CS2300-CP
8.5 Ratio (Address 06h - 09h) .............................................................................................................. 27
8.6 Function Configuration 1 (Address 16h) ........................................................................................ 27
8.6.1 Clock Skip Enable (ClkSkipEn) ............................................................................................. 27
8.6.2 AUX PLL Lock Output Configuration (AuxLockCfg) .............................................................. 27
8.6.3 Enable Device Configuration Registers 3 (EnDevCfg3) ........................................................ 27
8.7 Function Configuration 2 (Address 17h) ........................................................................................ 28
8.7.1 Enable PLL Clock Output on Unlock (ClkOutUnl) ................................................................. 28
8.7.2 Low-Frequency Ratio Configuration (LFRatioCfg) ................................................................ 28
8.8 Function Configuration 3 (Address 1Eh) ........................................................................................ 28
8.8.1 Clock Input Bandwidth (ClkIn_BW[2:0]) ................................................................................ 28
9. CALCULATING THE USER DEFINED RATIO .................................................................................... 29
9.1 High Resolution 12.20 Format ....................................................................................................... 29
9.2 High Multiplication 20.12 Format ................................................................................................... 29
10. PACKAGE DIMENSIONS .................................................................................................................. 30
THERMAL CHARACTERISTICS ......................................................................................................... 30
11. ORDERING INFORMATION .............................................................................................................. 31
12. REFERENCES .................................................................................................................................... 31
13. REVISION HISTORY .......................................................................................................................... 31
LIST OF FIGURES
Figure 1. Typical Connection Diagram ........................................................................................................ 5
Figure 2. Control Port Timing - I²C Format .................................................................................................. 8
Figure 3. Control Port Timing - SPI Format (Write Only) ............................................................................ 9
Figure 4. Delta-Sigma Fractional-N Frequency Synthesizer ..................................................................... 10
Figure 5. Hybrid Analog-Digital PLL .......................................................................................................... 11
Figure 6. External Component Requirements for LCO ............................................................................. 12
23
Figure 7. CLK_IN removed for > 2 LCO cycles ..................................................................................... 13
23
Figure 8. CLK_IN removed for < 2 LCO cycles but > t
...................................................................... 13
CS
Figure 9. CLK_IN removed for < t
......................................................................................................... 14
CS
Figure 10. Low bandwidth and new clock domain .................................................................................... 14
Figure 11. High bandwidth with CLK_IN domain re-use ........................................................................... 15
Figure 12. Ratio Feature Summary ........................................................................................................... 18
Figure 13. PLL Clock Output Options ....................................................................................................... 19
Figure 14. Auxiliary Output Selection ........................................................................................................ 19
Figure 15. Control Port Timing in SPI Mode ............................................................................................. 21
Figure 16. Control Port Timing, I²C Write .................................................................................................. 22
Figure 17. Control Port Timing, I²C Aborted Write + Read ....................................................................... 22
LIST OF TABLES
Table 1. PLL Input Clock Range Indicator ................................................................................................ 12
Table 2. Ratio Modifier .............................................................................................................................. 16
Table 3. Automatic Ratio Modifier ............................................................................................................. 16
Table 4. Example Audio Oversampling Clock Generation from CLK_IN .................................................. 17
Table 5. Example 12.20 R-Values ............................................................................................................ 29
Table 6. Example 20.12 R-Values ............................................................................................................ 29
DS843PP1
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