Sharp DV-760X, Service Manual, Page: 41 / 76

DV-760X
11-25
11-19. IC6501 LC8905V DIGITAL AUDIO INTERFACE
Pin No. Terminal name I/O Operation function
1 DIN1 I Amplifier built-in data input terminal (coaxial, corresponding to optical module)
2 DIN2 I Data input terminal (corresponding to optical module)
3 E/DOUT O Emphasis, input biphase, validity flag output terminal
4 VDD Power
5 R I VCO gain control input terminal
6 VIN I VCO free run setting input terminal
7 VCO O LPF setting terminal of PLL
8 GND Grounding
9 CKSEL I System clock selection input terminal
10 XMODE I Reset input terminal
11 AVOCK I PLL erroneous lock prevention clock input terminal
12 TEST1 I Test input terminal (to be grounded usually)
13 TEST2 I Test input terminal (to be grounded usually)
14 SCLK/CL I Microcomputer IF Clock input terminal
15 XLAT/CE I Microcomputer IF latch/chip enable input terminal
16 SWDT/DI I Microcomputer IF write data input terminal
17 SRDT/DO O Microcomputer IF read data output terminal
18 DQSY/LD O Microcomputer IF Sub-Q sync and ID sync output terminal
19 CKOUT O VCO clock output terminal (Self-run oscillation 384fs, 512fs)
20 FS128 O 128fs clock output terminal
21 BCK O Bit clock output terminal
22 LRCK O L/R clock output terminal (L-ch=H, R-ch=L)
23 DATAOUT O Audio data output terminal
24 ERROR O PLL lock error mute output terminal
• Block Diagram
Microcomputer interface
C-Bit detection
Input
section
Data
demodulator
Lock error detection
Mute output
Timing
PLL
TEST
Sub-Q detection
SCLK/CL 14
15
16
1
2
3
XLAT/CE
SWDT/DI
DIN1
DIN2
E/DOUT
CKSEL
AVOCK
R
VIN
VCO
DQSY/LD
SRDT/DO
ERROR
DATAOUT
SFS128
LRCK
BCK
CKOUT
TEST1
TEST21
XMODE
9
5
6
7
11
18
17
24
23
20
22
21
19
12
13
10