Yamaha YSP-1 Service Manual page 52

A B C
YSP-1
SCHEMATIC DIAGRAM (DSP 2/2)
1
Page 53 G7
to INPUT (2)_CB9
ANALOG IN
2
SUBWOOFER OUT
3
DIGITAL IN
0.4
3.3
0 0
0
4.3 3.3
4 0 0
DIR
3.3
3.3
4.1 1.5
1.6
A-1
1.6
3.3 3.3
0 0
5
6
0
0
1.3
1.3
3.3
0.5
0
3.3
3.3
3.3
7
1.3
1.3
0
0
3.3
0
3.2
3.3
1.3
1.3
0
0
0
3.3
3.3
8 3.3
9
POINT A-1 pin 28 of IC300 POINT C-1 pin 13 of IC304
10
★ All voltages are measured with a 10MΩ/V DC electronic volt meter.
★ Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
52
D E F
3.3
3.2
3.2
3.2
3.4 3.2
3.4
3.3
0
0.1 0.1
C-1
3.2 0
CPU
3.3 3.3
3.3
3.4 3.3
1.6 0
0 3.3
0 2.3
0.1
3.4
Key Input (A-D) Pull-Up Resistance 10 k-ohms
3.2 3.3
Ohm 0 k +1.2 k
3.2 3.3
V ~ 0.30 ~ 0.70
3.2 ADKEY 0 VOLUME 3.3
3.3 94pin A/D2 + INPUT
3.3
3.2 ADKEY 0 VOLUME
– 0
95pin A/D1 -
0
3.2
3.1
3.2
0
0 0
0
0
0
3.3 0
1.3
1.3
0
1.3
1.3
0
0
3.3
3.0
0
1.3
1.3
0
0
MAIN DECODER
3.3
0
~
0
0
~
1.2
1.6
IC312: NJM2068MD IC311: AK5381VT-E2
96kHz 24Bit ∆Σ A/D Converter
Dual OP-Amp.
VA
6
OUT 1 8 +V
1 CC
–IN 1 2 7 OUT 2
+ – + –
+IN 3 6 –IN AINL
1 2 2
Modulator
–V 4 5 +IN
CC 2
AINR 1
Modulator
Voltage
VCOM 4
Reference
15 3 16
CKS2 CKS1 CKS0
G H
Page 53 I7 Page 53 F7
to INPUT (2)_W10 to INPUT (3)_W11
3.4
3.2
0.1
2.5
0
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.3 3.2
3.2 3.2
0.5 3.2
3.2 3.3
3.3 1.6
3.2 1.7
1.6
1.6
~
POST
0
0
PROSESSER
0
0 ~
~ 0.6
~ ~
1.2 0
2.5 0
IC310: AK4381VT
192kHz 24Bit 2ch DAC
AGND VD DGND MCLK MCLK
5 7 8 11 1
14
Clock De-emphasis Clock 13
Control Divider
Divider CSN
6 µP
Decimation 16
LRCK CCLK 7
10 Interface
Filter
CDTI 8 15
12
Decimation 12 SCLK 8X
SCF
Filter LRCK Interpolator Modulator
4 Audio 11
BICK 2 Data
Serial I/O
SDTI
9 SDTO 3 Interface 8X 10
Interface
SCF
Interpolator Modulator 9
13 14 5
PDN DIF PDN
I J K
14.2 8
2
4.3
1
DAC 3 7.0
4
4.3 0
1.6 5.0
0.1
1.7
1.6
1.6 0
3.2
3.2
5
2.6
3.2 0 7
6 13.7
2.6
3.2
13.7
A/D
~
1.6 5.0
1.6 5.0 2.5
2.5
1.7 0
3.2 2.5
5.0 0
2.5
5.0 2.5
2.5
0 2.5
0
0
IC307-309: AK4121VF
Asynchronous Sample Rate Converter
PDN DEM0 DEM1 SMUTE TVDD VDD DNSS
(MCLK)
PDN
SDTO
Serial
Serial
ILRCK Audio Sample
VDD Audio OLRCK
I/F De-em soft
Rate I/F
filter
VSS Converter mute
IBICK OBICK
DZFL
DZFR
CMODE2
AVSS
AOUTL+
CMODE1
PLL
AOUTL-
FILT CMODE0
AOUTR+
AOUTR-
IDIF2 IDIF1 IDIF0 ODIF1 ODIF0
FILT 1 24 VDD
AVSS 2 23 DVSS
PDN 3 22 TVDD
SMUTE 4 21 MCLK
DEM0 5 20 OLRCK
MEM1 6 19 OBICK
ILRCK 7 18 SDTO
IBICK 8 17 ODIF1
SDTI 9 16 ODIF0
IDIF0 10 15 CMODE2
IDIF1 11 14 CMODE1
IDIF2 12 13 CMODE0
L M N
IC300: LC89057W-VF4-E
192kHz 24Bit 8ch DAC
DZF Audio 10 MCLK
I/F
LOUT1+ LRCK
2 17
SCF DAC DATT
LOUT1–
1 9 BICK
ROUT1+ 48 14 SDTI1
SCF DAC DATT
ROUT1– 15 SDTI2
47
16 SDTI3
LOUT2+ 46
SCF DAC DATT PCM
13 SDTI4
LOUT2–
45
Control
ROUT2+ 44
SCF DAC DATT 3-wire
Register
ROUT2– or 12C
43
LOUT3+ 42 22 DCLK
SCF DAC DATT
LOUT3– 41 25 DSDL1
26 DSDR1
ROUT3+ 40
SCF DAC DATT
27 DSDL2
ROUT3– 39
28 DSDR2
LOUT4+ 38 DSD
SCF DAC DATT DSDL3
29
LOUT4– 37
30 DSDR3
ROUT4+ 33
SCF DAC DATT 23 DSDL4
ROUT4– 32
24 DSDR4
IC301: SN74LV245APWR
Octal Bus Transceiver with 3-state Outputs
0.1
DIR 1 20 Vcc
0
2 19
A1 OE
A2 3 18 B1
4 17
A3 B2
A4 5 16 B3
6 15
A5 B4
A6 7 14 B5
8 13
A7 B6
A8 9 12 B7
10 11
GND B8
IC302: YSS948-VZ
Post Processor
ClkGen MicomIF
XI
PLL nMUTE
XO
ZEROFLG
Firmware download circuit Regiser
Internal operation clock nINT
nIC
STATUS7-0
Result of Status change detection
TEST
Bypass
to each control section
SDI SDO
Decoder
SDI3-0 SDO3-0
DSP
memory
SDIMCK SDOMCK
SDIBCK SDOBCK
SDIWCK SDOWCK
Dividing/Switcing
EMS
IC303: S-29630AFJA
CMOS SERIAL EEPROM
VCC
Memory array Address
decoder GND
Data register Output buffer DO
DI
Mode decode logic
CS
CS 1 8 VCC
SK 2 7 NC
SK Clock generator
DI 3 6 TEST
DO 4 5 GND
IC305: YSS930-SZ
DSP
MICROPROCESSOR
INTERFACE
PROGRAM COEFFICIENT ADDRESS
RAM RAM RAM
CONTROL REGISTER 50 bit 1024 16 bit 1024 17 bit 256
CONTROL
SIGNALS
SDBCK
SDWCK
SDI0 SDO0
SDI1
SDO1
SDI2 SDO2
SDI3
SDO3
32 bit DSP Core
SDI4 SDO4
SDI5 SDO5
SDI6 SDO6
SDI7 SDO7
DSP INTERNAL
OPERATING CLOCK
CK (30.72~40.96MHz)
EXTERNAL RAM
INTERFACE
PLL