BU9253AS_05 Datasheet, PDF (11/17 Pages) Rohm – Karaoke/Surround Digital Echo

・Output/ input LPF circuit
This is the LPF circuit connected to the ADC input unit and the DAC output unit. Delay time setting can be select by
internal resistor.
Delay amount
Switch
Resistance value
48.0msec or below
S1
4.8kΩ*
96.0msec or below
S2
11.3kΩ*
*Internal resistance precision is ±30%.
Pin1s11、11,91ピ9ン
Pi₁n₂s_、1₂2_0ピ, 2_ン0 P₁i₃n_、s₂1_1ピ3,_ン21
R1
R2
S1
R1
R1
R2
R2
S2
N⁽o^注te⁾¹:¹I^ピn^ンP^でin^は1^外1,^付is^けa^容n^量e^結x^合te^にrn^なa^りl c^まa^すpacity connection
Fig.32 Input LPF / Output LPF circuit
・Auto mute circuit
Delay output is muted during power on and delay time switching.
●Timing chart
＜BU9262AFS＞
・Serial interface specification
SI
D0 D1
D12 D13 D14 D15
SCK
SLT
・Serial timing
Fig.33 Serial interface specification
SCK
SI
twCK
tdsu
twCK
th
tdsu
twLT
SLT
Fig.34 Serial timing
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