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ALC5642R-VF-CG 数据表(PDF) 23 Page - Realtek Semiconductor Corp. |
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ALC5642R-VF-CG 数据表(HTML) 23 Page - Realtek Semiconductor Corp. |
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23 / 156 page  ALC5642-VF Datasheet Multi-Channel Audio Hub/CODEC with embedded Voice DSP and SounzReal TM Digital Sound Effect 11 Rev. 0.93 7. Function Description 7.1. Power There are different power types in ALC5642. DBVDD is for digital I/O power, DCVDD is for digital core power, AVDD and DACREF are for analog power, CPVDD is for charge pump power, MICVDD is for MICBIAS power and SPKVDD is for speaker amplifier power. The power supplier limit condition are DBVDD ≧ DCVDD and SPKVDD ≧ MICVDD > AVDD = DACREF = CPVDD, AVDD ≧ DCVDD, and for the best performance, our design setting is shown as below. Table 5. Power Supply for Best Performance Power DBVDD DCVDD AVDD DACREF CPVDD MICVDD SPKVDD Setting 1.8V 1.2V 1.8V 1.8V 1.8V 3.3V 5.0V *1.2V DCVDD can be generated by internal LDO or supplied by external 1.2V power. To prevent all power down leakage, there are two settings for power supply. At these conditions, the leakage will be smaller. First setting is to power on all power pin. Second setting is to only power on SPKVDD and others are removed. The detail setting is shown as following table. Table 6. Power Supply Condition for Power Down Leakage Power DBVDD DCVDD AVDD DACREF CPVDD MICVDD SPKVDD Setting-1 Supplied Supplied (or N/A)* Supplied Supplied Supplied Supplied (or N/A)* Supplied Setting-2 N/A N/A N/A N/A N/A N/A Supplied Setting-3 Supplied Supplied (or N/A)* Supplied Supplied Supplied Supplied (or N/A)* N/A “*” means DCVDD or MICVDD can be supplied by internal LDO and need to turn off when into power down mode. |
类似零件编号 - ALC5642R-VF-CG |
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类似说明 - ALC5642R-VF-CG |
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