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STA310 数据表(PDF) 77 Page - STMicroelectronics |
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STA310 数据表(HTML) 77 Page - STMicroelectronics |
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77 / 90 page  77/90 STA310 Hardware Reset: UND Description;:. The notation, 2/0 represents 2 front speakers and no surround speakers. LPCMA_FORCE_DWS Downsampling 192 to 96KHz Address : 0x70 Type: R/W Software Reset: NC Hardware Reset: UND Description: This register selects whether downsampling is used for input streams requiring sampling frequencies of 192KHz or 176.4KHz. When ’automatic’ is selected, register is automatically updated to correspond to the new output frequency. LPCMA_DM_COEFT_0 Downmix phase coefficients 0 Address : 0x97 Type: R/W Software Reset: NC Hardware Reset: UND Description: This register sets the phase coefficients for channels mixing to Lmix. The input signal is inverted when PH_xL = ’0’ and non-inverted when ’1’. LPCMA_DM_COEFT_1 Downmix phase coefficients 1 Address: 0x98 Type: R/W Software Reset: NC Hardware Reset: UND Description: This register sets the phase coefficients for channels mixing to Rmix. The input signal is inverted when PH_xR = ’0’ and non-inverted when ’1’. LPCMA_DM_COEFT_2 Downmix gain coefficients 2 Address: 0x99 Type: R/W Software Reset: NC Hardware Reset: UND Description: This register sets the mixing gain for Lf to Lmix. See the note after register LPCMA_DM_COEFT_3 Downmix gain coefficients 3 Address : 0x9A Type: R/W Software Reset: NC Value Description 0 Downmix not applied 1 Force downmix 2/0 2 Downmix 2/0 is applied if the flags down_mix_code_validity AND stereo_playback_mode are both ’0’ in the bitstream 7654321 0 Reserved Value Bitfield Description Value 00: Automatic (if Fs = 192KHz or 176.4KHz) 01: Automatic (if Fs = 192KHz or 176.4KHz) 10: No downsampling 7 65432 1 0 0 PH_1L PH_2L PH_3L PH_4L PH_5L Reserved 7 6 543 2 1 0 PH_0R 0 PH_2R PH_3R PH_4R PH_5R Reserved 765432 1 0 COEF_0L 7654321 0 COEF_0R |
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