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DRAWING NO.
DRAWING TITLE
DATE
Filename:
ECO No. DESCRIPTION OF CHANGE
L971C3.Sch
DV29 MAIN CLOCKS & SPDIF
Contact Engineer:
L971C3
24-Aug-2004
INITIALS
Printed:
3 11Sheet of
Notes:
Contact Tel: (01223) 203270Peter Gaggs
A & R Cambridge Ltd.
Pembroke Avenue
Cambridge CB5 9QR
Waterbeach
A2
DGND
DGND DGND
FSEL0
CLOCK GENERATOR
CLK27M_VADDIS
DGND
DGND
AUDIO CLOCK BUFFER
MCLK_VADDIS
MCLK_DAC0
MCLK_DAC1
MCLK_DAC2
ABCLK
ALRCLK
I2S BUFFER
DGND
1 8
RP300A
100R 1206
2 7
RP300B
100R 1206
ABCLK_DAC0
ABCLK_DAC1
ABCLK_DAC2
DGND
63
RP300C
100R 1206
ALRCLK_DAC0
ALRCLK_DAC1
ALRCLK_DAC2
PSUFS0
PSUFS1
DGND
PSUCLK
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
+3V3D
PSU CLOCK DIVIDER
PSUCLK SHOULD BE 44.1kHz OR 48kHz
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
DGND
PSUFS0
PSUFS1
27MHz
Audio master clock frequency for different sample
rates
Fs Master clock frequency
FSEL1..0
44.1kHz 11.2896MHz (256 x Fs) 00
48kHz 12.288MHz (256 x Fs) 01
88.2kHz 22.5792MHz (256 x Fs) 10
96kHz 24.576MHz (256 x Fs) 11
176.4kHz 22.5792MHz (128 x Fs) 10
192kHz 24.576MHz (128 x Fs) 11
DGND
MUTE* MUTE_BUF*
Spare clock buffer used to buffer mute control
C303
100UF
10V
YXF
C305
100UF
10V
YXF
C309
100N
16V
0603
C310
100N
16V
0603
C306
100N
16V
0603
C308
100N
16V
0603
P308
P309
P310
P314
P315
P316
P305
P306
P307
P311
P312
P313
P318
P319
P320
P321
P323
P325
P326
P327
P329
P334
P335
P350
P351
P352
P353
P354
P362
P363
P355
Base resistor for TR401 here to reduce noise on MUTE_BUF*
X300
27MHz
HC49
ITEM300 1 Pad Damping 7.5x6x3MM RubberE828AP Fit on one side of X300 (see assembly drawing)
C311
100N
16V
0603
CLK
11
D
12
SD
10
RD
13
Q
9
Q
8
IC306B
74LVC74AD
S0-14
R301
100R 0603
R306
100R
0603
+3V3D
FSEL1
9 8
10
IC307C
74LVC125AD
SO-14
R308
100R 0603
12 11
13
IC307D
74LVC125ADSO-14
CLOCK DIVIDER
MCLK_HDMI
P301
OE
1
A0
2
Y0
18
A1
4
Y1
16
A2
6
Y2
14
A3
8
Y3
12
IC301A
74LVC244APW
TSSOP-20
OE
19
A0
17
Y0
3
A1
15
Y1
5
A2
13
Y2
7
A3
11
Y3
9
IC301B
74LVC244APW
TSSOP-20
R305
1K8 0603
P300
1 8
RP301A
100R 1206
2 7
RP301B
100R 1206
63
RP301C
100R 1206
ABCLK_HDMI
P317P303
OE
1
A0
2
Y0
18
A1
4
Y1
16
A2
6
Y2
14
A3
8
Y3
12
IC302A
74LVC244APW
TSSOP-20
OE
19
A0
17
Y0
3
A1
15
Y1
5
A2
13
Y2
7
A3
11
Y3
9
IC302B
74LVC244APW
TSSOP-20
CLK
3
D
2
SD
4
RD
1
Q
5
Q
6
IC304A
74LVC74AD
S0-14
CLK
11
D
12
SD
10
RD
13
Q
9
Q
8
IC304B
74LVC74AD
S0-14
OE
1
A0
2
Y0
18
A1
4
Y1
16
A2
6
Y2
14
A3
8
Y3
12
IC309A
74LVC244APW
TSSOP-20
ADAT0
ADAT1
DGND
1 8
RP302A
100R 1206
63
RP302C
100R 1206
ADAT_DAC0
ADAT_DAC1
OE
19
A0
17
Y0
3
A1
15
Y1
5
A2
13
Y2
7
A3
11
Y3
9
IC309B
74LVC244APW
TSSOP-20
ADAT2
DGND
ADAT_DAC2
R312
100R 0603
GND
10
VCC
20
IC301C
74LVC244APW
TSSOP-20
GND
10
VCC
20
IC302C
74LVC244APW
TSSOP-20
GND
10
VCC
20
IC309C
74LVC244APW
TSSOP-20
C318
100N
16V
0603
VCC
14
GND
7
IC304C
74LVC74AD
S0-14
GND
7
VCC
14
IC307E
74LVC125AD
SO-14
C317
100N
16V
0603
R300
75R 0603
5 6
4
IC307B
74LVC125AD
SO-14
2 3
1
IC307A
74LVC125AD
SO-14
DGND
C312
100N
16V
0603
C313
100N
16V
0603
CLK
3
D
2
SD
4
RD
1
Q
5
Q
6
IC306A
74LVC74AD
S0-14
DGND
5 6
4
IC308B
74LVC125AD
SO-14
9 8
10
IC308C
74LVC125AD
SO-14
12 11
13
IC308D
74LVC125AD
SO-14
2 3
1
IC308A
74LVC125AD
SO-14
SPDIF COAX OUTPUT
GND
7
VCC
14
IC308E
74LVC125AD
SO-14
SPDIF
DGND DGND
DGND
DGND
DGND
1
3
4
2
L301
1000R @ 100MHz
DLW31S
DGND
EMC_GND
DGND
+5VD
OPTICAL OUT
SPDIF_OUT
SPDIF_GND
DGND
+3V3D
D300
BAT54S
SOT-23
C304
100UF
10V
YXF
C307
100UF
10V
YXF
P328 P330
P322
P331
P332 P333 P337
P336
P324
VCC
2
GND
3
I/P
1
TX300
JFJ1001-010010
R314
100R 0603
R311
100R 0603
R315
750R 0603
R316
750R 0603
R317
750R 0603
C320
100N
16V
0603
SCRN
SKT300
KUNMING
GOLD
1
2
4
IC303A
SN74AHC1G00DBVR
DBV-5
ENABLE_AV
Ensures audio clock can be trurned off in standby mode
GND
3
VCC
5
IC303B
SN74AHC1G00DBVR
DBV-5
C319
100N
16V
0603
XTI
7
XTO
8
FSEL
14
VSS2
6
VSS3
11
VSS1
2
VDD2
5
VDD3
12
VDD1
1
MO1
3
MO2
4
AO1
9
AO2
10
SO1
13
SO2
15
NC
16
IC300
SM8707E
VSOP-16
C314
100N
50V
0805
C343
100N 50V
0805
C316
100N
50V
0805
C322
100P
100V
0805
VCC
14
GND
7
IC306C
74LVC74AD
S0-14
C324
100N
16V
0603
R323
100R 0603
P341
P340
P342
P343
P345
P344
P347
P346
P348
P356
P349
P357
P358
P359
P360
P361
P364
P366
P371
P365
P368
P372
P374
P376
SPDIF_OP
DGND
P302
C325
100N
16V
0603
C326
100N
16V
0603
C327
100N
16V
0603
C328
100N
16V
0603
C329
100N
16V
0603
C330
100N
16V
0603
C331
100N
16V
0603
C332
100N
16V
0603
C333
100N
16V
0603
C334
100N
16V
0603
C335
100N
16V
0603
C336
100N
16V
0603
C337
100N
16V
0603
C338
100N
16V
0603
C339
100N
16V
0603
C340
100N
16V
0603
+3V3D
DGND
C341
100N
16V
0603
R318
120R
0W125
0805
R319
1K0
0W125
0805
C323
10N
50V
0603
C300
27P
100V
0805
C301
27P
100V
0805
R313
56R
0W1250805
NF
R320
0R0
0W125
0805
NF
C321
47P
100V
0805
NF
+3V3
REG300
LM1086CS-3.3
TO-263
C342
100N
16V
0603
C302
100N
16V
0603
+3V3PLL
+5VD
84
51
TX301
PCB Mount SMT
7A29398
DGND
C315
100N 50V0805
P304
NF
R302
75R 0603
R303
75R 0603
R304
75R 0603
R307
75R 0603
R310
75R 0603
R321
75R 0603
R309
47R 0603
R322
47R 0603
DV29
DV79, DV75
PG 1.004_E121 09-08-04 Production release