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PCM5310PAPR Datasheet(PDF) 71 Page - Texas Instruments |
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PCM5310PAPR Datasheet(HTML) 71 Page - Texas Instruments |
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71 / 103 page  Register 91 (5Bh) Registers 92 and 93 (5Ch and 5Dh) PCM5310 www.ti.com ............................................................................................................................................................................................ SLES244 – FEBRUARY 2009 REG HEX DESCRIPTION B7 B6 B5 B4 B3 B2 B1 B0 91 5Bh Digital soft mute for ADC34 RSV FS34 RSV RSV RSV RSV AMU4 AMU3 FS34: Sampling Rate Selection for ADC34 This bit sets the ADS34 sampling rate. FS34 must be set to '1' when the sampling rate is greater than 48 kHz. Default value: 0 0 fS ≤ 48 kHz (default) 1 fS > 48 kHz AMU4: Digital Mute Control for ADC34, R-Channel AMU3: Digital Mute Control for ADC34, L-Channel The PCM5310 can independently mute the DAC digital input data to a zero level when AMU4 and AMU3 = '1'. These settings take precedence over the attenuation level settings of bits AAT3[7:0] and AAT4[7:0] in registers 92 and 93. The analog outputs may have audible zipper noise while changing levels. This noise can be reduced by selecting zero-crossing detection (Register 90, AZ34). Default value: 0 0 Mute disabled (default) 1 Mute enabled REG HEX DESCRIPTION B7 B6 B5 B4 B3 B2 B1 B0 92 5Ch Digital attenuation level setting for ADC34 L-channel AAT3[7:0] 93 5Dh Digital attenuation level setting for ADC34 R-channel AAT4[7:0] AAT3[7:0]: Digital Attenuation Setting for ADC34, L-Channel AAT4[7:0]: Digital Attenuation Setting for ADC34, R-Channel The digital attenuator of ADC34 can be independently set from 20 dB to –100 dB in 0.5-dB steps. The ADC34 output may have audible zipper noise while changing levels. This noise can be reduced by selecting zero crossing detection (Register 90, AZ34). Default value : 1101 0111 Table 36. Digital Attenuation Level Setting for ADC34 DIGITAL ATT DIGITAL ATT DIGITAL ATT DIGITAL ATT AAT1[7:0] LEVEL AAT1[7:0] LEVEL AAT1[7:0] LEVEL AAT1[7:0] LEVEL AAT2[7:0] SETTING AAT2[7:0] SETTING AAT2[7:0] SETTING AAT2[7:0] SETTING 1111 1111 FF 20 dB 1100 0010 C2 –10.5 dB 1000 0101 85 –41 dB 0100 1000 48 –71.5 dB 1111 1110 FE 19.5 dB 1100 0001 C1 –11 dB 1000 0100 84 –41.5 dB 0100 0111 47 –72 dB 1111 1101 FD 19 dB 1100 0000 C0 –11.5 dB 1000 0011 83 –42 dB 0100 0110 46 –72.5 dB 1111 1100 FC 18.5 dB 1011 1111 BF –12 dB 1000 0010 82 –42.5 dB 0100 0101 45 –73 dB 1111 1011 FB 18 dB 1011 1110 BE –12.5 dB 1000 0001 81 –43 dB 0100 0100 44 –73.5 dB 1111 1010 FA 17.5 dB 1011 1101 BD –13 dB 1000 0000 80 –43.5 dB 0100 0011 43 –74 dB 1111 1001 F9 17 dB 1011 1100 BC –13.5 dB 0111 1111 7F –44 dB 0100 0010 42 –74.5 dB 1111 1000 F8 16.5 dB 1011 1011 BB –14 dB 0111 1110 7E –44.5 dB 0100 0001 41 –75 dB 1111 0111 F7 16 dB 1011 1010 BA –14.5 dB 0111 1101 7D –45 dB 0100 0000 40 –75.5 dB 1111 0110 F6 15.5 dB 1011 1001 B9 –15 dB 0111 1100 7C –45.5 dB 0011 1111 3F –76 dB 1111 0101 F5 15 dB 1011 1000 B8 –15.5 dB 0111 1011 7B –46 dB 0011 1110 3E –76.5 dB 1111 0100 F4 14.5 dB 1011 0111 B7 –16 dB 0111 1010 7A –46.5 dB 0011 1101 3D –77 dB 1111 0011 F3 14 dB 1011 0110 B6 –16.5 dB 0111 1001 79 –47 dB 0011 1100 3C –77.5 dB 1111 0010 F2 13.5 dB 1011 0101 B5 –17 dB 0111 1000 78 –47.5 dB 0011 1011 3B –78 dB 1111 0001 F1 13 dB 1011 0100 B4 –17.5 dB 0111 0111 77 –48 dB 0011 1010 3A –78.8 dB Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 71 Product Folder Link(s): PCM5310 |
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