DVX-11B
26
26
•
IC Block Diagrams
– MAIN Board –
IC101
BA9743AFV-E2
IC401
PCM1751DBQR
IC501
MM1567AJBE
VCC
+
–
+
–
+
–
+
+
–
+
13
12
11
10
9
14
ERROR AMP 2
PWM COMP1
PWM COMP2
15
R
U.V.L.O.
S R
TIMER LATCH
VREF
16
–
+
+
S.C.P. COMP
7
6
5
4
3
ERROR AMP 1
TRIANGLE
OSCILLATOR
2
1
VREF
SCP
NON2
INV2
FB2
OUT2
DT2
CT
RT
NON1
INV1
FB1
DT1
OUT1
GND 8
VREF
VREF
REFERENCE
VOLTAGE
SCK
1 2 3
7 8
4
5
6
SERIAL
INPUT
INTERFACE
10
9
BCK
DATA
LRCK
VOUTL
VOUTR
DGND
VDD
VCC
VCOM
AGND
FUNCTION
CONTROL
INTERFACE
SYSTEM
CLOCK
MANAGER
8 TIME OVER
SAMPLING
DIGITAL FILTER
WITH
FUNCTION
CONTROLLER
ENHANCED
MULTI-LEVEL
DELTA-SIGMA
MODULATOR
D/A
CONVERTER
D/A
CONVERTER
OUTPUT AMP AND
LOW-PASS FILTER
OUTPUT AMP AND
LOW-PASS FILTER
ZERO DETECT
POWER SUPPLY
12
11
ZEROL
ZEROR
15
14
ML
MC
16
13
MD
SYSTEM
CLOCK
4dB
4dB
VCC2
75
Ω
DRIVER
LPF
LPF
LPF
75
Ω
DRIVER
2dB
4dB
2dB
75
Ω
DRIVER
2dB
75
Ω
DRIVER
2dB
4dB
75
Ω
DRIVER
2dB
4dB
75
Ω
DRIVER
4dB
2dB
CIN
2
VIN
4
MUTE1
3
YC MIX
5
YIN
6
BIAS
7
GND1
8
NC
9
GND1 10
NC 11
CYIN 12
CLP 13
CbIN 14
CrIN 16
GND2 17
MUTE2 15
VCC1
1
34
CrSAG
18
CrOUT
19
CbSAG
21
GND2
20
CbOUT
22
CYSAG
24
GND2
23
GND2
26
CYOUT
25
YSAG
27
YOUT
28
VSAG
30
GND2
29
GND2
32
VOUT
31
COUT
33
+
BIAS
BIAS
BIAS
BIAS
BIAS
CLAMP
CLAMP
CLAMP
LPF
LPF
LPF