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CS43130 Datasheet(PDF) 110 Page - Cirrus Logic |
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CS43130 Datasheet(HTML) 110 Page - Cirrus Logic |
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110 / 137 page  110 DS1073F1 CS43130 7.5 Headphone and PCM Registers 6 PHCOMP_ LOWLATB Low-latency and phase-compensated filter selection 0 (Default) Low-latency is selected. 1 Phase-compensated filter is selected. 5 NOS Nonoversampling emulation mode on. When enabled, FILTER_SLOW_FASTB and PHCOMP_LOWLATB are ignored. 0 (Default) NOS emulation mode is off. 1 NOS emulation mode is on. 4:2 — Reserved 1 HIGH_PASS High-pass filter enable. 0 High-pass filter is disabled. 1 (Default) High-pass filter is selected. 0 DEEMP_ON Deemphasis filter on. 0 (Default) Deemphasis for 44.1 kHz is disabled. 1 Deemphasis for 44.1 kHz is enabled. 7.5.3 PCM Volume B Address 0x90001 R/W 76543210 PCM_VOLUME_B Default 01111000 Bits Name Description 7:0 PCM_ VOLUME_B Digital volume control registers for PCM channel B. It allows independent control of the signal level in 1/2 dB increments from 0 to –127 dB. Volume settings are decoded as shown below. The volume changes are dictated by the PCM_SZC bits. The same rule applies to PCM_VOLUME_A setting. 0000 0000 0 dB 0000 0001 –0.5 dB ... 01111000 –60 dB (Default) ... 1111 1110 –127 dB 1111 1111 Digital mute 7.5.4 PCM Volume A Address 0x90002 R/W 76543210 PCM_VOLUME_A Default 01111000 Bits Name Description 7:0 PCM_ VOLUME_A Digital volume control registers for channel A. See PCM_VOLUME_B for description. 7.5.5 PCM Path Signal Control 1 Address 0x90003 R/W 76543210 PCM_RAMP_ DOWN PCM_VOL_ BEQA PCM_SZC PCM_AMUTE PCM_ AMUTEBEQA PCM_MUTE_A PCM_MUTE_B Default 10101000 Bits Name Description 7PCM_RAMP_ DOWN Soft volume ramp-down before filter mode change. A mute is performed before filter mode change and an unmute is performed after executing the filter mode change. 0 Immediate mute is performed prior to executing a filter mode change 1 (Default) This mute and unmute is controlled by PCM_SZC. 6PCM_VOL_ BEQA PCM_VOLUME_B equals PCM_VOLUME_A. 0 (Default) Volume setting of both channels are controlled independently. 1 Volume setting of both channels are controlled by PCM_VOLUME_A. PCM_VOLUME_B is ignored. 5:4 PCM_SZC Soft ramp and zero cross control. 00 Immediate change 01 In PCM mode, zero cross change 10 (Default) Soft ramp 11 In PCM mode, soft ramp and zero crossings Bits Name Description |
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