Arcam DiVA DV78, Service Manual

Page: 13 / 41

ISSUE
DRAWING NO.
DRAWING TITLE
DATE
Filename:
ECO No. DESCRIPTION OF CHANGE
L960C3_1.2.Sch
DV78 MAIN CLOCKS
Contact Engineer:
L960C3
2 Dec 2003
INITIALS
Printed:
3 10 Sheet of
Notes:
Contact Tel: (01223) 203270 Peter Gaggs
A & R Cambridge Ltd.
Pembroke Avenue
Cambridge CB5 9QR
Waterbeach
A2
XT1
6
XT2
5
RST
18
MODE
2
MD/FS0
19
G
N
D
P
7
G
N
D
B
15
G
N
D
4
V
D
D
P
8
V
D
D
B
16
V
D
D
3
MCKO 10
MCKO 11
SCKO1 12
SCKO2 14
SCKO3 17
SCKO4 13
ML/SR0
1
MC/FS1
20
RSV 9
IC300
PLL1700E
SSOP-20
C302
10UF
50V
YK
C304
10UF
50V
YK
+5VD
+5VD +3V3D
DGND
DGND
DGND DGND
RESET*
RESET*
DGND
ML_1700
MC
MD
ML_1700
MC
MD
From Vaddis
CLOCK GENERATOR
CLK27M_VADDIS
CLK27M_VADDIS
OE
1
A0
2
Y0 18
A1
4
Y1 16
A2
6
Y2 14
A3
8
Y3 12
IC301A
74LVC244AD
SO-20
OE
19
A0
17
Y0 3
A1
15
Y1 5
A2
13
Y2 7
A3
11
Y3 9
IC301B
74LVC244AD
SO-20
GND 10
VCC 20
IC301C
74LVC244AD
SO-20
DGND
DGND
AUDIO CLOCK BUFFER
R301
33R
0W125
0805 R302
100R
0W125
0805
R303
100R
0W125
0805
R304
100R
0W125
0805
R307
100R
0W125
0805
MCLK_VADDIS
MCLK_DAC0
MCLK_DAC1
MCLK_DAC2
OE
1
A0
2
Y0 18
A1
4
Y1 16
A2
6
Y2 14
A3
8
Y3 12
IC302A
74LVC244AD
SO-20
OE
19
A0
17
Y0 3
A1
15
Y1 5
A2
13
Y2 7
A3
11
Y3 9
IC302B
74LVC244AD
SO-20
ABCLK
ALRCLK
I2S BUFFER
DGND
1 8
RP300A
100R
62mW
1206
2 7
RP300B
100R
62mW
1206
6 3
RP300C
100R
62mW
1206
ABCLK_DAC0
ABCLK_DAC1
ABCLK_DAC2
DGND
5 4
RP300D
100R
62mW
1206
ALRCLK_DAC0
ALRCLK_DAC1
ALRCLK_DAC2
ABCLK_DAC0
ABCLK_DAC1
ABCLK_DAC2
ALRCLK_DAC0
ALRCLK_DAC1
ALRCLK_DAC2
ABCLK
ALRCLK
PSUFS0
PSUFS1
DGND
PSUCLK
PSUCLK should be 44.1kHz or 48kHz
CLK
3
D
2
SD
4
R
D
1
Q 5
Q 6
IC304A
74HC74D
SO-14
CLK
11
D
12
SD
10
R
D
13
Q 9
Q 8
IC304B
74HC74D
SO-14
I0
4
I1
3
Y 5
Y 6
E
7
I2
2
I3
1
I4
15
I5
14
I6
13
I7
12
S0
11
S1
10
S2
9
IC305A
74HC151D
SO-16
+3V3D
+3V3D
+3V3D
+3V3D
VCC 16
GND 8
IC305B
74HC151D
SO-16
VCC 14
GND 7
IC304C
74HC74D
SO-14
+3V3D
PSU CLOCK DIVIDER
GND 10
VCC 20
IC302C
74LVC244AD
SO-20
Fs PSUFS1 PSUFS0 PSUCLK
44.1kHz 0 0 44.1kHz
48kHz 0 0 48kHz
88 2kHz 0 1 44.1kHz
96kHz 0 1 48kHz
176.4kHz 1 0 44.1kHz
192kHz 1 0 48kHz
others 1 1 OFF
C312
100N
50V
0805
C313
100N
50V
0805
DGND
PSUFS0
PSUFS1
27MHz
Audio Master clock (see table)
Fs Master clock frequency
44.1kHz 16.9344MHz (384 x Fs)
48kHz 18.432MHz (384 x Fs)
88.2kHz 33.8688MHz (384 x Fs)
96kHz 36.864MHz (384 x Fs)
176.4kHz 33.8688MHz (192 x Fs)
192kHz 36.864MHz (192 x Fs)
Audio Master clock frequency for different sample rates
DGND
MUTE* MUTE_BUF*
Spare clock buffer used to buffer mute control
P300
P301
DGND
P302
P303
DGND
C303
100UF
10V
YXF
R312
10R
0W125
0805
C305
100UF
10V
YXF
C309
100N
16V
0603
C310
100N
16V
0603
C306
100N
16V
0603
C307
100N
16V
0603
C308
100N
16V
0603
R314 100R 0W125 0805
NF
R315 100R 0W125 0805
NF R316
100R
0W125
0805
R317
100R
0W125
0805
P308
P309
P310
P314
P315
P316
P305
P306
P307
P311
P312
P313
P317
P318
P319
P320
P321
P323
P325
P326
P327
P329
P324
P334
P335
R311
100R
0W125
0805
P345
P346
P347
P343
P348
P344
P349 P350
P351
P352
P353
P354
P362
P363
P355
R300
33R
0W125
0805
R306
47R
0W125
0805
R305
1K8
0W125
0805
Base resistor for TR401 here to reduce noise on MUTE_BUF*
X300
27MHz
HC49
C300
33P
100V
0805
C301
33P
100V
0805
03_E200 PG 03-07-03 Production Release 1.0
03_E214 PG 16-07-03 Change damping pads from Sorbothane to rubber 1.1
ITEM300 1 Pad Damping 7.5x6x3MM Rubber E828AP Fit on one side of X300
ITEM301 1 Pad Damping 7.5x6x3MM Rubber E828AP Fit on the other side of X300
ITEM302 1 Pad Damping 7.5x6x3MM Rubber E828AP Fit on top of IC300
03_E322 PG 02-12-03 Component value changes to digital output 1 2