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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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STA311B bảng dữ liệu(PDF) 70 Page - STMicroelectronics |
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STA311B bảng dữ liệu(HTML) 70 Page - STMicroelectronics |
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70 / 102 page  Configuration registers (0x77; 0x78; 0x79) STA311B 70/102 DocID024340 Rev 1 9.1 Post-scale The STA311B provides one additional multiplication after the last interpolation stage and before the distortion compensation on each channel. This is a 24-bit signed fractional multiply. The scale factor for this multiply is loaded into RAM using the same I²C registers as the biquad coefficients and the bass-management. This post-scale factor can be used in conjunction with an ADC-equipped microcontroller to perform power-supply error correction. All channels can use the channel 1 by setting the post-scale link bit. Table 14. RAM block for biquads, mixing, and bass management Index (decimal) Index (hex) Coefficient Default 0 0x00 Channel 1 - Biquad 1 C1H10 (b1/2) 0x000000 1 0x01 C1H11 (b2) 0x000000 2 0x02 C1H12 (a1/2) 0x000000 3 0x03 C1H13 (a2) 0x000000 4 0x04 C1H14 (b0/2) 0x400000 5 0x05 Channel 1 - Biquad 2 C1H20 0x000000 …… … … … 49 0x31 Channel 1 - Biquad 10 C1HA4 0x400000 50 0x32 Channel 2 - Biquad 1 C2H10 0x000000 51 0x33 C2H11 0x000000 …… … … … 99 0x63 Channel 2 - Biquad 10 C2HA4 0x4000000 100 0x64 Channel 3 - Biquad 1 C3H10 0x000000 …… … … … 399 0x18F Channel 8 - Biquad 10 C8HA4 0x400000 400 0x190 Channel 1 - Pre-scale C1PreS 0x7FFFFF 401 0x191 Channel 2 - Pre-scale C2PreS 0x7FFFFF 402 0x192 Channel 3 - Pre-scale C3PreS 0x7FFFFF …… … … … 407 0x197 Channel 8 - Pre-scale C8PreS 0x7FFFFF 408 0x198 Channel 1 - Post-scale C1PstS 0x7FFFFF 409 0x199 Channel 2 - Post-scale C2PstS 0x7FFFFF …… … … … 415 0x19F Channel 8 - Post-scale C8PstS 0x7FFFFF 416 0x1A0 Channel 1 - Mix# 1 1 C1MX11 0x7FFFFF 417 0x1A1 Channel 1 - Mix#1 2 C1MX12 0x000000 |
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