Universal Programmable Clock Generator (UPCG)
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1 Universal Programmable Clock Generator (UPCG) Features Spread Spectrum, VCXO, and Frequency Select Input frequency range: Crystal: 8 30 MHz CLKIN: MHz Output frequency: LVCMOS: MHz Integrated phase-locked loop Low jitter, high accuracy outputs 3.3V operation 8-pin SOIC package Benefits Make inventory of only one device, CY22800, to use in various applications such as HDTV, STB, DVDR, etc. Multiple predefined configurations that can be programmed into a single chip Eliminates the need for expensive and difficult to use higher-order crystal High-performance PLL tailored for multiple applications Meets critical timing requirements in complex system designs Enables application compatibility Allows up to three different frequency selects Logic Block Diagram Pin Configuration XIN/CLKIN XOUT VCXO OSC FS2 FS1 FS0 Q Φ VCO P PLL (with modulation control) OUTPUT DIVIDER CLKC CLKB CLKA XIN/CLKIN VDD FS0/VCXO VSS CY pin SOIC XOUT CLKC/FS2/VSS CLKA/FS0 CLKB/FS1 VDD VSS Pin Description Name Pin Number Description XIN 1 Reference Input; Crystal or External Clock VDD 2 3.3V Voltage Supply FS0/VCXO 3 Frequency Select 0/VCXO Analog Control Voltage [1] VSS 4 Ground CLKB/FS1 5 Clock Output B/Frequency Select 1 [1] CLKA/FS0 6 Clock Output A/Frequency Select 0 [1] CLKC/FS2/VSS 7 Clock Output C/Frequency Select 2/VSS [1] XOUT 8 Reference Output (No Connect when the reference is a clock) Note 1. Pin definition changes for different configurations. Refer to the specific one-page data sheet for more details. Cypress Semiconductor Corporation 198 Champion Court San Jose, CA Document #: Rev. ** Revised July 14, 2006
2 General Description The CY22800 is a multi-function clock generator that supports various applications in consumer and communications markets. The device uses the Cypress proprietary PLL along with Spread Spectrum and VCXO technology to make it one of the most versatile clock synthesizer in the market place. The CY22800 is a field-programmable synthesizer that can be programmed using an easy-to-use programmer dongle, CY36800, with one of many predefined configuration files for fast sample generation of prototype builds. The CY22800 is a reprogrammable device that can be programmed up to five thousand times. The latest configurations available for this device are summarized in Table 1. Spread Spectrum Clock Generation (SSCG) The CY22800 is capable of generating Spread Spectrum Clocks (SSCG) for the purpose of reducing EMI found in today s high-speed digital electronic systems. The device uses proprietary Spread Spectrum Clock (SSC) technology to synthesize and modulate the frequency of the input clock. By modulating the frequency of the clock, the measured EMI at the fundamental and harmonic frequencies is greatly reduced. This reduction in radiated energy can significantly reduce the cost of complying with regulatory agency (EMC) requirements and improve time-to-market without degrading system performance. The CY22800 uses a preprogrammed configuration of memory arrays to synthesize output frequency and offers eight different spread percentages (refer to Table 1 Code numbers -015 to -022), and an additional option to turn the spread on and off. For the above-mentioned configurations, the modulation frequency varies with the reference frequency as follows: f ref f mod = 1000 VCXO One of the key components of the CY22800 device is the VCXO. The VCXO is used to pull the reference crystal higher or lower in order to lock the system frequency to an external source. This is ideal for applications where the output frequency needs to track along with an external reference frequency that is constantly shifting. A special pullable crystal must be used in order to have adequate VCXO pull range. Pullable Crystal specifications are included in this data sheet. VCXO Profile Figure 1 shows an example of what a VCXO profile looks like. The analog voltage input is on the X-axis and the PPM range is on the Y-axis. An increase in the VCXO input voltage results in a corresponding increase in the output frequency. This has the effect of moving the PPM from a negative to positive offset. Figure 1. VCXO Profile Tuning [ppm] VCXO input [V] Document #: Rev. ** Page 2 of 8
3 Table 1. CY22800 Configurations Document #: Rev. ** Page 3 of 8
4 Cypress offers a wide range of programmable clock synthesizers that can be used to generate any other frequencies not covered by the CY Table 2 summarizes all Cypress programmable devices including CY Table 2. Cypress Programmable Clocks [2] Part # No. of PLL Input Freq. Output Freq. Package No. of Outputs Spread Spectrum VCXO CY SOIC up to 3 Yes Yes No CY TSSOP up to 6 No No No CY TSSOP up to 6 No No Yes CY SOIC/TSSOP up to 2 Yes No No CY TSSOP up to 6 Yes No No CY241V / / SOIC up to 2 No Yes No CY TSSOP up to 6 No No No CY SOIC up to 3 No No No CY TSSOP up to 6 No No Yes CY22394/ TSSOP up to 5 No No No CY22388/89/ /20-TSSOP, 32-QFN up to 8 No Yes No I 2 C Note 2. The CY3672 programmer can be used to program all Cypress chips. Refer to the CY3672 data sheet for programming procedures. Document #: Rev. ** Page 4 of 8
5 Absolute Maximum Conditions Parameter Description Min. Max. Unit V DD Supply Voltage V T S Storage Temperature C T J Junction Temperature 125 C Digital Inputs V SS 0.3 V DD V Digital Outputs referred to V DD V SS 0.3 V DD V Electro-Static Discharge 2 kv Recommended Operating Conditions Parameter Description Min. Typ. Max. Unit V DD Operating Voltage V T A Ambient Temperature 0 70 C C LOAD Max. Load Capacitance on the CLK output 15 pf f [3] REF Reference Frequency MHz t PU Power-up time for all VDDs to reach minimum specified voltage (power ramps must be monotonic) ms Pullable Crystal Specifications for VCXO Application ONLY Parameter Name Min. Typ. Max. Unit C LNOM Crystal Load Capacitance 14 pf R 1 Equivalent Series Resistance 25 Ω R 3 /R 1 Ratio of Third Overtone Mode ESR to Fundamental Mode ESR. Ratio used 3 because typical R 1 values are much less than the maximum spec DL Crystal Drive Level. No external series resistor assumed mw F 3SEPHI Third overtone separation from 3*F NOM (High Side) 300 ppm F 3SEPLO Third overtone separation from 3*F NOM (Low Side) 150 ppm C0 Crystal shunt capacitance 7 pf C0/C1 Ratio of Shunt to motional capacitance C 1 Crystal motional capacitance pf Recommended Crystal Specifications for ALL other Applications Parameter Name Description Min. Typ. Max. Unit F NOM Nominal Crystal Frequency Parallel resonance, fundamental mode, and 8 30 MHz AT cut C LNOM Nominal Load Capacitance 12 pf R 1 Equivalent Series Resistance Fundamental mode Ω (ESR) DL Crystal Drive Level No external series resistor assumed mw Note 3. Configuration dependent, see the one-page document. Document #: Rev. ** Page 5 of 8
6 DC Electrical Specifications Parameter Name Description Min. Typ. Max. Unit I OH Output High Current V OH = V DD 0.5, V DD = 3.3V (source) ma I OL Output Low Current V OL = 0.5, V DD = 3.3V (sink) ma C IN1 Input Capacitance All input pins except XIN and XOUT 7 pf C IN2 Input Capacitance XIN and XOUT pins 24 pf I IH Input High Current V IH = V DD 5 10 µa I IL Input Low Current V IL = 0V 50 µa f XO VCXO Pullability Range ±150 ppm V VCXO VCXO Input Range 0 V DD V V IH Input High Voltage CMOS levels, 70% of V DD 0.7 V DD V IL Input Low Voltage CMOS levels, 30% of V DD 0.3 V DD AC Electrical Characteristics (V DD = 3.3V) Parameter Name Description Min. Typ. Max. Unit DC Output Duty Cycle Duty Cycle is defined in Figure 3, 50% of V DD % t 3 Rising Edge Slew Rate Output Clock Rise Time, 20% - 80% of V DD V/ns t 4 Falling Edge Slew Rate Output Clock Fall Time, 80% - 20% of V DD V/ns t 10 PLL Lock Time 3 ms Test Circuit Figure 2. Test Circuit Diagram Figure 4. Rise and Fall Time Definitions V DD 0.1µF OUTPUTS CLKout C LOAD t3 80% t4 CLK 20% GND Figure 3. Duty Cycle Definition; DC = t2/t1 t1 t2 CLK 50% 50% Document #: Rev. ** Page 6 of 8
7 Ordering Information Ordering Code Package Type Operating Range Operating Voltage CY22800FXC 8-Pin SOIC Commercial 3.3V Package Diagram Figure 5. 8-Lead (150-Mil) SOIC S *C All products and company names mentioned in this document may be the trademarks of their respective holders. Document #: Rev. ** Page 7 of 8 Cypress Semiconductor Corporation, The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
8 Document History Page Document Title: CY22800 Universal Programmable Clock Generator (UPCG) Document Number: REV. ECN NO. Issue Date Orig. of Change ** See ECN KKVTMP New data sheet Description of Change Document #: Rev. ** Page 8 of 8
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2.5V or 3.3V, 200 MHz, 9-Output Zero Delay Buffer
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SERIALLY PROGRAMMABLE CLOCK SOURCE. Features
DATASHEET ICS307-02 Description The ICS307-02 is a versatile serially programmable clock source which takes up very little board space. It can generate any frequency from 6 to 200 MHz and have a second
256K (32K x 8) Static RAM
256K (32K x 8) Static RAM Features High speed 55 ns Temperature Ranges Commercial: 0 C to 70 C Industrial: 40 C to 85 C Automotive: 40 C to 125 C Voltage range 4.5V 5.5V Low active power and standby power
ICS660 DIGITAL VIDEO CLOCK SOURCE. Description. Features. Block Diagram DATASHEET
DATASHEET ICS660 Description The ICS660 provides clock generation and conversion for clock rates commonly needed in digital video equipment, including rates for MPEG, NTSC, PAL, and HDTV. The ICS660 uses
ICS650-40A ETHERNET SWITCH CLOCK SOURCE. Description. Features. Block Diagram DATASHEET
DTSHEET ICS650-40 Description The ICS650-40 is a clock chip designed for use as a core clock in Ethernet Switch applications. Using IDT s patented Phase-Locked Loop (PLL) techniques, the device takes a
ICS LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER. Description. Features. Block Diagram DATASHEET
DATASHEET ICS670-02 Description The ICS670-02 is a high speed, low phase noise, Zero Delay Buffer (ZDB) which integrates IDT s proprietary analog/digital Phase Locked Loop (PLL) techniques. Part of IDT
ICS PCI-EXPRESS CLOCK SOURCE. Description. Features. Block Diagram DATASHEET
DATASHEET ICS557-0 Description The ICS557-0 is a clock chip designed for use in PCI-Express Cards as a clock source. It provides a pair of differential outputs at 00 MHz in a small 8-pin SOIC package.
Features. Applications. Micrel Inc Fortune Drive San Jose, CA USA tel +1 (408) fax + 1 (408)
Flexible Ultra-Low Jitter Clock Synthesizer Clockworks FLEX General Description The SM802xxx series is a member of the ClockWorks family of devices from Micrel and provide an extremely low-noise timing
Low Power Multiclock Generator with VCXO AK8130AH
Low Power Multiclock Generator with VCXO Features 27MHz Crystal Input Four Frequency-Selectable Clock Outputs One 27MHz-Reference Output Selectable Clock out Frequencies: - 54.000,74.1758, 74.250MHz -
MK AMD GEODE GX2 CLOCK SOURCE. Description. Features. Block Diagram DATASHEET
DATASHEET MK1491-09 Description The MK1491-09 is a low-cost, low-jitter, high-performance clock synthesizer for AMD s Geode-based computer and portable appliance applications. Using patented analog Phased-Locked
PCI-EXPRESS CLOCK SOURCE. Features
DATASHEET ICS557-01 Description The ICS557-01 is a clock chip designed for use in PCI-Express Cards as a clock source. It provides a pair of differential outputs at 100 MHz in a small 8-pin SOIC package.
1 Mbit (128K x 8) Static RAM
1 Mbit (128K x 8) Static RAM Features Temperature Ranges Industrial: 40 C to 85 C Automotive-A: 40 C to 85 C Pin and Function compatible with CY7C1019BV33 High Speed t AA = 10 ns CMOS for optimum Speed
ICS NETWORKING CLOCK SYNTHESIZER. Description. Features. Block Diagram DATASHEET
DATASHEET Description The generates four high-quality, high-frequency clock outputs. It is designed to replace multiple crystals and crystal oscillators in networking applications. Using ICS patented Phase-Locked
PI6C PCI Express Clock. Product Features. Description. Block Diagram. Pin Configuration
Product Features ÎÎLVDS compatible outputs ÎÎSupply voltage of 3.3V ±10% ÎÎ5MHz input frequency ÎÎHCSL outputs, 0.7V Current mode differential pair ÎÎJitter 60ps cycle-to-cycle (typ) ÎÎSpread of ±0.5%,
MK3721 LOW COST 16.2 TO 28 MHZ 3.3 VOLT VCXO. Description. Features. Block Diagram DATASHEET. MK3721D is recommended for new designs.
DATASHEET MK3721 Description The MK3721 series of devices includes the original MK3721S and the new MK3721D. The MK3721D is a drop-in replacement for the MK3721S device. Compared to the earlier device,
FIELD PROGRAMMABLE DUAL OUTPUT SS VERSACLOCK SYNTHESIZER. Features VDD PLL1 PLL2 GND
DATASHEET ICS252 Description The ICS252 is a low cost, dual-output, field programmable clock synthesizer. The ICS252 can generate two output frequencies from 314 khz to 200 MHz using up to two independently
MK LOW PHASE NOISE T1/E1 CLOCK GENERATOR. Features. Description. Block Diagram DATASHEET. Pullable Crystal
DATASHEET LOW PHASE NOISE T1/E1 CLOCK ENERATOR MK1581-01 Description The MK1581-01 provides synchronization and timing control for T1 and E1 based network access or multitrunk telecommunication systems.
PI6CX201A. 25MHz Jitter Attenuator. Features
Features PLL with quartz stabilized XO Optimized for MHz input/output frequency Other frequencies available Low phase jitter less than 30fs typical Free run mode ±100ppm Single ended input and outputs
NB2879A. Low Power, Reduced EMI Clock Synthesizer
Low Power, Reduced EMI Clock Synthesizer The NB2879A is a versatile spread spectrum frequency modulator designed specifically for a wide range of clock frequencies. The NB2879A reduces ElectroMagnetic
20MHz to 134MHz Spread-Spectrum Clock Modulator for LCD Panels DS1181L
Rev 1; /0 0MHz to 13MHz Spread-Spectrum General Description The is a spread-spectrum clock modulator IC that reduces EMI in high clock-frequency-based, digital electronic equipment. Using an integrated