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MAS3507D Datasheet(PDF) 38 Page - Micronas |
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MAS3507D Datasheet(HTML) 38 Page - Micronas |
38 / 60 page MAS 3507D PRELIMINARY DATA SHEET 38 Micronas Fig. 3–2: Digital volume matrix The fixed point gain values correspond to 20 bit 2’s complement notation. The conversion between fixed point and 2’s complement notation is done easily by the algorithms described in Section 3.2.1. Table 3–21 contains the converted gain values as used in the ’write D1 memory’ command −1 −1 −1 −1 LL LR RL RR + + left audio right audio Table 3–20: Settings for the digital volume matrix Memory location D1: $7f8 D1: $7f9 D1: $7fa D1: $7fb Name LL LR RL RR Stereo (default) −1.0 0 0 −1.0 Mono left −1.0 −1.0 0 0 Mono right 00 −1.0 −1.0 Table 3–21: Volume matrix conversion (dB into hexadecimal) Volume (in dB) Hexa decimal Volume (in dB) Hexa decimal Volume (in dB) Hexa decimal Volume (in dB) Hexa decimal Volume (in dB) Hexa decimal 0 80000 −20 F3333 −40 FEB85 −60 FFDF4 −80 FFFCC −1 8DEB8 −21 F4979 −41 FEDBF −61 FFE2D −81 FFFD1 −29A537 −22 F5D52 −42 FEFBB −62 FFE60 −82 FFFD6 −3 A5621 −23 F6F03 −43 FF180 −63 FFE8D −83 FFFDB −4AF3CD −24 F7EC8 −44 FF314 −64 FFEB5 −84 FFFDF −5 B8053 −25 F8CD5 −45 FF47C −65 FFED9 −85 FFFE3 −6BFD92 −26 F995B −46 FF5BC −66 FFEF9 −86 FFFE6 −7 C6D31 −27 FA485 −47 FF6DA −67 FFF16 −87 FFFE9 −8 CD0AD −28 FAE78 −48 FF7D9 −68 FFF2F −88 FFFEB −9 D2958 −29 FB756 −49 FF8BC −69 FFF46 −89 FFFED −10 D785E −30 FBF3D −50 FF986 −70 FFF5A −90 FFFEF −11 DBECC −31 FC648 −51 FFA3A −71 FFF6C −91 FFFF1 −12 DFD91 −32 FCC8E −52 FFADB −72 FFF7C −92 FFFF3 −13 E3583 −33 FD227 −53 FFB6A −73 FFF8B −93 FFFF4 −14 E675F −34 FD723 −54 FFBEA −74 FFF97 −94 FFFF6 −15 E93CF −35 FDB95 −55 FFC5C −75 FFFA3 −95 FFFF7 −16 EBB6A −36 FDF8B −56 FFCC1 −76 FFFAD −96 FFFF8 −17 EDEB6 −37 FE312 −57 FFD1B −77 FFFB6 −97 FFFF9 −18 EFE2C −38 FE638 −58 FFD6C −78 FFFBE −98 FFFF9 −19 F1A36 −39 FE905 −59 FFDB4 −79 FFFC5 −99 FFFFA |
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