參數(shù)資料
型號(hào): M52790FP
廠商: Mitsubishi Electric Corporation
英文描述: AV SWITCH with I2C BUS CONTROL
中文描述: AV系列開(kāi)關(guān)與I2C總線控制
文件頁(yè)數(shù): 5/9頁(yè)
文件大?。?/td> 132K
代理商: M52790FP
M I T S U B I S H I
- 9
MITSUBISHI ICs (AV COMMON)
M52790SP/FP
AV SWITCH with I2C BUS CONTROL
PRELIMINARY
Notice. This is not a final specification.
Some parametric limits are subject to change.
AUG.'98
5
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 .
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
A ; Acknownledge
CONTROL
This IC controls 2-channel switchs with 2-byte data ( DATA1 and DATA2 ) . SW1 is controled by
DATA1 ,SW2 is controled by DATA2 .
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 the
wired-AND function .
1
2
3
4
5
6
7
8
9
1
2
9
LSB
A
MSB
SDA
SCL
MSB
S
P
A
LSB
S
SLAVE ADDRESS A
DATA1
DATA2
P
A
A
S : Start
A : Acknowledge
P : Stop
SLAVE ADDRESS
1
0
0
1
0
0
X
0
R/W bit
Usually ` 0 ` ( W : Master transmitter transmits to slave
receiver )
Possible to select
20PIN Hi:1,Lo:0
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