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參數(shù)資料
| 型號(hào)： | MM1492AF |
| 廠商： | MITSUMI ELECTRIC CO LTD |
| 元件分類： | 運(yùn)動(dòng)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(yè)數(shù)： | 12/14頁(yè) |
| 文件大?。?/td> | 366K |
| 代理商： | MM1492AF |
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MITSUMI
I
2
C BUS Controlled 5-Input 2-Output AV Switch MM1492AF
[Status registers]
Status registers are data to inform the device status.
The data format is set as shown in the following figure.
S
Slave address
0
1
R/W
1
A
Status register
b5
b4
NA
P
1
0
0
0
0/1
b7
b6
b3
b2
b1
b0
Address byte
device status
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 1 when data are used status registers.
As MM1492 slave address, either 91H or 93H can be selected according to the ADR terminal conditions.
When ADR terminal is L, 91H is selected.
Set the confirmation acknowledgement after the end of status register to non
-
acknowledgement.
The following figure shows the correspondence of the output data of status registers.
b7
b6
b5
S1
b4
S1
SEL
b3
S2
b2
S2
SEL
b1
b0
P-ON
RESET
OPEN
OPEN
P-on RESET
:
1 returns when the power on reset is done, 0 returns after reading data once.
S1
/
S2 OPEN
:
S1/S2 OPEN and SEL are identified by 3 values, and output according to the
S1/S2 SEL combinations in the following table.
DC voltage of S1/S2
0.8V
<
DC
1.3V
<
DC
<
3.5V
DC
<
4.5V
S1/S2 OPEN
0
0
1
S1/S2 SEL
1
0
0
[about power on reset]
MM1492 is provided with a power on reset function to reset each control register to 0 when power supply is
turned on.
The power on reset threshold has the hysteresis as shown in following figure.
Reset
off
Reset
on
4.3V
5.4V
V
CC
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