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CDCM6208V2GRGZR Datasheet(PDF) 33 Page - Texas Instruments |
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CDCM6208V2GRGZR Datasheet(HTML) 33 Page - Texas Instruments |
33 / 88 page 33 CDCM6208V2G www.ti.com SNAS682 – MARCH 2016 Product Folder Links: CDCM6208V2G Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated 10.4.2 Loop Filter Recommendations for Pin Modes The following two tables provide the internal charge pump and R3/C3 settings for pin modes. The designer can either design their own optimized loop filter, or use the suggested loop filter in the Table 5. Table 5. CDCM6208V2G Loop Filter Recommendation for Pin Mode Use Case PRI_REF SEC_REF f(PFD) (MHz) ICP (mA) Recommended External LPF Components C1 / R2 / C2 Internal LPF Components Freq (MHz) Type Freq (MHz) Type R3 (Ω) C3 (pF) 00 I/O SPI Default 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 01 I/O I2C Default 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 11 RESERVED 10 0x00 1-V2G 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x01 2-V2G 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x02 3-V2G 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x03 4-V2G 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x04 5-V2G 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x05 6-V2G 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x06 7-V2G 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x07 8-V2G 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x08 9-V2G 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x09 10-V2G 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x0A 11-V2G 25 LVCMOS 25 LVCMOS MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x0B 12-V2G X Disable 25 Crystal MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x0C 13-V2G X Disable 25 Crystal MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x0D 14-V2G X Disable 25 Crystal MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x0E 15-V2G X Disable 25 Crystal MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x0F 16-V2G X Disable 25 Crystal MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x10 17-V2G X Disable 25 Crystal MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x11 18-V2G X Disable 25 Crystal MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x12 19-V2G X Disable 25 Crystal MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x13 20-V2G X Disable 25 Crystal MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x14 21-V2G X Disable 25 Crystal MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x15 22-V2G X Disable 25 Crystal MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x16 23-V2G X Disable 25 Crystal MAN- SEC 25 2.5 200pF / 400Ω / 22nF 100 242.5 10 0x17 24-V2G 25 LVCMOS 25 Crystal MAN- SEC 6.25 4m 22pF / 860Ω / 22nF 100 242.5 |
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