Service manual

DV-L70S
DV-L70BL
DV-L70W
38
Pin No. Terminal name I/O Operation function
1 LRCIN I LRCK clock input (fs)
(3)
2 DIN I Data input
(3)
3 BCKI I Bit clock input for data.
4 CLKO O System clock buffered output.
5 XTI I Connection of crystal oscillator or external clock input.
6 XTO O Connection of crystal oscillator
7 DGND – Digital GND
8VDD – Digital power +5V
9VCC2R – Analog power +5V
10 AGND2R – Analog GND
11 EXTR O Rch Analog output amp. • common
12 NC – Not connected.
13 VOUTR O Rch Analog voltage output
14 AGND1 – Analog GND
15 VCC1 – Analog power +5V
16 VOUTL O Lch Analog voltage output
17 NC – Not connected.
18 EXTL O Lch Analog output amp. • common
19 AGND2L – Analog GND
20 VCC2L – Analog power +5V
21 ZERO O Zero data • flug
22 RSTB I Resetting. While this pin is in "L" state, the DF and delta -sigma modulator is in reset state.
(1)
23 CS/IWO I Chip selection/input format selection
(2)
24 MODE I Mode control selection (H: Software, L: Hardware)
(1)
25 MUTE I Mute control
(1)
26 MD/DM0 I Mode control data/deemphasis selection 1
(1)
27 MC/DM1 I Mode control BCK/deemphasis selection 2
(2)
28 ML/IIS I Mode control latch/input format selection
(1)
Note: (1) Pins 22, 24, 25, 26, 27, and 28: With Schmidt trigger input pull-up resistor (2) Pin 23: With Schmidt trigger input pull-down resistor
(3) Pins 1, 2, and 3: Schmidt trigger input
9-14. IC801 PCM1716E AUDIO D/A CONVERTER
• Block Diagram
BCKI
LRCIN
DIN
ML/IIS
MC/DM1
MD/DM0
CS/IWO
MODE
MUTE
RSTB
Sirial
Input
I/F
Mode
Control
I/F
XTI XTO CLKO
V
CC 1AGND1 DGNDV DD
Power
BPZ-Cont.
Crystal OSC
8-time oversampling
digital filter with
function controller
Multilevel
delta/sigma
modulator
DAC
20 19 9 10
DAC
Low-pass
filter
Low-pass
filter
V
OUT L
V
CC
2L
AGND2L V
CC
2R
AGND2R
EXTL
EXTR
V
OUT R
ZERO
Open Drain
16
18
13
11
21
784651415
22
25
24
23
26
27
28
2
1
3