Akai DV-R4000SS Service Manual page 35

U2 ZR36708PQC
PLL data EQ data
Interpolator Equalizer
Width
Measurer
PLL offset
AGC
ADC data
PLL rate
U10 WM8772EDS
VREFN VREFP
STEREO
DAC
VREFN
AINL AUDIO
STEREO STEREO
INTERFACE
DAC DAC
AINR & DIGITAL FILTERS
CONTROL INTERFACE
U5 SST39VF800A
X-Decoder
Memory Address
Address Buffer & Latches
CE#
OE# Control Logic
WE#
IC605 BD3814FV
Reconstructed
data
Viterbi
INP1
Algorithm
INN1
Threshold
OUT1
Edge
flag/pos
AGND1
Threshold
INP2
Defect
INN2
DPLL
OUT2
Lock
MUX
AGND2
Defect
Frequency
Detector
INSW
AGND3
Defect
Detector
INSR
AGND4
INSL
AGND5
INC
AGND6
INFR
VOUT1L
LOW
PASS
AGND7
FILTER VOUT1R
INFL
VOUT2L
LOW
PASS
VEE
FILTER VOUT2R
VOUT3L
LOW
STEREO
PASS
DAC
FILTER VOUT3R
U9 TC74HC04AF
1
1A
2
1Y
2A 3
EEPROM
Cell Array 4
2Y
3A 5
Y-Decoder
6
3Y
I/O Buffers and Data Latches 7
GND
DQ - DQ
15 0
65
1 40
2 39
MASTER
- +
VOLUME
3 38
0~-95dB
1dB/step, MUTE
4 37
5 36
6 35
Ri=20KΩ
- +
7 34
8 33
Ri=20KΩ
9 32
10 31
Ri=20KΩ
11 30
12 29
13 28
Ri=20KΩ
14 27
15 26
16 25
BASS
17 24
Ri=20KΩ
18 23
19 22
TREBLE
Ri=20KΩ
20 21
14
Vcc
U1 TL3472CD/TK3742
13 6A
1 OUT 1
6Y
12
2
1IN-
11
5Y
1IN+ 3
10 5Y
V /GND 4
CC-
9 4A
8 4Y
IC403 BU1923F/BU1924F
AGND10
4
MUX
VCC -
+
AGND9
anti-aliasing
filter
CL
VREF 3
DA
VDD1 5
ANALOG
MUTE
POWER SUPPLY
DGND
VSS1 6
PLL
PLL
57KHz
1187. 5Hz
AGND8
VDD2
12 RDS/ARI
DIGITAL
POWER BUPPLY
OUTSW
VSS2 11
OUTSR
REFERENCE
CLOCK
OUTSL
13
14
OUTC
XI XO
OUTFR
U17, U18 LD1117S33C
OUTFL U19 LD1117S
BNF2L
BNF1L
BNF2R
BNF1R
TNFL
TNFR
Thermal
Limit
GND (FIXED OUTPUT)
ADJ. (ADJUSTABLE OUTPUT)
8 V
C C +
IC802, IC803 BA05ST
2 OUT
7
VCC
REFERENCE
2
2 IN-
6
VOLTAGE
CTL
1
2 IN+
5
GND
3
66
CMP
VSS3
7 8
8th switched
capacitor filter
comparator
RCLK
16
QUAL
1
DIPHASE
DIFFERENTAL
RDATA
DECODER
DECODER 2
MEASAREMENT
CIRCUIT
10 9
T1 T2
V
IN
-
+
+
Current
Limit
V
OUT
Substrate
-
+ OUT
4
+
C
5