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cy2xf24 high performance lvpecl oscillator with frequency margining ? i 2 c control cypress semiconductor corporation ? 198 champion court ? san jose , ca 95134-1709 ? 408-943-2600 document number: 001-53146 rev. *e revised may 6, 2011 features low jitter crystal oscillator (xo) less than 1 ps typical root mean square (rms) phase jitter differential low-voltage positive emitter coupled logic (lvpecl) output output frequency from 50 mhz to 690 mhz frequency margining through i 2 c bus factory-configured or field-programmable integrated phase-locked loop (pll) pb-free package: 5.0 3.2 mm leadless chip carrier (lcc) supply voltage: 3.3 v or 2.5 v commercial and industrial temperature ranges functional description the cy2xf24 is a high-perform ance and high-frequency xo. it uses a cypress-proprietary low-noise pll to synthesize the frequency from an integrated cr ystal. the output frequency can be changed using the i 2 c bus serial interface, allowing easy frequency margin testing in applications. the cy2xf24 is available as a factory-configured device or as a field-programmable device. factory-configured devices are configured for general use (see standard and appli- cation-specific factory configurations ) or they can be customer specific. logic block diagram programmable configuration output divider 1 sda crystal oscillator low-noise pll 4 clk 5 clk# 2 scl i 2 c interface [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 2 of 17 pinouts figure 1. pin diagram ? 6 pin ceramic lcc 1 3 sda v ss v dd clk 6 4 2 5clk# sclk table 1. pin definitions pin name i/o type description 1sda i/oi 2 c serial data 2 sclk cmos input i 2 c serial clock 4, 5 clk, clk# lvpecl output differential output clock 6v dd power supply voltage: 2.5 v or 3.3 v 3v ss power ground [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 3 of 17 contents standard and application-specific factory configurations .................................................... 4 functional description ..................................................... 4 configuration software .................................................... 4 programming description ............................................... 4 field-programmable cy2xf24f ................................. 4 factory-configured cy2xf24 ..................................... 5 programming variables ................................................... 5 output frequencies .. .............. .............. .............. ......... 5 industrial versus commercial device performance .... 5 memory map ...................................................................... 5 serial interface protocol and timing ........................... 5 device address ........................................................... 5 data valid .................................................................... 5 data frame ................................................................. 5 acknowledge pulse ..................................................... 5 write operations ............................................................... 6 writing individual bytes ....... .............. .............. ............ 6 writing multiple bytes .................................................. 6 read operations ............................................................... 6 current address read ............ .............. .............. ......... 6 random read .............. .............. .............. ............ ....... 6 sequential read .......................................................... 6 absolute maximum conditions ....................................... 8 operating conditions ....................................................... 8 dc electrical characteristics .......................................... 8 ac electrical characteristics .. ......................................... 9 i 2 c bus timing specifications ...................................... 10 typical output characteristics ..................................... 10 measurement definitions ............................................... 12 termination circuits ....................................................... 12 ordering information ...................................................... 13 possible configurations ............................................. 13 package drawings and dimensions ............................. 14 acronyms ........................................................................ 15 document conventions ................................................. 15 units of measure ....................................................... 15 document history page ................................................. 16 sales, solutions, and legal information ...................... 17 worldwide sales and design s upport ......... .............. 17 products .................................................................... 17 psoc solutions ......................................................... 17 [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 4 of 17 functional description the cy2xf24 is a pll-based high-performance clock generator. it uses an internal crystal oscillator as a reference, and outputs one differential lvpecl clock. it has an i 2 c bus serial interface [1] , which is used to change the output frequency. the cy2xf24 comes configured for four different frequencies. at power-on, the four configur ations are transparently loaded into an internal volatile memory which, in turn, controls the pll. you can switch between the f our frequencies through the i 2 c bus. you can also configure the cy2xf24 with new output frequencies by shifting new data into the internal memory. frequency margining is a common application for this feature. one frequency is used for the st andard operating mode of the device, while additional frequencies are available for margin testing, either during product development or in-system manufacturing test. note that all configuration changes made using i 2 c are temporary and are lost when powe r is removed from the device. at power-on, the device returns to its original state. the configuration for a particular frequency is stored in a 6-byte block of memory, known as a word. the cy2xf24 has four such words, labeled ?frequency word 0? through ?frequency word 3?. an additional register byte contains a 2-bit field, which selects one of the four frequency words. by writing to this select byte, you can switch back and forth between the four programmed frequencies. the select byte can be configured to select any of the four frequency words at power on. when changing the output frequency, the frequency transition is not guaranteed to be smooth. there can be frequency excursions beyond the start frequency and the new frequency. glitches and runt pulses are possi ble, and time must be allowed for the pll to relock. if more than four frequencies are needed, the i 2 c bus can be used to change any of the four frequency words. when writing frequency words through i 2 c, you should not change the currently selected word. instea d, write one of the three unselected words before changing the select byte to select that new word. figure 2 shows how the frequency words are arranged and selected. figure 2. frequency words configuration software cypress provides cyclockwizard? software that enables users to create data values for shifting into the frequency words. this software is required because the algorithm is too complicated to be described here. the user specifies the output frequency. the software then calculates the bit stream for up to four frequency words, as outlined by the register addresses for each word seen in figure 2 . programming description the cy2xf24 is a programmable device. before being used in an application, it must be programmed with the output frequencies and other variables described in programming variables on page 5 . two different device types are available, each with its own programming flow. they are described in the following section. field-programmable cy2xf24f field programmable devices are shipped unprogrammed and must be programmed before being installed on a printed circuit board (pcb). customers use cyclockwizard? software to specify the device configurati on and generate a joint electron devices engineering council (jedec - extension .jed) programming file. programming of samples and prototype quantities is available using the cyclockwizard software along with a cy3675-clkmaker1 cyclockmaker clock programmer kit with a cy3675-lcc6a socket adapter . cypress?s value added distribution partners also provide programming services. field programmable devices are designated with an ?f? in the part number. they are intended for quick prototyping and inventory reduction. the software and programmer kit hardware can be downloaded from www.cypress.com by clicking the hyperlinks above. standard and application-spec ific factory configurations part number output frequency frequency word rms phase jitter (random) offset range jitter (typical) CY2XF24LXI625T 78.125 mhz 156.25 mhz 312.50 mhz 625.00 mhz (default) 0 1 2 3 1.875 mhz to 20 mhz 1.875 mhz to 20 mhz 1.875 mhz to 20 mhz 1.875 mhz to 20 mhz 0.37 ps 0.31 ps 0.29 ps 0.31 ps note 1. the serial interface is i 2 c bus compliant, with the following exceptio ns: sda input leakage current, sda input capacitance, sda and sclk are clamped to v dd , setup time, and output hold time. 10h ? 15h frequency word 0 pll frequency word 1 frequency word 2 frequency word 3 16h ? 1bh 1ch ? 21h 22h ? 27h select byte 40h 00 01 10 11 bits [1:0] register address sel control [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 5 of 17 factory-configured cy2xf24 for ready-to-use devices, the cy2xf24 is available with no field programming required. pre-configured devices (see standard and application-specific factory configurations ) are available for samples or orders, or a request for a custom configuration can be made. all requests are submitted to the local cypress field application engineer (fae) or sales representative. after the request is processed, the user receives a new part number, samples, and datasheet with the programmed values. this part number is used for additional sample requests and production orders. the cy2xf24 is one -time programmable (otp). programming variables output frequencies the cy2xf24 is programmed with up to four independent output frequencies, which are t hen selected using the i 2 c interface. the device can synthesize frequencies to a resolution of 1 part per million (ppm), but the actual a ccuracy of the output frequency is limited by the accuracy of the integrated reference crystal. the cy2xf24 has an output frequency range of 50 mhz to 690 mhz, but the range is not continuous. the cy2xf24 cannot generate frequencies in the ranges of 521 mhz to 529 mhz, and 596 mhz to 617 mhz. industrial versus commercial device performance industrial and commercial devices have different internal crystals. they have a potentia lly significant impact on performance levels for applications requiring the lowest possible phase noise. cyclockwizard software allows the user to select between and view the expected performance of both options. memory map five fields can be written through the i 2 c bus. four frequency words define the output frequency. as shown in ta b l e 3 , each of these words is a 6-byte field. when writing to a frequency word, all six bytes should be written. they may be written either as individual byte writes, or as a block write. the currently selected frequency word should not be wr itten to. all four words are symmetrical, meaning that a 6-byte value that is valid for one word is also valid for any of the other words, and produce the same frequency. the fifth field is the select byte, located at byte address 40h. the value written into the two least significant bits determines the active frequency word. the other bits of the byte are reserved and must be written with the values indicated in the table. users should never write to any address other than the 25 bytes described here. serial interface protocol and timing the cy2xf24 uses pins sda and sclk for an i 2 c bus that operates up to 100 kbits/se c in read or write mode. the cy2xf24 is always a slave on this bus, meaning that it never initiates a bus transaction. the basic write protocol is as follows: start bit; 7-bit device address (da); r/w bit; slave clock acknowledge (ack); 8-bit memory address (ma); ack; 8-bit data; ack; 8-bit data in ma+1 if desired; ack; 8-bit data in ma+2; ack; etc. until stop bit. the basic serial format is illus- trated in figure 4 on page 7 . device address the device address is a 7-bit valu e. the default serial interface address is 69h. data valid data is valid when the clock is high, and may only be transi- tioned when the clock is low as illustrated in figure 5 on page 7 . data frame every new data frame is indicated by a start and stop sequence, as illustrated in figure 6 on page 7 . start sequence - start frame is indicated by sda going low when sclk is high. every time a start signal is given, the next 8-bit data must be the device address (seven bits) and a r/w bit, followed by register address (eight bits) and register data (eight bits). stop sequence - stop frame is indicated by sda going high when sclk is high. a stop frame frees the bus for writing to another part on the same bus or writing to another random register address. acknowledge pulse during write mode, the cy2xf24 responds with an acknowledge (ack) pulse after every eight bits. this is accomplished by pulling the sda line low during the n*9 th clock cycle as illustrated in figure 7 on page 8 . (n = the number of bytes transmitted). after the da ta packet is sent during read mode, the master generates the acknowledge. table 2. device programming variables variable output frequency 0 output frequency 1 output frequency 2 output frequency 3 temperature range (commercial or industrial) table 3. frequency words frequency word byte addresses (hex) word select (select byte 40h) 0 10h to 15h 00 1 16h to 1bh 01 2 1ch to 21h 10 3 22h to 27h 11 table 4. register 40h: select byte bits default value (binary) name description 7:2 000000 reserved reserved. always write this value 1:0 user- defined word select selects the frequency word to determine the output frequency. 00 selects word 0; 01 selects word 1; 10 selects word 2; 11 selects word 3 [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 6 of 17 write operations writing individual bytes a valid write operation must have a full 8-bit register address after the device address word from the master, which is followed by an acknowledge bit from t he slave (sda = 0/low). the next eight bits must contain the data word intended for storage. after the data word is received, th e slave responds with another acknowledge bit (sda = 0/low), and the master must end the write sequence with a stop condition. writing multiple bytes to write more than one byte at a time, the master does not end the write sequence with a stop cond ition. instead, the master can send multiple contiguous bytes of data to be stored. after each byte, the slave responds with an acknowledge bit, just like after the first byte, and accept data until the acknowledge bit is responded to by the stop condition. when receiving multiple bytes, the cy2xf24 internally increments the register address. read operations read operations are initiated the same way as write operations except that the r/w bi t of the slave address is set to ?1? (high). there are three basic read oper ations: current address read, random read, and sequential read. current address read the cy2xf24 has an onboard address counter that retains 1 more than the address of the last word access. if the last word written or read was word ?n?, then a current address read operation would return the value stored in location ?n+1?. when the cy2xf24 receives the slave address with the r/w bit set to a ?1?, the cy2xf24 issues an acknowledge and transmits the 8-bit word. the master device does not acknowledge the transfer, but does generate a stop condition, which causes the cy2xf24 to stop transmission. random read through random read operations, the master may access any memory location. to perform this type of read operation, first the word address must be set. this is accomplished by sending the address to the cy2xf24 as part of a write operation. after the word address is sent, the master generates a start condition following the acknowledge. this terminates the write operation before any data is stored in the address, but not before the internal address pointer is set. next the master reissues the control byte with the r/w byte set to ?1?. the cy2xf24 then issues an acknowledge and transm its the 8-bit word. the master device does not acknowledge the transfer, but does generate a stop condition which causes the cy2xf24 to stop trans- mission. sequential read sequential read operations follow the same process as random reads except that the master i ssues an acknowledge instead of a stop condition after transmission of the first 8-bit data word. this action results in an incrementing of the internal address pointer, and subsequently output of the next 8-bit data word. by continuing to issue acknowledges instead of stop conditions, the master may serially read the entire contents of the slave device memory. when the internal address pointer points to the ffh register, after the next increm ent, the pointer points to the 00h register. figure 3. data transfer sequence on the serial bus sclk start condition sda stop data may address or acknowledge valid be changed condition [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 7 of 17 figure 4. data frame architecture figure 5. data valid and data transition periods figure 6. start and stop frame sda write start signal device address 7-bit r/w = 0 1 bit 8-bit register address slave 1 bit ack slave 1 bit ack 8-bit register data stop signal multiple contiguous registers slave 1 bit ack 8-bit register data (xxh) (xxh) (xxh+1) slave 1 bit ack 8-bit register data (xxh+2) slave 1 bit ack 8-bit register data (ffh) slave 1 bit ack 8-bit register data (00h) slave 1 bit ack slave 1 bit ack sda read start signal device address 7-bit r/w = 1 1 bit 8-bit register data slave 1 bit ack slave 1 bit ack stop signal sda read start signal device address 7-bit r/w = 0 1 bit 8-bit register address slave 1 bit ack slave 1 bit ack 7-bit device stop signal multiple contiguous registers master 1 bit ack 8-bit register data master 1 bit ack (xxh) (xxh) master 1 bit ack 8-bit register data (xxh+1) master 1 bit ack 8-bit register data (ffh) master 1 bit ack 8-bit register data (00h) master 1 bit ack master 1 bit ack current address read address +r/w=1 repeated start bit sda sclk data valid transition to next bit clk low clk high vih vil t su t dh sda sclk start transition to next bit stop [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 8 of 17 figure 7. frame format (device address, r/w , register address, register data) sda sclk da6 da5 da0 r/w ack ra7 ra6 ra1 ra0 ack stop start ack d7 d6 d1 d0 +++ + + + notes 2. the voltage on any input or io pin cannot exceed the power pin during power up. 3. simulated. the board is derived from the jedec multilayer standard. it measures 76 x 114 x 1.6 mm and has 4-layers of copper (2/1/1/2 oz.). the internal layers are 100% copper planes, while the top and bottom layers have 50% metalization. no vias are included in the model. 4. i dd includes ~24 ma of current that is dissipat ed externally in the output termination resistors. absolute maximum conditions parameter description condition min max unit v dd supply voltage ?0.5 4.4 v v in [2] input voltage, dc relative to v ss ?0.5 v dd +0.5 v t s temperature, storage non operating ?55 135 c t j temperature, junction ?40 135 c esd hbm electrostatic discharge (esd) protection human body model (hbm) jedec std 22-a114-b 2000 ? v ja [3] thermal resistance, junction to ambient 0 m/s airflow 64 c/w operating conditions parameter description min typ max unit v dd 3.3-v supply voltage range 3.135 3.3 3.465 v 2.5-v supply voltage range 2.375 2.5 2.625 v t pu power-up time for v dd to reach minimum specified voltage (power ramp is monotonic) 0.05 ? 500 ms t a ambient temperature (commercial) 0 ? 70 c ambient temperature (industrial) ?40 ? 85 c dc electrical characteristics parameter description condition min typ max unit i dd [4] operating supply current v dd = 3.465 v, clk = 150 mhz, output terminated ? ? 150 ma v dd = 2.625 v, clk = 150 mhz, output terminated ? ? 145 ma v oh lvpecl high output voltage v dd = 3.3 v or 2.5 v, r term = 50 to v dd ? 2.0 v v dd ? 1.15 ? v dd ? 0.75 v v ol lvpecl low output voltage v dd = 3.3 v or 2.5 v, r term = 50 to v dd ? 2.0 v v dd ? 2.0 ? v dd ? 1.625 v v od1 lvpecl output voltage swing (v oh - v ol ) v dd = 3.3 v or 2.5 v, r term = 50 to v dd ? 2.0 v 600 ? 1000 mv v od2 lvpecl output vo ltage swing (v oh - v ol ) v dd = 2.5 v, r term = 50 to v dd ? 1.5 v 500 ? 1000 mv v ocm lvpecl output common mode voltage (v oh + v ol )/2 v dd = 2.5 v, r term = 50 to v dd ? 1.5 v 1.2 ? ? v [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 9 of 17 v ols output low voltage (sda) i ol = 4 ma ? ? 0.1*v dd v v ih input high voltage 0.7*v dd ?? v v il input low voltage ? ? 0.3*v dd v i ih0 input high current (sda) input = v dd ??115 a i ih1 input high current (sclk) input = v dd ??10 a i il0 input low current (sda) input = v ss ?50 ? ? a i il1 input low current (sclk) input = v ss ?20 ? ? a c in0 [5] input capacitance (sda) ? 15 ? pf c in1 [5] input capacitance (sclk) ? 4 ? pf dc electrical characteristics (continued) parameter description condition min typ max unit notes 5. not 100% tested, guaranteed by design and characterization. 6. this parameter is specified in cyclockmaker software. 7. frequency stability is the maximum variation in frequency from f 0 . it includes initial accuracy, plus variation from temperature and supply voltage. 8. typical phase noise specs for factory programmed devices are listed in the standard and application-specific factory configurations table on page 2. ac electrical characteristics [5] parameter description condition min typ max unit f out output frequency [6] 50 ? 690 mhz fsc frequency stability, commercial devices [7] t a = 0 c to 70 c ? ? 35 ppm fsi frequency stability, industrial devices [7] t a = ?40 c to 85 c ? ? 55 ppm ag aging, 10 years ? ? 15 ppm t dc output duty cycle f <= 450 mhz, measured at zero crossing 45 50 55 % f > 450 mhz, measured at zero crossing 40 50 60 % t r , t f output rise and fall time 20% and 80% of full output swing 0.2 0.4 1.0 ns t lock startup time time for clk to reach valid frequency measured from the time v dd = v dd (min) ??10ms t lser relock time time for clk to reach valid frequency from serial bus change to select bits in register 40h, measured from i 2 c stop ??10ms t jitter( ) rms phase jitter (random) f out = 106.25 mhz (12 khz to 20 mhz) ? 1 ? ps pre-defined factory configurations [8] see note 8 ps [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 10 of 17 typical output characteristics figure 8. 2.5-v supply and termination to v dd ?1.5 v, minimum v dd and maximum t a i 2 c bus timing specifications the i 2 c bus timing specifications for part cy2xf24 are as follows [5] parameter description min max unit f sclk sclk frequency ? 100 khz t hd:sta start mode time from sda low to sclk low 4 ? s t low sclk low period 4.7 ? s t high sclk high period 4? s t su:dat input data setup (sda transition to sclk rising edge) 1000 ? ns t hd:dat input data hold (sclk falling edge to sda transition) 0 ? ns t hd:do output data hold (sclk falling edge to sda transition) 200 ? ns t sr rise time of sclk and sda ? 300 ns t sf fall time of sclk and sda ? 300 ns t su:sto stop mode time from sc lk high to sda high 4 ? s t buf stop mode to start mode 4.7 ? s 1.20 1.25 1.30 1.35 1.40 0 100 200 300 400 500 600 700 frequency (mhz) v ocm (v) 0.4 0.5 0.6 0.7 0.8 0.9 0 100 200 300 400 500 600 700 frequency (mhz) swing (v) [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 11 of 17 figure 9. 2.5-v supply and termination to v dd ?2 v, minimum v dd and maximum t a figure 10. 3.3-v supply and termination to v dd ?2 v, minimum v dd and maximum t a 0.70 0.75 0.80 0.85 0.90 0 100 200 300 400 500 600 700 frequency (mhz) v ocm (v) 0.4 0.5 0.6 0.7 0.8 0.9 0 100 200 300 400 500 600 700 frequency (mhz) swing (v) 0.4 0.5 0.6 0.7 0.8 0.9 0 100 200 300 400 500 600 700 frequency (mhz) swing (v) 1.40 1.45 1.50 1.55 1.60 0 100 200 300 400 500 600 700 frequency (mhz) v ocm (v) [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 12 of 17 measurement definitions figure 11. output dc parameters figure 12. duty cycle timing figure 13. output rise and fall time termination circuits figure 14. lvpecl termination clk v a v b clk# v od v ocm = (v a + v b )/2 clk t pw t period t dc = t pw t period clk# 20% 80% t r clk 20% 80% clk# t f clk# 50 50 50 buf clk 50 vdd - 2v (vdd = 3.3v) clk# 50 50 50 buf clk 50 vdd - 2v or vdd - 1.5v (vdd = 2.5v) [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 13 of 17 some product offerings are factory-programmed customer-s pecific devices with custom ized part numbers. the possible configurations table shows the available device types, but not complete part numbers. contact your local cypress fae or sales representative for more information. possible configurations ordering code definitions ordering information part number configuration package description product flow pb-free cy2xf24flxct field-programmable 6-pin ceramic lcc surface mount device (smd) - tape and reel commercial, 0c to 70c cy2xf24flxit field-programmable 6-pin ceramic lc c smd - tape and reel industrial, ?40c to 85c CY2XF24LXI625T [9] field-programmable 6-pin ceramic lcc smd - tape and reel industrial, ?40c to 85c part number [10] configuration package description product flow pb-free cy2xf24lxcxxxt factory-configured 6-pin ceramic lc c smd - tape and reel commercial, 0c to 70c cy2xf24lxixxxt factory-configured 6- pin ceramic lcc smd - tape and reel industrial, ?40c to 85c cy base part number 2xf24 company id : cy = cypress f field programmable device 6-pin lcc package lx c/i c = commercial i = industrial t tape and reel xxx custom part configuration code notes 9. device configuration details are described in the standard and application-specific factory configurations table on page 2. 10. ?xxx? indicates factory programmed parts based on customer spec ific configuration. for more details, contact your local cypr ess fae or sales representative. [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 14 of 17 package drawings and dimensions figure 15. 6-pin 3.2 5.0 mm ceramic lcc lz06a . 001-10044-*a [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 15 of 17 acronyms document conventions units of measure table 5. acronyms used in this document acronym description esd electrostatic discharge fae field application engineer hbm human body model jedec joint electron devices engineering council lcc leadless chip carrier lvds low-voltage differential signaling oe output enable pcb printed circuit board pll phase-locked loop rms root mean square xo crystal oscillator symbol unit of measure c degree celsius s micro seconds a micro amperes ma milli amperes mm milli meter ms milli seconds mv milli volts khz kilo hertz mhz mega hertz ns nano seconds pf pico farad ps pico seconds ppm parts per million vvolts wwatts %percent ohms [+] feedback
cy2xf24 document number: 001-53146 rev. *e page 16 of 17 document history page document title: cy2xf24 high performance lvpecl oscillator with frequency margining ? i 2 c control document number: 001-53146 revision ecn orig. of change submission date description of change ** 2704379 kvm/pyrs 05/11/09 new datasheet *a 2718898 wwz 06/15/09 minor ecn to post datasheet to external web *b 2761926 kvm 09/10/09 revised maximum output rise and fall times *c 2896548 kvm 03/19/10 moved parts with ?xxx? into new table, possible configurations updated package diagram *d 2973338 cxq 07/08/10 added standard and application-spec ific factory configurations table on page 2. added phase jitter specs for pre-defined configurations into the ac electrical specifcations table (note 8 refers users to the new table on page 2 for typical specs). added CY2XF24LXI625T device to the ordering information table and added note 9 to reference the configurat ion description of the new device. changed all references to cyberclocksonline software to cyclockwizard. removed section on phase noise vs jitter sw optimization. changed description of word select feature from default word 0 to user-defined. *e 3183855 bash 05/06/11 updated template as per current cypress standards. added units table. changed status from preliminary to final. [+] feedback
document number: 001-53146 rev. *e revised may 6, 2011 page 17 of 17 all products and company names mentioned in this document may be the trademarks of their respective holders. cy2xf24 ? cypress semiconductor corporation, 2009-2011. the information contained herein is subject to change without notice. cypress s emiconductor 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 wi th 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. any source code (software and/or firmware) is owned by cypress semiconductor corporation (cypress) and is protected by and subj ect to worldwide patent protection (united states and foreign), united states copyright laws and internatio nal treaty provisions. cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the cypress source code and derivative works for the sole purpose of creating custom software and or firmware in su pport of licensee product to be used only in conjunction with a cypress integrated circuit as specified in the applicable agreement. any reproduction, modification, translation, compilation, or repre sentation of this source code except as specified above is prohibited without the express written permission of cypress. disclaimer: cypress makes no warranty of any kind, express or implied, with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. cypress reserves the right to make changes without further notice to t he materials described herein. cypress does not assume any liability arising out of the application or use of any product or circuit described herein. cypress does not authori ze 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? prod uct in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies cypress against all charges. use may be limited by and subject to the applicable cypress software license agreement. sales, solutions, and legal information worldwide sales and design support cypress maintains a worldwide network of offices, solution center s, manufacturer?s representatives, and distributors. to find t he office closest to you, visit us at cypress locations . products automotive cypress.co m/go/automotive clocks & buffers cypress.com/go/clocks interface cypress. com/go/interface lighting & power control cypress.com/go/powerpsoc cypress.com/go/plc memory cypress.com/go/memory optical & image sensing cypress.com/go/image psoc cypress.com/go/psoc touch sensing cyp ress.com/go/touch usb controllers cypress.com/go/usb wireless/rf cypress.com/go/wireless psoc solutions psoc.cypress.com/solutions psoc 1 | psoc 3 | psoc 5 [+] feedback

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