Yamaha DSPAX-1 Schematic
ABCDEFGH
DSP-AX1/RX-V1
■ BLOCK DIAGRAM
1
2
3
4
5
6
E-84/J-76
ABCDEFGH
DSP-AX1/RX-V1
■ BLOCK DIAGRAM
1
2
3
4
5
E-87/J-79
6
ABCDEFGH
AM IF COIL
CONTROL
DECODER
S.CURVE
LEVEL DET
FM DET
COIL
Q4
S.METER
SD
ANT
COIL
VCO
STOP
OSC
COIL
AGC
PLL
MIX
OSC
MUTE
PROGRAMABLE
DIVIDER
UNIVERSAL
COUNTER
PHASE DETECTOR
CHARGE PUMP
DATA SHIFT
REGISTER LATCH
UNLOCK
DETECTOR
T5
L.P.F.
L
R
L.P.F.
T4
XL2
FM ANT
GND
TUNER
CONTROL
AM ANT
AM COIL PACK PK2
RF AMP
LOCAL OSC
BUFFER
PK1
VT
OSC
STRQ
AM
OSC
FM OSC
VT
XL1
STSG
MONO D1
D2
METER
VR1
SEPARATION
VR2
Q5
/FM
/ST
CE
DI
CLK
DO
TMUTE
METER
/ST
MIX
A,B,G,L only
T3
AM/FM IF DET.
IC1
LA1266
MPX
IC3
LA3401
FM IF POST AMP
AM IF AM DET
T2
AM RF
IF
/AM
AM IF
FM IF
IF
QUADRATURE
DET
T1
IF AMP
Q1,2
q
CERAMIC
FILTER
Fi 1
CERAMIC
FILTER
Fi 2
Fi 3
REFERENCE
DIVIDER
FM/AM
BAND CHANGE
FM/AM
MUTING
TUNER
CONTROL
PLL
IC2
LC72131
TUNER
t
i
u
q
!0
!1
!8
@0
@1
@3
@4
!2
!5
!6
!8
!9
@0
q
@2
i
!1
o
!0
e
r
t
y
!3
!6
i
t
y
!2
!5
w
q
!7
ST.IND
!0
!3
!5
t
i
@1
r
Q3
u
!3
42
21
1
22
DSP-AX1/RX-V1
■ PIN CONNECTION DIAGRAM■ BLOCK DIAGRAM (TUNER : RX-V1 only)
1
● ICs
AN78N05
NJM7905FA
NJM79M12FA
NJM78M12FA
PQ3RD13
PQ05RD11
NJM4556AL
µPC4570HANJM2068L-D
NJM2068MD
1: VIN
1:INPUT
2:COMMON
3:OUTPUT
1
2
3
1:COMMON
2:INPUT
3:OUTPUT
3
2
1
TC74HCU04AP
2
3
14
1
NJM2904M
µPC4570G2
5
8
AK5383-VS
W24258S-70LE-EL10
DF1704E
YSD917-ME1
28
4
1
1
7
15
TC74HC4051AP
TC74HC4052AP
TC74HC4053AP
LA7108M
16
1
HD74HC00FPEL
TC74HCU04AFEL
TC74HC125AF
TC74HC126AF
µPC4574G2
8
14
1
MSM514260C-60JS
14
8
8
7
1: OUTPUT
2: COMMON
3
3: INPUT
2
BU2092
18
1
TC74HC151FPEL
HD74HC151FPEL
ADM202JRN-REEL7
CS3310-KSR
9
16
1
64
1
M35013-79SP
9
20
20
8
M66004MBFP-200C
1
1
4
1
PCM1704U
11
1
33
2: VO
3: GND
4: VC
1
LA3401
LC72131
10
22
10
PM4007A
YSS908-F
YSS918D-F
M30624FGFP
81
32
100
1
LC78211
LC78212
LC7536-Y
30
1
80
1
8
1
11
15
51
50
31
30
LA1266
24
YSS910-S
9
1
TC9274N-013
42
132
133
176
1
8
1
4
1
12
21
89
88
45
44
4
5
6
E-88/J-80
● Transistors
2SC1740S (R, S)
2SD1915F (S, T)
DTA144ES
DTC114ES
DTC143XS
DTC144ES
B
C
E
2SA1708 (S, T)
2SC4488 (S, T)
B
C
E
● Diodes
1SS133
1SS270A
1SR139-400
MA185
AK04
RB441Q-40
2SC1846S
MTZJ2.0B
MTZJ5.1A
MTZJ5.1B
MTZJ5.6B
MTZJ6.2C
MTZJ6.8A
MTZJ6.8B
2SA1037K (Q, R, S)
2SC2412K (Q, R, S)
2SC3326 (A, B)
2SD1383K (A, B)
2SD1938F (S, T)
DTA144EKA
DTC143EKA
DTC144EKA
E
C
B
MTZJ11.0B
MTZJ12.0C
MTZJ15.0B
MTZJ27.0B
MTZJ30.0D
Anode
Cathode
C
2SA1837
2SB1375
2SC4793
2SD2396 (J, K)
B
C
E
1SS355
RB501V-40
Cathode
E
B
2SA970 (GR, BL)
2SA1015 (Y)
2SC535 (A, B, C)
2SC1145 (O, Y)
2SC1815 (Y)
2SC2240 (GR, BL)
2SC2705 (O, Y)
2SC2878 (A, B)
2SA1694 (O, P, Y)
2SC4467 (O, P, Y)
KV1851-TL
Anode
2SK246 (Y)
E
C
B
B
C
E
S1NB20
2SA1943 (O, R)
2SC5200 (O, R)
–
+
S
G
D
B
C
E
D3SBA20
D4SBS4
D10XB20
D15XB20
RBV-1306
–
+
ABCDEFGH
IJKLMN
DSP-AX1/RX-V1
■ SCHEMATIC DIAGRAM (DSP(1)-1)
1
Point q (Pin 9 of IC2)
V : 2V/div, H : 50 nsec/div
DC, 1 : 1 probe
4.8
4.1
4.1
4.8
0
-0.6
0
-0.6
2
0
3.1
2.5
4.8
0.03
3
2.5
3.1
0.3
2.5
3.1
0.3
4
-0.1
4.8
-0.8
2.4
2.4
-4.8
4.8
-0.5
0.7
0V
4.7
4.7
0
0
0
2.3
0
0
4.7
0
4.7
000
3.3
000
0
2.4
4.7
4.8
0
0
0
0
2.5
0.3
4.8
0
0
4.8
0
0
4.8
4.8
4.8
4.8
0.3
4.3
0
4.8
0
0
4.8
4.8
4.0
0
0
0
0
0
0
0
0
4.8
0.3
4.4
0
0
4.8
0
4.8
0
0
3.8
2.4
4.7
4.7
2.3
4.7
0
0
0
e
0
AC-3 RF DEMODULATOR
0
0
0
4.8
0
0
0
4.7
4.8
0
0
00000
000
0
2.2
000
4.7
0
0
4.7
RAM
4.7
4.7
4.7
4.7
4.7
4.7
4.7
1.2
4.7
0
1.2
4.7
1.2
0
0
0
0
0
0
0
4.7
4.7
4.7
4.7
0
0
1.2
4.7
1.2
4.7
4.7
0
0
0
4.7
4.7
4.7
2.0
1.2
0
0
LSt/RSt
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3.2
3.2
0
4.8
2.4
2.4
~
0
0
MATRIX 6.1/DTS ES
2.4
4.7
2.0
4.8
000
0
3.2
4.8
0
4.7
4.7
AC3Dav
DECODER
4.8
0
0
3.2
0
0
0
3.2
0
4.8
3.2
0
0
0
0
LS/RS
RC
Point w (Pin 11 of IC2)
V : 2V/div, H : 50 nsec/div
DC, 1 : 1 probe
0V
Point e (Pin 56 of IC24)
V : 2V/div, H : 50 nsec/div
DC, 1 : 1 probe
0V
Point r (Pin 13 of IC1)
V : 2V/div, H : 50 nsec/div
DC, 1 : 1 probe
0V
IC25 : W24258S-70LE-EL10
32K X 8 bits Static RAM
1
A14
2
A12
3
A7
4
A6
5
A5
6
A4
7
A3
8
A2
9
A1
10
A0
11
I/O1
12
I/O2
13
I/O3
14
VSS
CLK GEN
2
1
8
7
6
5
4
3
26
11
19
27
20
22
DATA
CNTRL
CLK
GEN
ROW DECODER
3.5
0
0
0
0
2.3
2.4
0
~
0
4.8
0
0
0
4.8
4.8
4.8
4.8
0
0
4.7
5
3.5
2.5
4.7
0
4.4
0
0
0
2.3 4.7
4.7
4.7
4.8
4.8
0
DIR5
4.7
4.8
0
2.5
0
4.8
0
q
2.5
4.7
0
3.5
3.5
6
0
0
4.7
4.7
0
0
4.7
0
0
4.8
7
2.4
2.4
11.6
2.4
2.4
4.8
2.4
2.4
2.4
2.4
0
0
2.42.4
ADC
2.3
2.4
w
4.8
0
2.4
4.7
0
0
0
0
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
~~~~~~~
~0~
4.8
~
~~~~~
~
~~~
~
~
~
~
4.8
0
3.2
2.4
2.4
~
0
0
4.7
4.8
SUB CPU
4.8
4.8
DIGITAL
4.8
4.8
4.8
4.8
0
3.2
3.2
0
0
0
0
0
0
0
0
4.7
4.7
r
0
1.4
1.4
0
0
0
~
0
0
2.3
0
2.2
4.8
4.8
0
0
4.8
0
0
0
0
4.8
4.8
4.9
4.8
DOLBY DIGITAL/DTS/PRO LOGIC
3.2
2.4
000
0
0
4.8
0
4.7
AC3D2av
DECODER
4.8
3.2
0
0
0
3.2
0
0
0
~
~
~
3.2
0
0
0
0
0
0
L/R
LSt/RSt
C/LFE
A12
A14
A2
A3
A4
A5
A6
A7
A13
I/O1
I/O8
0
0
0
4.8
3.2
0
0
WE
CS
OE
28
VDD
27
WE
26
A13
25
A8
24
A9
23
A11
22
OE
21
A10
20
CS
19
I/O8
18
I/O7
17
I/O6
16
I/O5
15
I/O4
PRECHARGE CKT
CORE CELL ARRAY
512 ROWS
64 x 8 COLUMNS
I/O CKT
COLUMN DECODER
23 21 9 10 25 24
A1A0A8
A11
A10
A9
10
2.4
4.9
2.4
4.8
000
4.9
0
0
2.6
1.9
0
4.8
0
0
4.8
4.8
4.8
0
0
0
0
2.4
4.9
0
4.8
2.4
0
0
2.4
0
8
0
3.6
0
2.6
2.4
2.4
2.4
0
2.4
2.4
0
2.4
-11.6
2.4
4.8
9
IC3 : AK5383-VS
24 bit 2ch A/D Converter
SMODE1
SMODE2
SCLK
LRCK
HPF
HPF
CALLBRATION
SRAM
7 8
VD
FSYNC
DGND
15
19
17
18
SDATA
HPFE
MCLK
DFS
* All voltage are measured with a 10MΩ/V DC electric volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
E-90/J-82
IC38 : µPC4570G2
IC45 : NJM2904M-T1
Dual OP Amp
1
OUT
1
2
–IN
1
–+
3
+IN
1
4
–V
CC
–+
DECIMATION
FILTER
DECIMATION
FILTER
CONTROLLER
9212223 10
CAL
14 13 161112
SERIAL OUTPUT
INTERFACE
RST
IC46 :
µPC4574G2
4 Channel OP-Amp
OUT A
1
A
+INB
–INB
– +
2
3
V+
4
5
– +
6
B
7
–IN A
+V
CC
8
OUT
2
7
–IN
2
6
5
+IN
2
+IN A
OUT B
OUT D
14
D
+ –
–IN D
13
+IN D
12
V–
11
+INC
10
+ –
–INC
9
C
OUT C
8
IC4, 36, 37 : HD74HC00FPEL
Quad 2 Input NAND
1
A1
2
B1
3
Y1 A4Y412
4
A2
5
B2
6
Y2
7
V
SS
V
DD
14
B4
13
11
B3
10
A3
9
Y38
IC39, 40 : TC74HCUO4AFEL
Hex Inverters
1
1A
2
1Y
3
2A 6Y5A12
4
2Y
5
3A
6
3Y
7
V
SS
V
DD
14
6A
13
11
5Y
10
4A
9
4Y8
IC42 : TC74HC125AF
Quad 3 State Bus Buffers
1C
GND
1
1A
2
3
1Y
4
2C
5
2A
6
2Y
7
Vcc
14
4C
13
4A4Y12
11
3C
10
3A
9
3Y8
IC41 : TC74HC126AF
Quad 3 State Bus Buffers
1C
GND
1
1A
2
3
1Y
4
2C
5
2A
6
2Y
7
Vcc
14
4C
13
4A4Y12
11
3C
10
3A
9
3Y8
IC43, 44 : HD74HC151FPEL
8 to 1 Data Selectors
INPUTS OUTPUTS
SELECT
STROBE
Y
C
B
A
X
X
X
L
L
L
L
L
H
L
H
L
L
H
H
H
L
L
H
L
H
H
H
L
H
H
H
W
S
L
H
H
D0
L
D0
D1
L
D1
D2
L
D2
D3
L
D3
D4
L
D4
D5
L
D5
D6
L
D6
D7
L
D7
DATA INPUTS
VCC4567AB
16 15 14 13 12 11 10 9
D4
D5 D6 D7 A B
D3 C
D2 D1 D0 Y W S
1 2 3 4 5 6 7 8
321
0
DATA INPUTS
Y
W
OUTPUTS
DATA SELECT
STROBE
C
GND
VREFL
GNDL
VCOML
AINL+
AINL–
ZCAL
AINR+
AINR–
VCOMR
VREFR
GNDR
1
2
3
4
5
6
25
24
26
28
27
VOLTAGE
REFERENCE
DELTA-SIGMA
MODULATOR
DELTA-SIGMA
MODULATOR
VOLTAGE
REFERENCE
VA
AGND
BGND
ABCDEFGH
REF DC
SERVO DC
—VDD
DGND
+VDD
—VCC
AGND
+VCC
BPO DC
19 17 4 5 6 20 16 11 12
14
SERIAL INPUT I/F
&
CONTROL LOGIC
23—BIT DAC A
23—BIT DAC B
BIPOLAR
OFFSET
REFERENCE
&
SERVO
POWER SUPPLY
10
9
1
7
2
3
8
13
18
IOUT
NC
NC
NC
NC
BCLK
WCLK
DATA
20BIT
INVERT
DSP-AX1/RX-V1
IJKLMNO
■ SCHEMATIC DIAGRAM (DSP(1)-2)
0.2
0.2
0.2
0.2
RAM
2.5
2.5
1.6
~
~~~
~
0
0.2
0.2
0.2
0
0.2
1
0.2
0.2
0.2
0.2
0
0
4.8
0.1
0.2
0.2
4.8
0.2
0.2
0.2
0.2
4.6
2.0
~~~
~
4.8
0.2
0.2
0.2
0.2
4.8
0.1
2
0
0.2
4.8
t
0.2
0.2
0.1
4.8
0.2
2.5
0.2
2.5
0.2
0.2
0.2
0.2
0.2
0.2
0.1
0.1
0
0
4.8
DSP6
0
0
0.2
0.2
0
4.8
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
4.8
0
~
~
~
~
~
4
~
~
~
~
0
3.2
2.0
2.5
4.6
5
1.6
4.8
4.8 4.8
3.202.4
RAM RAM
~~~~~
2.5
2.5
4.8
0.2
0.2
0.2
0
0.2
1.6
0
4.8
~~~
0.2
0.2
0.2
0.2
4.6
2.0
0
~
0
3.2
3.2
4.8
4.8
1.5
1.6
1.6
1.6
1.6
1.7
1.6
1.6
0
1.6
1.6
1.6
1.6
1.6
1.6
3.5
1.6
4.8
0
2.4
2.4
2.4
2.4
~
~
RC
FL/FR
RL/RR
C/LFE
L/R
4.8
0
0
0
0
0
~
0
~
~
~
RC
LS/RS
C/LFE
0
0
~
~
~
~
~
0
3.2
0
L/R
4.8
~
~
~
~
3.6
3.9
~
~
4.8
3.2
4.3
4.1
4.8
0
4.8
3.2
1.6
1.5
1.6
3.5
1.6
1.6
0
1.6
1.6
0
4.8
1.6
1.6
1.6
1.7
1.6
1.6
1.6
3.9
3.9
4.3
4.1
3.6
~~~~~
2.4
2.4
2.4
0
2.4
4.8
4.8
DSP6
0
0
3.2
0
0
RAS
3.2
4.8
LCAS
UCAS
A0~A8
VCC
VSS
0
RL/RR
FL/FR
L/R
RC
FL/FR
L/R
3.2
4.8
4.8
3.0
4.4
4.4
C/RC
1.8
4.4
0
~
0
0
0
~
0
~
RL/RR
C/LFE
~
0
4.8
~
~
~
~
~
~
IC33 ~ 35 : MSM514260C-60JS
262,144-word x 16 bit Dynamic RAM
1
VCC
2
DQ1
3
DQ2
4
DQ3
5
DQ4
6
VCC
7
DQ5
8
DQ6
9
DQ7
10
DQ8
11
NC
12
NC
13
WE
14
RAS
15
NC
16
A0
17
A1
18
A2
19
A3
20
VCC
TIMING
GENERATOR
COLUMN
99
ADDRESS
BUFFERS
INTERNAL
ADDRESS
COUNTER
ROW
99
ADDRESS
BUFFERS
VBB GENERATOR
ON CHIP
REFRESH
CONTROL CLOCK
ROW
DECODERS
WE OE
WORD
DRIVERS
I/O
CONTROLLER
I/O
CONTROLLER
COLUMN
DECODERS
SENSE
AMPLIFIERS
MEMORY
CELLS
40
VSS
39
DQ16
38
DQ15
37
DQ14
36
DQ13
35
VSS
34
DQ12
33
DQ11
32
DQ10
31
DQ9
30
NC
29
LCAS
28
UCAS
27
OE
26
A8
25
A7
24
A6
23
A5
22
A4
21
VSS
16 16
I/O
SELECTOR
8
8
8
8
OUTPUT
BUFFERS
INPUT
BUFFERS
INPUT
BUFFERS
OUTPUT
BUFFERS
8
DQ1~DQ8
8
8
DQ9~DQ16
8
0
0
0
4.8
4.8
~
4.4
~
4.8
0
4.7
4.7
2.3
4.7
4.8
4.8
4.8
4.8
0
4.8
4.8
4.8
~~~~~~~
~~~~~~~~~
0
3.2
~
0
3.2
0
0
4.8
4.7
4.8
2.5
0
0
4.7
2.3
4.8
4.8
0
4.8
4.8
4.8
~~~~~~~
~~~~~~~~~~0
0
3.2
L/R
4.8
000
4.8
4.8
2.4
~
0
0
2.3
000
6
4.8
0
2.3
4.8
4.8
2.4
~
0
C/RC
4.8
000
2.4
0
2.3
4.8
4.8
4.4
0
FL/FR
4.8
000
2.4
0
2.3
4.8
4.8
4.4
0
RL/RR
4.8
000
2.4
0
2.3
4.8
4.8
3.0
0
P-E92/J84
E-1
DIGITAL FILTER
REAR
CENTER
4.8
0
4.8
0
4.8
4.8
4.8
~
0
~
2.4
2.5
2.4
CENTER
4.8
0
4.8
0
4.8
4.8
4.8
~
0
~
2.4
2.5
2.4
FRONT L
4.8
0
4.8
0
4.8
4.8
4.8
~
0
~
2.4
2.5
2.4
REAR L
4.8
0
4.8
0
4.8
4.8
4.8
~
0
~
2.4
2.5
2.4
L
-4.8
2.5
~
2.4
4.9
2.5
-4.8
~
0
2.4
4.9
0
-4.8
2.5
~
2.4
4.9
2.5
-4.8
~
0
2.4
4.9
0
-4.8
2.5
~
2.4
4.9
2.5
-4.8
~
0
2.4
4.9
0
-4.8
2.5
~
2.4
7
4.9
2.5
-4.8
~
0
2.4
4.9
0
DAC
4.9
2.6
0
-11.5
-4.8
0
0
-2.3
0
4.9
0
-2.2
0
2.6
0
0
0
0
0
11.5
0
-2.2
-2.3
-4.8
4.9
2.6
0
-11.5
0
0
0
0
0
-2.2
-2.3
-4.8
4.9
2.6
0
0
0
0
0
11.5
0
-2.2
-2.3
-4.8
4.9
2.6
0
0
-11.5
0
0
0
0
-2.2
-2.3
-4.8
4.9
2.6
0
0
0
0
0
11.5
0
-2.1
-2.3
-4.8
4.9
2.6
0
-11.5
0
0
0
0
0
8
-2.2
-2.3
-4.8
4.9
2.7
0
0
0
0
0
11.5
0
-2.1
-2.3
-4.8
4.9
2.7
2.4
0
-11.5
0
0
4.8
4.8
4.8
4.9
0
0
2.6
-4.8
~
-2.3
0
0
0
4.8
-4.8
4.8
~
-2.2
0
0
~
2.6
2.4
2.42.4
P-E93/J85
D-4
-4.8
-2.2
-2.3
2.6
~
P-E92/J84
-4.8
D-1
4.9
2.6
0
4.9
0
0
0
0
0
11.5
0
9
10
E-91/J-83
Point t (Pin 3 of IC7)
V : 1V/div, H : 50 nsec/div
DC, 1 : 1 probe
0V
P-E92/J84
D-1
0
0
11.5
0
-11.5
0
0
0
0
0
0
11.5
0
-11.5
0
0
0
0
0
11.5
0
0
-11.5
0
0
0
11.5
0
-11.5
0
0
0
IC9, 12, 15, 18, 21 : DF1704E
24 bit Digital Filter
0
0
11.5
0
IC10, 11, 13, 14, 16, 17, 19, 20, 22, 23
: PCM1704F
0
-11.5
0
0
24 bit D/A Converter
IC47~56 :
µPC4570G2
Dual OP-Amp
1
OUT
1
2
–IN
1
+IN
–V
–+
3
1
4
CC
+V
CC
8
OUT
2
7
– +
–IN
2
6
5
+IN
2
IC57 : HD74HC00FPEL
Quad 2 Input NAND
1
A1
2
B1
3
Y1 A4Y412
4
A2
5
B2
6
Y2
7
V
SS
V
14
B4
13
11
B3
10
A3
9
Y38
IIS
IW0
IW1
43 5
2
DD
BCKIN
LRCIN
MD/CKO
MC/LRIP
ML/RESV
MODE
DIN
MUTE
RST
DEM
SERIAL
28
INPUT
1
11
12
13
MODE
10
CONTROL
15
14
16
17 18 27 6
SF0
I/F
I/F
8X OVERSAMPLING
DIGITAL FILTER
FUNCTION CONTROLLER
SCK
CRYSTAL OSC POWER SUPPLY
XTI
SF1
SRO
WITH
7 9 22 8
XTO
CLKO
VDD
OW0
19 20
OUTPUT
I/F
VSS
OW1
26
25
24
23
BCKO
WCKO
DOL
DOR
* All voltage are measured with a 10MΩ/V DC electric volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
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