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BU9408KS2 Datasheet(PDF) 10 Page - Rohm |
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BU9408KS2 Datasheet(HTML) 10 Page - Rohm |
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10 / 57 page  Technical Note 10/53 BU9408KS2 www.rohm.com 2012.03 - Rev.A © 2012 ROHM Co., Ltd. All rights reserved. 2. Data and System-clock setting The input-and-output distribution diagram of the audio data of BU9408KS2 is shown below. BU9408KS2 has a 4-line digital stereo input, 3-line digital stereo output and 2-line analog stereo output. The digital data input to the DSP operation part is first changed to fs=48kHz data at the ASRC (asynchronous sampling rate converter). DSP operation part output is changed to either I 2S format digital output, S/PDIF format digital serial output or analog output. 2 2--1 1.. IIn np pu utt d da atta a s se elle ec cttiio on n tto o S S--P P C Co on nv ve errs siio on n 1 1 ((S SE EL L1 1)) Default = 0 Select Address Value Operation Description &h03 [ 1:0 ] 0 Input data from I2S_IN1 1 Input data from I2S_IN2 2 Input data from I2S_IN3 3 Input data from I2S_IN4 2 2--2 2.. IIn np pu utt d da atta a s se elle ec cttiio on n tto o S S--P P C Co on nv ve errs siio on n 2 2 ((S SE EL L1 1)) Default = 0 Select Address Value Operation Description &h03 [ 5:4 ] 0 Input data from I2S_IN1 1 Input data from I2S_IN2 2 Input data from I2S_IN3 3 Input data from I2S_IN4 2 2--3 3.. O Ou uttp pu utt d da atta a s se elle ec cttiio on n P P--S S C Co on nv ve errs siio on n 1 1 ffo orr D DA AT TA AM MO O tte errm miin na all ((S SE EL L2 2)) Default = 0 Select Address Value Operation Description &h04 [ 1:0 ] 0 Main data output after DSP operation 1 Sub data output after DSP operation 2 Data output before DSP operation Tone DF1 ΔΣ DAC LINE OUT DSP operation part Control I/F CG S-P CONV1 I2S_IN1 EVR PLL1 Audio DSP (BU9408KS2) P-S CONV2 I2S_OUT_Main S E L 2 SPDIF Dec S/PDIF SEL6 ASRC ・・・ Func. Main I2S_IN2 S E L 1 P-EQ DF2 16bit DAC HP OUT S-P CONV2 P-S CONV1 I2S_OUT_Sub PLL2 I2S_IN3 I2S_IN4 S E L 5 ① ② ③ ④ ⑤ S E L 4 S E L 3 DATAI1,BCKI1,LRCKI1 DATAI2,BCKI2,LRCKI2 DATAI3,BCKI3,LRCKI3 DATAI4,BCKI4,LRCKI4 AOUTL2,AOUTR2 AOUTL1,AOUTR1 SPDIFO DATAMO,BCKO,LRCKO DATASO (ERR2_BCK, ERR1_LRC) S E L 7 |
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