Disclosed are a method and system for generating clock signal of I2S audio bus, and a dac circuit. The method includes: reading an audio file transmitted by the I2S audio bus, by a master controller; the master controller reading sampling rate, data bit length, and number of channels of the audio file, and, calculating data volume for each frame according to the data bit length and the number of channels, generating a master clock signal according to a multiplier requirement of a slave controller on the master clock signal, a frequency of the master clock signal being fs×X, wherein fs is the sampling rate, and X is a selected multiplier; and the slave controller receiving the master clock signal, and using the master clock signal as a clock source, to realize modulation and filtering for an audio digital-to-analog conversion.
METHOD AND SYSTEM FOR GENERATING CLOCK SIGNAL OF 12S AUDIO BUS, AND DAC CIRCUIT
06.02.2025
Patent
Elektronische Ressource
Englisch
IPC: | G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / H03M Codieren, Decodieren oder Codeumsetzung allgemein , CODING, DECODING OR CODE CONVERSION, IN GENERAL |
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