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CS2200-OTP Datasheet(PDF) 2 Page - Cirrus Logic |
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2 / 22 page CS2200-OTP DS842PP1 2 TABLE OF CONTENTS 1. PIN DESCRIPTION ................................................................................................................................. 4 2. TYPICAL CONNECTION DIAGRAM ..................................................................................................... 5 3. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 6 RECOMMENDED OPERATING CONDITIONS .................................................................................... 6 ABSOLUTE MAXIMUM RATINGS ........................................................................................................ 6 DC ELECTRICAL CHARACTERISTICS ................................................................................................ 6 AC ELECTRICAL CHARACTERISTICS ................................................................................................ 7 4. ARCHITECTURE OVERVIEW ............................................................................................................... 8 4.1 Delta-Sigma Fractional-N Frequency Synthesizer ........................................................................... 8 5. APPLICATIONS ..................................................................................................................................... 9 5.1 One Time Programmability .............................................................................................................. 9 5.2 Timing Reference Clock Input .......................................................................................................... 9 5.2.1 Internal Timing Reference Clock Divider ................................................................................. 9 5.2.2 Crystal Connections (XTI and XTO) ...................................................................................... 10 5.2.3 External Reference Clock (REF_CLK) .................................................................................. 10 5.3 Output to Input Frequency Ratio Configuration ............................................................................. 10 5.3.1 User Defined Ratio (RUD) ..................................................................................................... 10 5.3.2 Manual Ratio Modifier (R-Mod) ............................................................................................. 11 5.3.3 Effective Ratio (REFF) .......................................................................................................... 11 5.3.4 Ratio Configuration Summary ............................................................................................... 11 5.4 PLL Clock Output ........................................................................................................................... 12 5.5 Auxiliary Output .............................................................................................................................. 13 5.6 Mode Pin Functionality ................................................................................................................... 13 5.6.1 M1 and M0 Mode Pin Functionality ....................................................................................... 13 5.6.2 M2 Mode Pin Functionality .................................................................................................... 14 5.6.2.1 M2 Configured as Output Disable .............................................................................. 14 5.6.2.2 M2 Configured as R-Mod Enable .............................................................................. 14 5.6.2.3 M2 Configured as AuxOutSrc Override ..................................................................... 14 5.7 Clock Output Stability Considerations ............................................................................................ 15 5.7.1 Output Switching ................................................................................................................... 15 5.7.2 PLL Unlock Conditions .......................................................................................................... 15 6. PARAMETER DESCRIPTIONS ........................................................................................................... 16 6.1 Modal Configuration Sets ............................................................................................................... 16 6.1.1 R-Mod Selection (RModSel[1:0]) ...........................................................................................16 6.1.2 Auxiliary Output Source Selection (AuxOutSrc[1:0]) ............................................................. 17 6.2 Ratio 0 - 3 ...................................................................................................................................... 17 6.3 Global Configuration Parameters ................................................................................................... 17 6.3.1 AUX PLL Lock Output Configuration (AuxLockCfg) .............................................................. 17 6.3.2 Reference Clock Input Divider (RefClkDiv[1:0]) .................................................................... 17 6.3.3 Enable PLL Clock Output on Unlock (ClkOutUnl) ................................................................. 18 6.3.4 M2 Pin Configuration (M2Config[2:0]) ................................................................................... 18 7. CALCULATING THE USER DEFINED RATIO .................................................................................... 19 7.1 12.20 Format .................................................................................................................................. 19 8. PROGRAMMING INFORMATION ........................................................................................................ 20 9. PACKAGE DIMENSIONS .................................................................................................................... 21 THERMAL CHARACTERISTICS ......................................................................................................... 21 10. ORDERING INFORMATION .............................................................................................................. 22 11. REVISION HISTORY .......................................................................................................................... 22 |
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