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STA015T データシート(PDF) 37 Page - STMicroelectronics |
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STA015T データシート(HTML) 37 Page - STMicroelectronics |
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37 / 55 page  37/55 STA015 STA015B STA015T Bass_Freq <= Treble_Freq Bass_Freq > 0 (suggested range: 20 Hz < Bass_Freq < 750 Hz) Example: Bass = 200Hz Treble = 3kHz TFS BFS TREBLE_ENHANCE Address: 0x7B (123) Software Reset: 0x00 Hardware Reset: 0x00 Signed number (2 complement) This register is used to select the enhancement or attenuation STA015 has to perform on Treble Frequen- cy range at the digital signal. A decrement (increment) of a decimal unit corresponds to a step of attenuation (enhancement) of 1.5dB. The allowed Attenuation/Enhancement range is [-18dB, +18dB]. 15 14 13 12 11 10 9876543210 00001 01110111000 15 14 13 12 11 10 9876543210 00000 00011001000 MSB LSB b7 b6 b5 b4 b3 b2 b1 b0 TE7 TE6 TE5 TE4 TE3 TE2 TE1 TE0 MSB LSB ENHANCE/ATTENUATION b7 b6 b5 b4 b3 b2 b1 b0 1.5dB step 0 0001 100 +18 0 0001 011 +16.5 0 0001 010 +15 0 0001 001 +13.5 : : 0 0000 001 +1 0 0000 000 0 1 1111 111 -1 : : 1 1110 111 +13.5 1 1110 110 -15 1 1110 100 -16.5 1 1110 100 -18 |
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