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TDA8421 데이터시트(PDF) 6 Page - NXP Semiconductors |
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TDA8421 데이터시트(HTML) 6 Page - NXP Semiconductors |
6 / 26 page May 1988 6 Philips Semiconductors Product specification Hi-fi stereo audio processor; I2C bus TDA8421 Subaddress After the module address byte a second byte is used to select the functions for both channels: • CH1 - Volume left, volume right, bass, treble and switch functions • CH2 - Volume left, volume right and switch functions The subaddress SAD is stored within the TDA8421. Table 1 defines the coding of the second byte after the module address MAD. Table 1 Second byte after module address MAD Definition of 3rd byte A third byte is used to transmit data to the TDA8421. Table 2 defines the coding of the third byte after module address MAD and subaddress SAD. Table 2 Third byte after module address MAD and subaddress SAD FUNCTION 128 64 32 16 8 4 2 1 MSB LSB 7 6 54321 0 CH1 volume left 0 0 0 0 0 0 0 0 volume right 0 0 0 0 0 0 0 1 bass 0 0 0 0 0 0 1 0 treble 0 0 0 0 0 0 1 1 switch functions 0 0 0 0 1 0 0 0 CH2 volume left 0 0 0 0 0 1 0 0 volume right 0 0 0 0 0 1 0 1 switch functions 0 0 0 0 1 1 0 0 subaddress SAD FUNCTION MSB LSB 76 5 4 3 2 1 0 CH1 volume left VL1 1 1 V05 V04 V03 V02 V01 V00 volume right VR1 1 1 V15 V14 V13 V12 V11 V10 bass BA 1 1 1 1 BA3 BA2 BA1 BA0 treble TR 1 1 1 1 TR3 TR2 TR1 TR0 switch functions S1 1 1 MU EFL STL ML1 ML0 IS CH2 volume left VL2 1 1 V25 V24 V23 V22 V21 V20 volume right VR2 1 1 V35 V34 V33 V32 V31 V30 switch functions S2 1 1 1 1 EXS MH1 MH0 1 |
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