Emerson EWR20V4, Service Manual

Page: 75 / 91

1-15-3 E9400PIN
20
IN XCIN Sub Clock Input
21
OUT XCOUT Sub Clock Output
22
IN XIN Main Clock Input
23
OUT XOUT Main Clock Output
24 -
GND Ground
25
OUT PWSW Main Power Control Signal
26 -
N.U. Not Used
27 -
N.U. Not Used
28 -
N.U. Not Used
29 OUT S-CS
Communication of Select
with VCR Micro Controller
30 IN
S-DATA-
OUT Communication of Data
from VCR Micro Controller
31 OUT S-DATA-IN
Communication of Data to
VCR Micro Controller
32 OUT S-CLK
Communication of Clock
with VCR Micro Controller
33
OUT VCR/TV
RF Conv. ON/OFF Signal
(TV="L"/VIDEO="H")
34
OUT CONV-SW
RF Conv. Output Channel
Switching Signal 3ch=”Hi-
z”, 4ch=”L”
35 -
N.U. Not Used
36 -
N.U. Not Used
37 -
N.U. Not Used
38 -
N.U. Not Used
39
OUT V-MUTE Video Mute Control Signal
40
OUT
SYS-
RESET
System Reset Signal
41
IN RDY
Ready/Busy
Communication Control
with Main Micro Controller
42
IN FID
Video Presence Detector
Signal
43 -
N.U. Not Used
44 -
N.U. Not Used
45
OUT INSEL-0 Audio Input Select Signal
46
OUT INSEL-1 Audio Input Select Signal
47
OUT A-MUTE Audio Mute Control Signal
48 -
N.U. Not Used
49
IN RW-OEX For Flash Memory Writing
50
OUT
SUB-
SCLK Communication Clock with
Main Micro Controller
Pin
No. IN/
OUT
Signal
Name
Name Function
51
OUT SUB-TXD
Transmission Data to Main
Micro Controller
52 IN SUB-RXD
Reception Data from Main
Micro Controller
53
OUT SUB-SCL Serial Clock
54
IN/
OUT
SUB-SDA Serial Data
55 -
N.U. Not Used
56 -
N.U. Not Used
57
IN VCC +5V Power Supply
58
IN V-REF Reference Voltage
59 -
AVSS Ground
60 -
N.U. Not Used
61
OUT
REG-
CONT Power Regulator Control
Signal
62
IN AFT Tuner Voltage Input Signal
63
IN SDET-1
Aspect Ratio Detector
Signal
64
IN POW-SW
Abnormal Voltage
Detection
Pin
No.
IN/
OUT
Signal
Name
Name Function