Sony STR-DB870 - Page 54

54
STR-DB870/DB1070
• VIDEO BOARD IC307 MB90089F-G-238-BND (OSD DRIVER)
Pin No. Pin Name I/O Description
1
YIN I
Y (luminance) signal input from the Y switch (IC752)
2 CIN I
C (color) signal input from the C switch (IC750)
3 VIN I
Composite video signal input from the video select (IC308)
4AVCC—
Power supply terminal (+5V) (for analog)
5 FSCO O
Internal color burst phase display signal output terminal Not used (open)
6 VBLK O
Vertical blanking timing signal output terminal Not used (open)
7 VCC —
Power supply terminal (+5V)
8 EXS I
External clock generator circuit for color burst
(NTSC: 14.31818MHz, PAL: 17.734475MHz)
9XSO
Clock signal output terminal for color burst Not used (open)
10 HSYNC O
Horizontal synchronizing signal output terminal (for test)
11
VSYNC O
Vertical synchronizing signal output terminal (for test)
12
EXHSYN I
External horizontal synchronizing signal input terminal Not used (open)
13
EXVSYN I
External vertical synchronizing signal input terminal Not used (open)
14
VSS —
Ground terminal
15
EXD I
Dot clock generator connecting terminal for display
16
XD O
Dot clock generator connecting terminal for display
17
VOB O
Blanking signal output terminal Not used (open)
18 VOC2 O
color signal output terminal Not used (open)
19
VOC1 O
color signal output terminal Not used (open)
20
VOC0 O
color signal output terminal Not used (open)
21
TEST I
Test signal input terminal “L”: test (normally: fixed at “H”)
22 SCLK I
Serial data transfer shift clock signal input terminal
23
SIN I
Serial data input terminal
24
CS I
Chip select signal input terminal “L”: active
25
VOUT O
Composite video signal output to the video buffer (IC305)
26
COUT O
C (color) signal output to the video buffer (IC305)
27
YOUT O
Y (luminance) signal output to the video buffer (IC305)
28
AVSS —
Ground terminal (for analog)