BU9253AS_05 Datasheet, PDF (8/17 Pages) Rohm – Karaoke/Surround Digital Echo

●Pin description, Block diagram, Application circuit
＜BU9262AFS＞
・Description of terminal
・Block diagram
No. Symbol
Function
1
NC
Not connected
2
TESTB Test negative logic input pin (normally “H” input)
3
SCK
Serial clock input
4
SLT
Serial latch input
5
SI
Serial data input
6
CLKO Oscillation output pin
7
CLKI
Oscillation input pin
8
NC
Not connected
9
DSOUT Delay source output
10 TESTOUT Test output pin (normally “L” output)
11
LPF1I1
12
LPF1I2 LPF capacitor external pin
13
LPF1O
14
ADI
ADC capacitor connection pin
15
ADO
16
GND
GND pin
17
DAI
DAC capacitor connection pin
18
DAO
19
LPF2I1
20
LPF2I2 LPF capacitor external pin
21
LPF2O
22
VOIN Delay signal / volume input pin
23
DSIG Delay signal output
24
VREF Analog reference voltage
25 RCOUT Rch output
26
LCOUT Lch output
27
FBOUT Feedback signal output
28
RCIN Rch input
29
LCIN
Lch input
30
VCC
Power source pin
31
MICIN Microphone input (microphone amplifier output connected)
32
MIXIN Mix signal input
・Application circuit
1
DLYVOL
32
2
Tテesスt mトoモdeーnドeg　a負tiv論e 理log入ic力input
31
C_コo_ンntr_トol_{ロール}
3
Se_シria_リl _アル
4
cコonンtトroロl ール
Input mixer
se入le力cミtoキr サ
30
セレクタ
29
circu回it路
5
28
6
C^クlo^ロc^ッk ^ク
7
8
Out出p力ut
mミiキxiシngング
27
＋
26
＋ 25
9
10
Tテesスt トmoモdーe oドu出tp力ut
11
12
LPF
13
＋
FBVOL
RAM
Rv_{基oeltf準aegr電}een_圧ce
24
23
Rリeセseッt ト
22
21
LPF
20
14
ADC
15
16
Pro_処ces_理sing
19
18
DAC
17
Fig.28 Block diagram
・Pin assignment
NC 1
TESTB 2
SCK 3
SLT 4
SI 5
CLKO 6
CLKI 7
NC 8
DSOUT 9
T^TE^ES^ST^TO^OU^UT ¹⁰
LPF1I1 11
LPF1I2 12
LPF1O 13
AD I 14
AD O 15
GND 16
32 M IXIN
31 M ICIN
30 VC C
29 LCIN
28 RCIN
27 FBO UT
26 LCO UT
25 RCOUT
24 VR EF
23 DSIG
22 VO IN
21 LPF2O
20 LPF2I2
19 LPF2I1
18 D AO
17 D AI
Fig.29 Pin assignment
＋
47u
SERIAL CLOCK
SERIAL LATCH
SERIAL DATA
R
R
2MHz
1u NP
0.01u
2200p
0.01u
1
2
Tテesスt mトodモeーneドga　tiv負e l論og理ic 入inp力ut
3
Se_シri_リal_アル
4
コ^coンⁿト^troロ^l ール
circu回it路
5
6
Cクloロcッkク
7
8
9
10
T^テe^スs^トt ^出o^力utput
11
12
LPF
13
＋
FBVOL
RAM
14
ADC
15
Pr_処oce_理ssing
16
DLYVOL
Input mixer
s^入el^力ec^ミto^キr ^サ
セレクタ
Output
＋
m_ミi_キx^出i_シn^力g_ング
＋
Rv_{基oeltf準aegr電}een_圧ce
LPF
32
＋
31
30
＋
29
＋
28
27
＋
26
＋
25
24
＋
23
22
21
20
0.1u
1u
1u
1u
0.33u _{R 1M}
2.2u
2.2u
＋
2.2u
47u
0.1u
2200p
MIC IN
Lch IN
Rch IN
Lch OUT
Rch OUT
DSIG
19
DAC
18
17
0.01u
0.01u
Fig.30 Application circuit
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