Cirrus-logic CS2200-OTP Manuale Utente

Copyright  Cirrus Logic, Inc. 2010(All Rights Reserved)http://www.cirrus.comFractional-N Frequency SynthesizerFeatures Delta-Sigma Fractional-N Freq

CS2200-OTP10 DS842F2example of how to determine the range of RefClk frequencies around 12 MHz to be used in order toachieve the lowest jitter PLL outp

CS2200-OTPDS842F2 115.3 Output to Input Frequency Ratio Configuration5.3.1 User Defined Ratio (RUD)The User Defined Ratio, RUD, is a 32-bit un-signed

CS2200-OTP12 DS842F2Selection of the user defined ratio from the four stored ratios is made by using the M[1:0] pins.5.3.4 Ratio Configuration Summary

CS2200-OTPDS842F2 135.4 PLL Clock OutputThe PLL clock output pin (CLK_OUT) provides a buffered version of the output of the frequency synthesizer.The

CS2200-OTP14 DS842F25.5 Auxiliary OutputThe auxiliary output pin (AUX_OUT) can be mapped, as shown in Figure 8, to one of three signals: refer-ence cl

CS2200-OTPDS842F2 155.6.2 M2 Mode Pin FunctionalityM2 usage is mapped to one of the optional special functions via the M2Config[2:0] global parameter.

CS2200-OTP16 DS842F25.7 Clock Output Stability Considerations5.7.1 Output SwitchingThe CS2200-OTP is designed such that re-configuration of the clock

CS2200-OTPDS842F2 176. PARAMETER DESCRIPTIONSAs mentioned in Section 5.1 on page 9, there are two different kinds of parameter configuration sets, Mod

CS2200-OTP18 DS842F26.1.2 Auxiliary Output Source Selection (AuxOutSrc[1:0])Selects the source of the AUX_OUT signal.Note: When set to 11, the AuxLock

CS2200-OTPDS842F2 196.3.3 Enable PLL Clock Output on Unlock (ClkOutUnl)Defines the state of the PLL output during the PLL unlock condition.6.3.4 M2 Pi

CS2200-OTPDS842F2 2TABLE OF CONTENTS1. PIN DESCRIPTION ...

CS2200-OTP20 DS842F27. CALCULATING THE USER DEFINED RATIONote: The software for use with the evaluation kit has built in tools to aid in calculating a

CS2200-OTPDS842F2 218. PROGRAMMING INFORMATIONField programming of the CS2200-OTP is achieved using the hardware and software tools included with theC

CS2200-OTP22 DS842F29. PACKAGE DIMENSIONSNotes: 1. Reference document: JEDEC MO-1872. D does not include mold flash or protrusions which is 0.15 mm ma

CS2200-OTPDS842F2 2310.ORDERING INFORMATIONThe CS2200-OTP is ordered as an un-programmed device. The CS2200-OTP can also be factory programmed forlarg

CS2200-OTP24 DS842F2Contacting Cirrus Logic SupportFor all product questions and inquiries, contact a Cirrus Logic Sales Representative. To find one n

CS2200-OTPDS842F2 3Figure 2. Delta-Sigma Fractional-N Frequency Synthesizer ...8Fi

CS2200-OTP4 DS842F21. PIN DESCRIPTIONPin Name # Pin DescriptionVD 1 Digital Power (Input) - Positive power supply for the digital and analog sections.

CS2200-OTPDS842F2 52. TYPICAL CONNECTION DIAGRAM 21GNDM2M1XTI/REF_CLKTST_INXTOCLK_OUTAUX_OUT0.1 µFVD+3.3 VM0Low-JitterTiming Reference System Microc

CS2200-OTP6 DS842F23. CHARACTERISTICS AND SPECIFICATIONS RECOMMENDED OPERATING CONDITIONSGND = 0 V; all voltages with respect to ground. (Note ?)Notes

CS2200-OTPDS842F2 7AC ELECTRICAL CHARACTERISTICSTest Conditions (unless otherwise specified): VD = 3.1 V to 3.5 V; TA = -10°C to +70°C (Commercial Gra

CS2200-OTP8 DS842F24. ARCHITECTURE OVERVIEW4.1 Delta-Sigma Fractional-N Frequency SynthesizerThe core of the CS2200 is a Delta-Sigma Fractional-N Freq

CS2200-OTPDS842F2 95. APPLICATIONS5.1 One Time ProgrammabilityThe one time programmable (OTP) circuitry in the CS2200-OTP allows for pre-configuration