Duo-I Plus Dsp - Boston duo-i plus Service Manual

1 2
A
PADC_DAC P3V3_ADAU1701
FB1 L14
1.2nH
1K OHM
Do Not Populate
C2
C1 100nF, 50V C227 C265
100nF, 50V 100nF, 50V 9.1pF, 50V
Do Not Populate
GND_ANALOG
P3V3 P3V3_ADAU1701_IODVDD
FB41 FB2
1K OHM 1K OHM
C3 C4
+
C226
100nF, 50V C193 C196
330pF, 50V
10uF, 16V, ESR=2.8 330pF, 50V 330pF, 50V
GND_DSP
P3V3 P3V3_ADAU1701_PDRIVE
FB3
B
1K OHM
T27
C8 C195
100nF, 50V 330pF, 50V
GND_DSP
C
D
1 2
3
C186 C6
10nF, 50V 100nF, 50V
P3V3_ADAU1701_IODVDD
GND_DSP P3V3_ADAU1701
ADAU1701JSTZ
P3V3_ADAU1701_IODVDD P3V3_ADAU1701_IODVDD
Head Detect Pin Result
HIGH Speaker 2
VIN0 VIN0
LOW Headphone
R2 8.06k, 1%
R104 18k, 1% 4
R103 18k, 1% VIN1 VIN1
Fixed Variable Pin Result R3 8.06k, 1%
11
HIGH FIXED HEAD_DET MP0
10
LOW VARIABLE FIXED_VAR MP1
29
MP2
28
MP3
8
MP4
9
MP5
15
MP6
14
MP7
27
MP8
26
MP9
16
MP10
19
MP11
31
MCLKO
R6 49.9, 1% 32
12_288 MCLKI
3
ADC_RES
47
FILTA
40
CM
41
C14 FILTD
C15
R7 +
100nF, 50V
18k, 1%
10uF, 16V, ESR=2.8
C18
C19
+
100nF, 50V
GND_ANALOG GND_ANALOG 47uF, 16V, ESR=1.4
GND_ANALOG
GND_ANALOG C20
+ C21
100nF, 50V
10uF, 16V, ESR=2.8
GND_ANALOG
GND_DIGITAL
Special Layout Consideration
3
4 5
P3V3_ADAU1701_PDRIVE
T26
FB39 FZT953
1K OHM
C187 C5 C7 Q1
+
R1
10nF, 50V 100nF, 50V 10uF, 16V, ESR=2.8
1K, 1%
GND_DSP
U1
46
VOUT0 VOUT0
45
VOU1 VOUT1
44
VOUT2 VOUT2
43
VOUT3 VOUT3
Selfboot EEPROM
7
ADDR0
20
A01 U10 24LC64
21
CLATCH/WP P3V3_ADAU1701_IODVDD 1 8
22 A0 VCC
SDA SDA3_3 2 7
23 A1 WP
SCL SCL3_3 3 6
A2 SCL
4 5
6 GND SDA
SELFBOOT P3V3_ADAU1701
5
RESET RESET_ESD
30 I²C Address: 0xA0
RSVD
38 PLL Mode: 256 × fs
PLL_MODE0
39
PLL_MODE1
35 P3V3_ADAU1701_PDRIVE GND_DSP GND_DIGITAL
PLL_LF
C16 C17
I²C Address: 0x68 3.3nF, 16V 56nF, 16V
R8
475R, 1%
GND_DSP P3V3_ADAU1701
GND_DSP

Duo-i Plus DSP

4 5
6 7
P3V3
FB36
1K OHM
C215
100nF, 50V
GND_DIGITAL
SCL3_3
SDA3_3
6 7
8
A
B
C
D
Integrated Products Division
300 Jubilee Drive
Peabody, MA 01960 USA
978.538.5000 FAX: 978.538.6226
Title
Duo-I+
Size Number Revision
D DSP 3.0
Date: 9/10/2009 Time: 11:00:57 PM Drawn By: GlennR Sheet 6 of 9
File: C:\BostonAcoustics\ClockRadio\Duo-I Plus\Hardware\DSP.SchDoc
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