1-38 (No.22023)
6.15 LA73054-X (IC401) : Video driver
• Pin layout & Block diagram
• Pin function
Pin No.
Symbol
I/O
Function
1
VCC1
-
VCC except for 75ohm driver
2
COMPOSITE.IN
I
Input composite
3
SQUEEZE.SW
I
Selecting squeeze mode
4
LETTER-BOX.SW
I
Selecting letter-box mode
5
MUTE-SW-1
I
Composite/S signal mute selection
6
C-IN
I
Input Chroma signal
7
GND11
-
Composite/S GND except for 75ohm driver
8
Y-IN-1
I
Input Y signal
9
YC-MIX.SW
I
Selecting of doing Y/C-MIX or not
10
SIGNAL-IN.SW
I
Selection of a kind of signal
11
Y-IN-2
I
Input component Y or baseband signal
12
MUTE-SW-2
I
Component signal mute selection
13
LPF.SW
I
Selection of a kind of component LPF
14
CB.IN
I
Input component or baseband signal
15
AMP.SW-2
I
Selecting amplifier gain for component signal
16
CR.IN
I
Input component or baseband signal
17
GND12
-
Component GND except for 75ohm driver
18
REG
O
Capacitor terminal for regulator
19
DRIVE.SW-2
I
2drive/1drive select for component signal
20
GND26
-
CR-GND for 75ohm driver
21
CR.OUT
O
75ohm driver output of pin16 input
22
GND25
-
CB-OUT for 75ohm driver
23
CB.OUT
O
75ohm driver output of pin14 input
24
VCC22
-
Component Vcc for 75ohm driver
25
Y-OUT-2
O
75ohm driver output of pin11 input
26
GND24
-
Component Y out for 75ohm driver
27
GND23
-
Y out for 75ohm driver
28
Y-OUT-1
O
75ohm driver output of pin8 input
29
GND22
-
Chroma out for 75ohm driver
30
C-DC.OUT
O
DC voltage output for S1,S2
31
C-OUT
O
75ohm driver output of pin6 input
32
GND21
-
Composite out for 75ohm driver
33
COMPOSITE-OUT
O
75ohm driver output of pin2 input
34
VCC21
-
Composite/S Vcc for 75ohm driver
35
DRIVE.SW-1
I
2drive/1drive select for composite/S signal
36
AMP.SW-1
I
Selecting amplifier gain for composite/S signal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
CLAMP
C_OFFSET
DC_CTL
2Step
Amp1
LPF
75
DRIVER
2Step
Amp2
LPF1
75
DRIVER
CLAMP
2Step
Amp3
LPF1
75
DRIVER
Y/C
MIX
CLAMP
PEDESTAL
CLAMP
2Step
Amp4
LPF1
LPF2
75
DRIVER
SYNC
SEP
PEDESTAL
CLAMP
PEDESTAL
CLAMP
2Step
Amp5
2Step
Amp6
LPF1
LPF2
LPF1
LPF2
75
DRIVER
75
DRIVER
REG
VCC