MITSUMI
AV Switch for I
2
C BUS Control, 4-input, 3-output and Canal Plus Compatible MM1422, 1423, 1442, 1443
AV Switch for I
2
C BUS Control, 4-input, 3-output
and Canal Plus Compatible
Monolithic IC MM1422, 1423, 1442, 1443
Outline
These ICs are four-input, three-output AV switches under I
2
C BUS control with Canal Plus support, intended
for use in VCRs and DVD for the European market. There are four models, described below. Audio
subsystems are either stereo or monaural; video subsystems either do or do not have a clamping circuit.
Features
1. I
2
C BUS serial control.
2. Internal two-output 75Ωvideo driver, internal two-output 600Ω audio driver.
3. Audio mute function through an external pin.
4. Operating power supply voltage
11 to 13 V
5. Models both with and without video subsystem clamp.
6. Models with monaural and stereo audio subsystems.
Package
SSOP-34A (MM1443XJ)
SDIP-32A (MM1443XD)
Applications
(1)VCRs with Canal Plus Support for the European Market.
(2)DVD
Series Table
Video input
clamp
MM1422
MM1423
MM1442
MM1443
Stereo
Monaural
Package
SDIP-32A SSOP-34A
MITSUMI
AV Switch for I
2
C BUS Control, 4-input, 3-output and Canal Plus Compatible MM1422, 1423, 1442, 1443
Pin Assignment
MM1443XJ
34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
SSOP-34A
1
2
3
4
5
6
7
8
9
E1-V
V
CC
2
E2-V
V
CC
1
EXT-V
EXT-L
BIAS
E2-L
Mute
10
11
12
13
14
15
16
17
18
E1-L
FS
EXT-R(N.C.)
Port1
E2-R(N.C.)
Port2
E1-R(N.C.)
NC
NC
19
20
21
22
23
24
25
26
27
GND1
TUN-R(N.C.)
R
OUT
3(N.C.)
R
OUT
2(N.C.)
R
OUT
1(N.C.)
TUN-L
L
OUT
3
L
OUT
2
L
OUT
1
28
29
30
31
32
33
34
TUN-V
V
OUT
3
V
OUT
2
V
OUT
1
SDA
SCL
GND2
MM1443XD
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
SDIP-32A
1
2
3
4
5
6
7
8
E1-V
V
CC
2
E2-V
V
CC
1
EXT-V
EXT-L
BIAS
E2-L
9
10
11
12
13
14
15
16
Mute
E1-L
FS
EXT-R(N.C.)
Port1
E2-R(N.C.)
Port2
E1-R(N.C.)
17
18
19
20
21
22
23
24
GND1
TUN-R(N.C.)
R
OUT
3(N.C.)
R
OUT
2(N.C.)
R
OUT
1(N.C.)
TUN-L
L
OUT
3
L
OUT
2
25
26
27
28
29
30
31
32
L
OUT
1
TUN-V
V
OUT
3
V
OUT
2
V
OUT
1
SDA
SCL
GND2
MITSUMI
AV Switch for I
2
C BUS Control, 4-input, 3-output and Canal Plus Compatible MM1422, 1423, 1442, 1443
Block Diagram
Stereo type (MM1423, MM1443)
Monaural type (MM1422, MM1442)
MITSUMI
AV Switch for I
2
C BUS Control, 4-input, 3-output and Canal Plus Compatible MM1422, 1423, 1442, 1443
Introduction of Main Model
AV Switch for I
2
C BUS Control, 4-input, 3-output
and Canal Plus Compatible
Monolithic IC MM1443
Pin Description
Pin No. Pin name
1
3
5
28
E1-V
E2-V
EXT-V
TUN-V
Video input pin
Functions
Equivalent circuit diagram
2
4
13
15
V
CC
2
V
CC
1
Port1
Port2
V
CC
2 is power supply voltage pin for
75Ω driver
Port output pin
6
8
10
12
14
16
20
24
7
EXT-L
E2-L
E1-L
EXT-R
E2-R
E1-R
TUN-R
TUN-L
BIAS
Audio input pin
Bias pin
MITSUMI
AV Switch for I
2
C BUS Control, 4-input, 3-output and Canal Plus Compatible MM1422, 1423, 1442, 1443
Pin No. Pin name
9
Mute
Mute pin
Functions
Equivalent circuit diagram
19
34
11
GND1
GND2
FS
GND2 is a GND pin for 75Ω driver
FS output pin
21
22
25
26
R
OUT
3
R
OUT
2
L
OUT
3
L
OUT
2
Audio driver output pin
23
27
R
OUT
1
L
OUT
1
Audio buffer output pin
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