
MITSUBISHI ICs (AV COMMON)
AV SWITCH with I2C BUS CONTROL
PRELIMINARY
Some parametric limits are subject to change.
RECOMMENDED OPERATING CONDITION
PIN CONFIGURATION ( TOP VIEW )
17183635343332313022232425262728292120
17183635343332313022232425262728292120
Notice. This is not a final specification.
The M52790 is AV switch semiconductor integrated circuit with
I2C bus control .
This IC contains 2-channels of 4-input audio switches and 2channels of 4-input video switches. Each channel can be
controled independently .
The video switches contain amplifiers can be controled a gain
•Video and stereo sound switches in one package
•Wide frequency range ( video switch )...........DC~20MHz
•High separation ( video switch )
.................Crosstalk -60dB ( typ. ) at 1MHz
•Two types of packages are provided : SDIP with a lead pitch of
1.778mm ( M52790SP ) ; and SSOP with a lead pitch of 0.8mm
( M52790FP ) .
PIN CONFIGURATION ( TOP VIEW )
VCC
Lch T IN
C 2 IN
Rch 2 IN
Y 2 IN
VIDEO 3 IN
Rch 3 IN
Lch 4 IN
C 4 IN
Y 4 IN
SCL
Outline 36P4E
(Lead pitch :1.778mm)
Y IN
V 1 OUT
Rch 1 OUT
Y 1 OUT
Lch 2 OUT
Rch 2 OUT
BIAS
Supply voltage 4.7V ~ 9.3V
Rated supply voltage 5V,9V
Maximum output current 63mA(at 9V)
VCC
C 2 IN
Rch 2 IN
Y 2 IN
VIDEO 3 IN
Rch 3 IN
Lch 4 IN
C 4 IN
Y 4 IN
SCL
Outline 36P2R-D
Lch T IN
Y IN
V 1 OUT
Rch 1 OUT
Y 1 OUT
Lch 2 OUT
Rch 2 OUT
BIAS
AUG.'98

MITSUBISHI ICs (AV COMMON)
AV SWITCH with I2C BUS CONTROL
PRELIMINARY
Some parametric limits are subject to change.
23456789101112131415161718192021222324252627282930313233343536
Notice. This is not a final specification.
1
Y/C
S
BIAS
2
2
AUG.'98

MITSUBISHI ICs (AV COMMON)
AV SWITCH with I2C BUS CONTROL
PRELIMINARY
Some parametric limits are subject to change.
Notice. This is not a final specification.
DESCRIPTION OF PIN
Pin No.
1
33
DC voltage(V)
9V
5~9V
Clamp in
VIL max.=1.5V
VIH min.=3.0V
VIL max.=1.5V
VIH min.=3.0V
VOL max.=0.4V
(at Iin=3mA)
AUG.'98

MITSUBISHI ICs (AV COMMON)
AV SWITCH with I2C BUS CONTROL
PRELIMINARY
Some parametric limits are subject to change.
Notice. This is not a final specification.
DESCRIPTION OF PIN (cont.)
19
DC voltage(V)
CHIP
SLAVE
ADDRESS
0~1.5V-------90H
2.5~Vcc------92H
OPEN--------90H
SYNC CHIP
24
4.0V
AUG.'98

MITSUBISHI ICs (AV COMMON)
AV SWITCH with I2C BUS CONTROL
PRELIMINARY
Some parametric limits are subject to change.
DATA1 ,SW2 is controled by DATA2 .
Notice. This is not a final specification.
I C BUS
I C BUS(Inter IC BUS)is multi master bus system developed by PHILIPS . Two wires ( SDA - serial data,
SCL - serial clock ) realize functions of start , stop , transferring data , synchronization and arbitration. The
output stages of device connected to the bus must have an open drain or open collector in order to perform
A
LSB
SCL
S
1
S ; Start condition, a high to low transition of the SDA line while SCL is high
P ; Stop condition, a low to high transition of the SDA line while SCL is high
Every byte put on the SDA line must be 8-bits long . Each byte has to be followed by an acknowledge bit. Data
is transferred with the most significant bit (MSB ) first . The data on the SDA line must be stable during the
HIGH period of the clock . The HIGH or LOW state of the data line can only change when the clock signal on
the SCL line is LOW .
MSB
P
CONTROL
This IC controls 2-channel switchs with 2-byte data ( DATA1 and DATA2 ) . SW1 is controled by
SLAVE ADDRESS
S : Start
A : Acknowledge
DATA1
0
P
A
R/W bit
Usually ` 0 ` ( W : Master transmitter transmits to slave
Possible to select
20PIN Hi:1,Lo:0
AUG.'98

MITSUBISHI ICs (AV COMMON)
AV SWITCH with I2C BUS CONTROL
PRELIMINARY
Some parametric limits are subject to change.
Notice. This is not a final specification.
AUG.'98

MITSUBISHI ICs (AV COMMON)
AV SWITCH with I2C BUS CONTROL
PRELIMINARY
Some parametric limits are subject to change.
IccmAVcc=9V,Vin=0Vp-p,Rl=∞Ω
63835471(Ta=25°C,Vcc=9V,unless otherwise noted)
ELECTRICAL CHARACTERISTICS
Frequency characteristics
Total harmonic distortion
Notice. This is not a final specification.
Circuit current
Frequency
characteristics
Symbol
Vcc
G
Vcc=5V,Vin=0Vp-p,Rl=∞Ω
f=100kHz,1Vp-p (0dB)(T V1OUT)
f=100kHz,1Vp-p (6dB)(T V1OUT)
f=100kHz,1Vp-p (0dB)(Y V1OUT)
f=100kHz,1Vp-p (6dB)(Y V1OUT)
f=10MHz/100kHz,1Vp-p (0dB)(T V1OUT)
f=10MHz/100kHz,1Vp-p (6dB)(T V1OUT)
f=10MHz/100kHz,1Vp-p (0dB)(Y V1OUT)
f=10MHz/100kHz,1Vp-p (6dB)(Y V1OUT)
Vcc=9V(0dB)(T V1OUT)
Vcc=5V(0dB)(T V1OUT)
Vcc=9V(0dB)(Y V1OUT)
f=100kHz
Maximum
with
distortion
Min.
5.5
5.5
-2.0 0
-2.0
-2.0 0
-2.0 0
Typ.
9.3
6.5
6.5
Input impedance
AUDIO
Voltage gain
Output DC offset voltage
Crosstalk
ZIC
ZIV
ZIY
THD
VOFF
Z1
Vcc=5V(0dB)(Y V1OUT)
(C,C2,C3,C4)
Clamp in(T,V2,V3,V4)
Clamp in(Y,Y2,Y3,Y4)
f=1MHz,1Vp-p T V1OUT (at V2 mode)
f=1kHz ,1Vp-p (Vcc9V)(RT R1OUT)
f=1kHz ,1Vp-p (Vcc5V)(RT R1OUT)
f=100kHz/1kHz , 1Vp-p(RT R1OUT)
f=1kHz,2Vp-p,at 400HzHPF+30kHzLPF
(RT R1OUT)
f=1kHz ,Maximum with distortion<0.5%
(RT R1OUT)
(MODE:RT,R2,R3,R4 R1OUT )
(RT,R2,R3,R4,LT,L2,L3,L4 )
1kHz,1Vp-p RT R1OUT(at R2 mode)
-0.5
-2.0
-20
kΩ
-60
0.5
0.05
Vp-p
AUG.'98

MITSUBISHI ICs (AV COMMON)
AV SWITCH with I2C BUS CONTROL
PRELIMINARY
Some parametric limits are subject to change.
(Ta=25°C,Vcc=9V,unless otherwise noted)
ELECTRICAL CHARACTERISTICS
Time of bus must be free before
Hold time at start condition
The high period of the clock
Rise time of both SDA and SCL line
Setup time for stop condition
a new transmission can start
Notice. This is not a final specification.
Parameter
Min. input low voltage
Low level output voltage(SDA)
High level input current
SCL clock frequency
The low period of the clock
Setup time for start condition
Setup time DATA
VIH
VIL
VOL
IIH
IIL
fSCL
tBUF
tHD;STA
tLOW
tHIGH
tSU;STA
tHD;DAT
tSU;DAT
tR
Test condition
SDA = 3mA
SDA , SCL = 0.4 V
0.0
-10
4.7
4.7
4.7
250
Max.
5.0
0.4
100
Unit
µA
µS
nS
Fall time of both SDA and SCL line
SCL
S
tF
tSU;STO
300
-
µS
8
AUG.'98

MITSUBISHI ICs (AV COMMON)
AV SWITCH with I2C BUS CONTROL
PRELIMINARY
Some parametric limits are subject to change.
Application Circuit Example
3534333231302223242526272829212019234567151413121110981617181
0.01µ75757575757575757575
Notice. This is not a final specification.
VCC
36
Y/C
5V
Note how to use this IC
Input signal with sufficient low impedance to input terminal.
The capacitance of output terminal as small as possible.
Set the capacitance between Vcc and GND near the pins if possible.
Assign an area as large as possible for grounding.
Power-on Reset
The M52790 has an intermal power-on reset function that sets each
control register to "0" during IC power ON.
The power-on reset VTH has 2.5V.
slave address Change(VCC/GND)
9
AUG.'98