BD3812F-E2 Rohm Semiconductor, BD3812F-E2 Datasheet - Page 5

• Manufacturer Part Number: BD3812F-E2
• Description: IC SOUND PROCESSOR 2CH 14SOP
• Manufacturer: Rohm Semiconductor
• Type: Sound Processorr

Specifications of BD3812F-E2

• Applications: Home Theater
• Mounting Type: Surface Mount
• Package / Case: 14-SOP (4.4mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

BD3812F
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4) SEL terminal setting
By determining the SEL terminal voltage, select address can be fixed.
An example of the SEL terminal voltage setting method is shown below.
SEL terminal voltage is DGND standard.
When to use several chips of BD3812F
Select address can be changed by setting SEL terminal (12pin), therefore, up to 4 chips can be used on a same bus line.
When to use one chip or two chips of this IC, use the setting 1 and the setting 4. In this case, the terminal voltage of 12pin
may be VCC or VEE, therefore external resistor of 12pin is unnecessary.
When to use BD3812F and BD3811K1 at the same time
By using BD3812F and BD3811K1 at the same time, independent control of 8ch volume can be made. And control is
available on a same bus line. In this case, be sure to set the SEL terminal setting to “setting 4”.
Setting 1
Setting 2
Setting 3
Setting 4
Setting
Condition
VCC
VCC
VCC
VEE
P1
Condition
VEE
VEE
P2
－
－
12
12
12
12
SEL(12pin) Terminal
Setting of
20k
10k
10k
20k
P1
5/9
P1
P1
P2
P1
P2
VEE
VCC
VCC
VEE
VEE
VCC
Terminal Voltage(V)
VCC/3+2×VEE/3
SEL(12pin)
VCC/3
VCC
VEE
Technical Note
2010.06 - Rev.A
Select Address
D2
0
0
1
1
D1
0
1
0
1