EN 178
3139 785 31532
9.
Circuit- and IC Description
IC7408 - STV6618D - Video Switch Matrix
BLOCK
DIAGRAM
Sync Sep
Bo. Clamp
Y/CVBSIN_TUN
Y/CVBSIN_TV
Y/CVBSIN_AUX
CVBSIN_ENC
Bo. Clamp
G/YIN_AUX
R/Pr/CIN_AUX
B/PbIN_AUX
Sync Sep
Bo. Clamp
G/YIN_ENC
R/Pr/CIN_ENC
B/PbIN+ENC
YIN_ENC
CIN_TV
CIN_ENC
mute
0 dB
Y/CVBSOUT_REC
Y/CVBSIN_TUN
Y/CVBSIN_TV
Y/CVBSIN_A
UX
CVBSIN_ENC
YIN_ENC
CIN_TV
CIN_ENC
G/YIN_ENC
G/YIN_A
UX
R/Pr/CIN_A
UX
B/PbIN_A
UX
R/Pr/CIN_ENC
B/PbIN_ENC
STV6618D
Recorder
mute
6 dB
Y/CVBSOUT_TV
Scart1
mute
6 dB
Y/CVBSOUT_AUX
Scart2
mute
6 dB
R/Pr/COUT_TV
mute
6 dB
G/YOUT_TV
Scart1
Scart1
mute
6 dB
B/PbOUT_TV
Scart1
Y/CVBS_TUN
Y/CVBS_TV
Y/CVBS_A
UX
CVBSIN_ENC
YIN_ENC
CIN_TV
CIN_ENC
G/YIN_ENC
G/YIN_A
U
X
R/Pr/CIN_A
UX
B/PbIN_A
U
X
R/Pr/CIN_ENC
B/PbIN_ENC
0 dB
FBOUT_TV
SCL
FBIN_AUX
0v
5v
SDA
C_GA
TE
I2C bus
Bo. Clamp
Bo. Clamp
Bo. Clamp
Bo. Clamp
Av. Clamp
Av. Clamp
Bot/sync/av.
Bo/Sync
Bot/sync
Bot/sync/av.
CVBSIN_TUN
Y/CVBSIN_TV
Y/CVBSIN_AUX
CVBSIN_ENC
YIN_ENC
mute
6 dB
COUT_AUX
Y/CVBSIN_AUX
CVBSIN_ENC
YIN_ENC
CVBSIN_TUN
Y/CVBSIN_TV
CVBSIN_ENC
YIN_ENC
CIN__TV
CIN_ENC
CIN_ENC
R/Pr/CIN_AUX
R/Pr/CIN_ENC
G/YIN_AUX
G/YIN_ENC
B/PbIN_AUX
B/PbIN_ENC
FBIN_AUX
CIN_TUN
Av. Clamp
CIN_TUN
CIN_TUN
CIN__TUN
DigOUT1
DigOUT2
DigOUT3
DigOUT4
DigOUT5
DigOUT6
Figure 9-12