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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AT83SND2CMP3B датащи(PDF) 101 Page - ATMEL Corporation |
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AT83SND2CMP3B датащи(HTML) 101 Page - ATMEL Corporation |
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101 / 241 page  101 4341F–MP3–03/06 AT8xC51SND2C/MP3B 15.3.3 Precharge Control The power up of the circuit can be performed independently for several blocks. The sequence flow starts by setting to High the block specific fastcharge control bit and subsequently the asso- ciated power control bit. Once the power control bit is set to High, the fast charging starts. This action begins a user controlled fastcharge cycle. When the fastcharge period is over, the user must reset the associated fastcharge bit and the block is ready for use. If a power control bit is cleared a new power up sequence is needed. The several blocks with independent power control are identified in Table 15-29. The table describes the power on control and fastcharge bits for each block. Table 15-29. Precharge and Power Control Note: Note that all block can be precharged simultaneously. Powered up block Power on control bit Precharge Control Bit Vref & Vcm generator ONMSTR PRCHARGE (reg 12; bit 1) Left line in amplifier ONLNIL PRCHARGELNIL Right line in amplifier ONLNIR PRCHARGELNIR Left line out amplifier ONLNOL PRCHARGELNOL Right line out amplifier ONLNOR PRCHARGELNOR Left D-to-A converter ONDACL Not needed Right D-to-A converter ONDACR Not needed Auxiliary input amplifier ONAUXIN PRCHARGEAUXIN PA Driver output ONPADRV PRCHARGEPADRV |
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