40°C to +85°C, unless otherwise noted. Symbol Parameter Condition Min fVCO VCO Center Frequency fREFCLK x Byte Rate 650 ∆fVCO VCO Center Frequency Tolerance Nominal tACQ Acquisition Lock Time tCPWH REFCLK Pulse Width HIGH 3 ns tCPWL REFCLK Pulse Width LOW 3 ns tIRFT REFCLK TTL Input Rise Time tIRFP REFCLKN, REFCLKP PECL Input Rise/Fall Time (20% to 80%) tODC Output Duty Cycle (RCLK/TCLK) tr, tf tSKEW Typ Max Units 1300 MHz 5 % 15 0.5 µs 2 ns 1.0 ns 45 55 % of UI PECL Output Rise/Fall Time (20% to 80%) 100 400 ps Recovered Clock Skew -200 +200 ps tDV Data Valid 1/(2xfRCLK) -200 ps tDH Data Hold 1/(2xfRCLK) -200 ps Timing Waveforms November 2006 6 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L Functional Block Functional Description The loop filter transfer function is optimized to enable the PLL to track the jitter, yet tolerate the minimum transition density expected in a received SONET data signal. Lock Detect The SY87813L contains a link fault indication circuit, which monitors the integrity of the serial data inputs. If the recovered serial data from RDIN is at the correct data rate (within 900ppm of the synthesizer frequency), the Link Fault Indicator (LFIN) output will then be asserted HIGH indicating an in-lock condition and will remain HIGH as long as this condition is met. In the event that the recovered serial data is not at the correct data rate (greater than 900ppm difference from the synthesizer frequency), then LFIN output will go LOW indicating an out-of-lock condition. This condition will force the Clock and Data Recovery PLL (CDR) to lock onto the synthesizer frequency until it is within the correct frequency range (less than 900ppm difference from the synthesizer frequency). Once the CDR is within the correct frequency range, it will again lock onto the RDIN input. 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 a PLL so that it samples the data in the center of the data eye pattern. The phase relationship between the edge transitions of the data and those of the generated clock are compared by a phase/frequency detector. Output pulses from the detector indicate the required direction of phase correction. These pulses are smoothed by a filter. The output of the loop filter controls the frequency of the Voltage Controlled Oscillator (VCO), which generates the recovered clock. Frequency, stability, without incoming data, is guaranteed by an alternate reference input (REFCLK or REFCLKP/N) that the PLL locks onto when data is lost. If the frequency of the incoming signal varies by greater than approximately 900ppm with respect to the synthesizer frequency, the PLL will be declared out of lock, and the PLL will lock to the reference clock. November 2006 7 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L Frequency Selection Table(1) FREQSEL1 FREQSEL2 FREQSEL3 fVCO/fRCLK fRCLK (MHz) 0 0 0 1 650 - 1300 0 0 1 2 325 - 650 0 1 0 4 163 - 325 0 1 1 6 109 - 216 1 0 0 8 82 - 162 1 0 1 12 55 - 108 1 1 0 16 41 - 81 1 1 1 24 28 - 54 Note: 1. SY87813L operates from 28MHz to 1300MHz. Reference Frequency Selection DIVSEL1 DIVSEL2 fRCLK/fREFCLK 0 0 8 0 1 10 1 0 16 1 1 20 Loop Filter Components(2) R5 = 350Ω C3 = 1.0µF (X7R Dielectric) R6 = 680Ω C4 = 1.0µF (X7R Dielectric) Note: 2. Suggested values. Values may vary for different applications. November 2006 8 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L Application Example AC-Coupled I/O November 2006 9 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L Application Example DC-Coupled I/O Related Product and Support Documentation Part Number Function Data Sheet Link ® SY87701AL 3.3V, 28Mbps to 1.3Gbps AnyRate Clock and Data Recovery www.micrel.com/product-info/products/sy87701al.shtml HBW Solutions New Products and Applications www.micrel.com/product-info/products/solutions.shtml November 2006 10 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L Bill of Materials (AC-Coupled) Item C6 Part Number 293D685X0025B2T Manufacturer Description Qty. (1) 6.8µF, 25V, Tantalum Capacitor, Size B (1) Vishay 1 C7 VJ206Y103JXJAT Vishay 0.01µF Ceramic Capacitor, Size 1206, X7R Dielectric 1 C10, C11 VJ0603Y105JXJAT Vishay(1) 1.0µF Ceramic Capacitor, Size 0603, X7R Dielectric 2 C12-C15, C18, C19, C27, C28 VJ0402Y104JXJAT Vishay(1) 0.1µF Ceramic Capacitor, Size 0402, X7R Dielectric 8 C20-C26 VJ0402Y104JXJAT Vishay(1) 0.01µF Ceramic Capacitor, Size 0402, X7R Dielectric 7 D1 P301-ND D2 P300-ND/P301-ND J2, J3, J4, J6 111-0702-001 Johnson Components(3) J5 BLM21A102F Murata(4) Q1 459-2598-5-ND R1 CRCW04023500F Vishay(1) CRCW04026800F (1) 680Ω Resistor, 2%, Size 0402 1 (1) R2 Panasonic (2) Vishay(1) NTE(5) Vishay LED Diode, T-1 3/4, Red Clear 1 T-1 3/4, Red LED 1 Red, Insulated Thumb Nut Binding Post (Jumped Together) 4 Black, Insulated Thumb Nut Binding Post, GND (Jumped to VEE) 1 2N2222A Buffer/Driver Transistor, NPN 1 350Ω Resistor, 2%, Size 0402 1 R3–R10 CRCW04021001F Vishay 1kΩ Pull-up Resistor, 2%, Size 0402 8 R11-R16, R28-R30, R32 CRCW04021820F Vishay(1) 182Ω Resistor, 2%, Size 0402 10 R21 CRCW06031300F Vishay(1) 130Ω Resistor, 2%, Size 0603 1 CRCW04021820F (1) 12.1kΩ Resistor, 2%, Size 0402 1 (1) R22 Vishay R23, R24 CRCW04021300F Vishay 130Ω Resistor, 2%, Size 0402 2 R25, R26 CRCW04022825F Vishay(1) 82Ω Resistor, 2%, Size 0402 2 (1) 0Ω Resistor, 2%, Size 0402 1 (1) 50Ω Resistor, 2%, Size 0402 1 End Launch SMA Jack 10 Solder Jump Option 6 R27 CRCW0402OOR0F R31 CRCW04025000F SMA1SMA10 142-0701-851 Vishay Vishay Johnson Components(3) SP1-SP6 CTS (6) SW1 CT2068-ND 8-Position, Top Actuated Slide Dip Switch 1 U1 SY87813L Micrel, Inc.(7) Low-Power 3.3V 28Mbps to 1300Mbps AnyRate® Clock and Data Recovery 1 U2 SY89322V Micrel, Inc.(7) 3.3/5V Dual LVTTL/LVCMOS-to-Differential LVPECL Translator 1 Notes: 1. Vishay: www.vishay.com. 2. Panasonic: www.panasonic.com. 3. Johnson Components: www.johnson-components.com. 4. Murata: www.murata.com. 5. NTE: www.nte.com. 6. CTS: www.cts.com. 7. Micrel, Inc: www.micrel.com. November 2006 11 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L Bill of Materials (DC-Coupled) Item C6 Part Number 293D685X0025B2T Manufacturer Description Qty. (1) 6.8µF, 25V, Tantalum Capacitor, Size B (1) Vishay 1 C7 VJ206Y103JXJAT Vishay 0.01µF Ceramic Capacitor, Size 1206, X7R Dielectric 1 C10, C11 VJ0603Y105JXJAT Vishay(1) 1.0µF Ceramic Capacitor, Size 0603, X7R Dielectric 2 C12-C15, C18, C19, C27, C28, C29 VJ0402Y104JXJAT Vishay(1) 0.1µF Ceramic Capacitor, Size 0402, X7R Dielectric 8 C20-C26 VJ0402Y104JXJAT Vishay(1) 0.01µF Ceramic Capacitor, Size 0402, X7R Dielectric 7 LED Diode, T-1 3/4, Red Clear 1 T-1 3/4, Red LED 1 D1 P301-ND Panasonic (2) (1) D2 P300-ND/P301-ND J2, J3, J4, J6 111-0702-001 Johnson Components(3) Red, Insulated Thumb Nut Binding Post (Jumped Together) 4 J5 BLM21A102F Johnson Components(3) Black, Insulated Thumb Nut Binding Post, GND (Jumped to VEE) 1 Q1 459-2598-5-ND R1 CRCW04023500F Vishay NTE(5) 2N2222A Buffer/Driver Transistor, NPN 1 (1) 350Ω Resistor, 2%, Size 0402 1 (1) Vishay R2 CRCW04026800F Vishay 680Ω Resistor, 2%, Size 0402 1 R3–R10 CRCW04021001F Vishay(1) 1kΩ Pull-up Resistor, 2%, Size 0402 8 R15, R16, R30, R32 CRCW04021820F Vishay(1) 182Ω Resistor, 2%, Size 0402 10 R21 CRCW06031300F Vishay(1) 130Ω Resistor, 2%, Size 0603 1 CRCW04021820F (1) 12.1kΩ Resistor, 2%, Size 0402 1 (1) R22 Vishay R23, R24 CRCW04022825F Vishay 82Ω Resistor, 2%, Size 0402 2 R27 CRCW0402OOR0F Vishay(1) 0Ω Resistor, 2%, Size 0402 1 50Ω Resistor, 2%, Size 0402 1 End Launch SMA Jack 10 Solder Jump Option 6 R31 CRCW04025000F SMA1SMA10 142-0701-851 (1) Vishay Johnson Components(3) SP1-SP6 SW1 CT2068-ND CTS (6) 8-Position, Top Actuated Slide Dip Switch (7) U1 SY87813L Micrel, Inc. U2 SY89322V Micrel, Inc.(7) 1 ® Low-Power 3.3V 28Mbps to 1300Mbps AnyRate Clock and Data Recovery 1 3.3/5V Dual LVTTL/LVCMOS-to-Differential LVPECL Translator 1 Notes: 5. Vishay: www.vishay.com. 6. Panasonic: www.panasonic.com. 7. Johnson Components: www.johnson-components.com. 8. Murata: www.murata.com. 5. NTE: www.nte.com. 6. CTS: www.cts.com. 7. Micrel, Inc: www.micrel.com. November 2006 12 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. Appendix A SY87813L 6. Layout and General Suggestions 1. 2. 3. 4. 5. Establish controlled impedance stripline, microstrip, or coplanar construction techniques. Signal paths should have approximately the same width as the device pads. All differential paths are critical timing paths, where skew should be matched to within ±10ps. Signal trace impedance should not vary more than ±5%. If in doubt, perform TDR analysis of all high-speed signal traces. Maintain compact filter networks as close to filter pins as possible. Provide ground plane relief under filter path to reduce stray capacitance. Be careful of crosstalk coupling into the filter network. November 2006 7. 8. 13 Maintain low jitter on the REFCLK input. Isolate the XTAL oscillator from power supply noise by adequately decoupling. Keep XTAL oscillator close to device, and minimize capacitive coupling from adjacent signals. Higher speed operation may require use of fundamental-tone (third-overtone typically has more jitter) crystal-based oscillator for optimum performance. Evaluate and compare candidates by measuring TXCLK jitter. All unused outputs must be terminated. To conserve power, unused PECL outputs can be terminated with a 1kΩ resistor to VEE. M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L Package Information 32-Pin EPAD-TQFP (Die Up) (H32-1) November 2006 14 M9999-112806-B [email protected] or (408) 955-1690 Micrel, Inc. SY87813L PCB Thermal Consideration for 32-Pin EPAD-TQFP Package Notes: 1. Package meets Leve 2 moisture sensitivity classification and is shipped in dry-pack form. 2. Exposed pad must be soldered to a ground for proper thermal management. MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2006 Micrel, Incorporated. November 2006 15 M9999-112806-B [email protected] or (408) 955-1690