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參數(shù)資料
| 型號： | MM1492 |
| 廠商： | MITSUMI ELECTRIC CO LTD |
| 元件分類： | 運動控制電子 |
| 英文描述： | I2C BUS Controlled 5-Input 2-Output AV Switch |
| 中文描述： | 5-CHANNEL, AUDIO/VIDEO SWITCH, PDSO44 |
| 封裝： | SOP-44 |
| 文件頁數(shù)： | 11/14頁 |
| 文件大小： | 366K |
| 代理商： | MM1492 |
MITSUMI
I
2
C BUS Controlled 5-Input 2-Output AV Switch MM1492AF
I
2
C BUS
SDA
SCL
S:Start Condition
P:Stop Condition
A:Acknowledge
S
3
8
A
2
1
A
8
7
6
5
4
3
2
1
P
I
2
C BUS is inter bus system controled by 2 lines (SDA, SCL).
Data are transmitted and received in the units of byte and Acknowledge.
It is transmitted by MSB first from the Start conditions.
[Control registers]
Control registers are data sent from the master for determining the switch conditions.
The data format is set as shown in the following figure.
Out of the Address byte, first 7bit are assigned to the slave address, while the residual 1bit is assigned to the
R/W bit.
Set the R/W bit to 0 when data are used control registers.
As MM1492 slave address, either 90H or 92H can be selected according to the ADR terminal conditions.
When ADR terminal is L, 90H is selected.
The following figure indicates the control contents of control registers and switches.
Each bit of control registers is reset to 0, when power
-
on.
Register
b7
b6
b5
b4
b3
b2
b1
b0
1
Audio Gain 1
Audio Gain 2
S/Comp select 1
S/Comp select 2
Video out1 select
Video out2 select
Audio out1 select
Audio out2 select
2
MM1492 consists of one address byte and two control data bytes (3bytes in total).
All data over the limited length (4th and subsequent bytes) are fully neglected.
For details of the control contents of switches, refer to the separate table.
A
Control register 1
b5
b4
b7
b6
b3
b2
b1
b0
A
Control register 2
b5
b4
A
P
b7
b6
b3
b2
b1
b0
S
Slave address
0
1
R/W
0
1
0
0
0
0/1
Address byte
Control data
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| MM1-4-92-415-2-1JA-B-C | 制造商:Carling Technologies 功能描述:M-SERIES CIRCUIT BREAKER - Bulk |
| MM1492AF | 制造商:MITSUMI 制造商全稱:Mitsumi Electronics, Corp. 功能描述:I2C BUS Controlled 5-Input 2-Output AV Switch |
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