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STA011 数据表(PDF) 28 Page - STMicroelectronics |
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STA011 数据表(HTML) 28 Page - STMicroelectronics |
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28 / 38 page  Programming specifications STA011 28/38 6.1.4 VCO enable The internal RFVCO can also be enabled via hardware mode through the ENRFOSC pin. With the ENRFOSC pin high the software mode is disabled and the RFVCO is turned ON; with the ENRFOSC pin low the software mode is enabled, depending on the truth table described above . 6.1.5 VCO output voltage 6.1.6 Charge pump current setting Table 22. VCO enable D95 D94 Description Notes 10 Internal RFVCO Startup configuration 11 External RFLO Table 23. VCO output voltage D93 D92 Description Notes 00 Vout=1Vpp Startup configuration 01 Vout=2Vpp 10 Vout=3Vpp 11 Vout=4Vpp Table 24. Charge pump current D90 D89 D88 Description Notes 00 0 ICP=300uA … … … ……. 01 1 ICP=400uA Startup configuration . ……. 11 1 ICP=600uA |
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