Sharp DX-SX1H, Service Manual

Page: 44 / 76

DX-SX1H
– 44 –
IC302 VHiDSD1700E-1: DSD Converter (DSD1700E)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not
connected to the outside.
1 DGND — Digital ground
2 VDD — Digital power supply, +5V
3 RST Input Reset control input, active at LOW
4* PHASE Input Select data phase
(LOW: through, HIGH: inversion)
5 AGND — Analog ground
6 VCC — Analog power supply, +5V
7 AGND — Analog ground
8,9 VCC — Analog power supply, +5V
10 AGND — Analog ground
11 VCC — Analog power supply, +5V
12 AGND — Analog ground
13 I
OUT
HN Output Analog output from DAC (Hot negative)
14 I
OUT
CP Output Analog output from DAC (Cold positive)
15 I
OUT
CN Output Analog output from DAC (Cold negative)
16 I
OUT
HP Output Analog output from DAC (Hot positive)
17,18 AGND — Analog ground
19 VCC — Analog power supply, +5V
20 AGND — Analog ground
21,22 VCC — Analog power supply, +5V
23 AGND — Analog ground
24 VCC — Analog power supply, +5V
25 AGND — Analog ground
26 DATA Input Direct stream digital data input
27 DCK Input Data clock input
28 SCK Input System clock input
Pin No. Terminal Name Input/Output Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
19
20
21
22
23
24
25
26
27
28
18
17
16
15
DGND
V
DD
RST
PHASE
AGND
V
CC
AGND
V
CC
V
CC
AGND
V
CC
AGND
I
OUT
HN
I
OUT
CP
SCK
DCK
DATA
AGND
V
CC
AGND
V
CC
V
CC
AGND
V
CC
AGND
AGND
I
OUT
HP
I
OUT
CN
DSD I/F
PHASE
I
OUT
HP
I
OUT
HN
I
OUT
CP
I
OUT
CN
DATA
RST
DSK
SCK
DGND
AGND
V
DD
V
CC
ANALOG FIR
(HOT/P)
ANALOG FIR
(HOT/N)
ANALOG FIR
(COLD/P)
ANALOG FIR
(COLD/N)
DUTY
GENERATOR
DUTY
GENERATOR
POWER
SHIFT
REGISTER
(HOT)
SHIFT
REGISTER
(COLD)
TIMING
GENERATOR
Figure 44 BLOCK DIAGRAM OF IC