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CS3308 データシート(PDF) 18 Page - Cirrus Logic |
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CS3308 データシート(HTML) 18 Page - Cirrus Logic |
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18 / 44 page  18 DS702F1 CS3308 Combining the multiple group addressing capabilities of the CS3308 (as detailed in section 5.8.2 on page 24) with the internal master control mapping abilities described above allows the configuration and direct addressing of multiple logical groups of channels across multiple CS3308 devices within a system. 5.4.2 Volume & Muting Control Implementation Figure 6 below diagrams in detail the volume and muting control architecture of the CS3308 for an arbi- trary channel ‘N’. This diagram incorporates all volume and muting control concepts presented in sections 5.4 - 5.6; it is included as a reference and will serve to corroborate the information presented in these sections. Referenced Control Register Location Master X Mask .................... “Master 1 Mask - Address 10h” on page 36 “Master 2 Mask - Address 13h” on page 37 “Master 3 Mask - Address 16h” on page 38 Limit Volume Result -96 dB to +22 dB Ch. N - Volume Register N Ch. N - ¼ dB Control Register 09h, Bit N-1 Σ Ch. N Master 2 Mask Register 13h, Bit N-1 Hardware Mute Input Pin 4 Master 1 - Mute Register 12h, Bit 1 Mute Channel N - Mute Register 0Ah, Bit N-1 Master 3 - Mute Register 18h, Bit 1 Master 2 - Mute Register 15h, Bit 1 Ch. N Master 1 Mask Register 10h, Bit N-1 Ch. N Master 3 Mask Register 16h, Bit N-1 _ + Channel N REFI REFO Input Output Σ Mask 1 Mask 2 Mask 3 Master 1 - Volume Register 11h Master 1 - ¼ dB Register 12h, Bit 0 Σ Master 2 - Volume Register 14h Master 2 - ¼ dB Register 15h, Bit 0 Σ Mask 2 Master 3 - Volume Register 17h Master 3 - ¼ dB Register 18h, Bit 0 Σ Mask 3 Mask 1 Mask 1 Mask 3 Σ Σ Mask 2 Mute Input Enable Register 0Bh, Bit 5 Mute if result is less than -96 dB. Figure 6. Volume & Muting Control Implementation |
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