BD3870FS ROHM Co. Ltd., BD3870FS Datasheet - Page 5

• Manufacturer Part Number: BD3870FS
• Description: Audio Sound Processor For Home Audio
• Manufacturer: ROHM Co. Ltd.

3)
Basic Configuration of Control Data Format
Control Data Format (BD3870FS, BD3871FS, BD3873FS)
Control Data Format (BD3872FS)
Control Data Format List
← Data input direction
← Data input direction
・* indicates 0 or 1.
・By changing the setting of Select Address, three or four different control formats (BD3871FS,
・In every power-on sequence, all of the address data must be initialized.
・After power-on, for the second and subsequent times, only the necessary data can be selected for
BD3872FS, BD3873FS, plus BD3872FS) are selectable.
setting.
Example: When changing the volume,
(1)
(2)
(3)
(4)
(1)
(2)
(3)
(4)
Example:
←Input direction
MSB
←Input direction
MSB
← Data input direction
Data(1)
Data(2)
“L” indicates a latch.
Input Selector
MSB
D9
D9
D9
*
*
LSB
Input Gain
LSB
D8
D8
D8
Bass Gain
Bass Gain
*
*
L
L
MSB
Volume A
Volume A
D7
D7
D7
Input Gain
*
*
Data(2)
5/16
“L” indicates a latch.
D6
D6
D6
LSB
*
*
Input Selector
Data
L
Surrou
D5
D5
D5
nd
MSB
*
*
Data(3)
D4
D4
D4
Treble Gain
Treble Gain
*
*
*
Volume B
Volume B
LSB
Surrou
D3
D3
D3
nd
L
*
*
*
MSB
Data(4)
SEQ
D2
D2
D2
*
*
*
*
*
LSB
D1
D1
D1
0
0
1
1
0
0
1
1
Address
L
Select
LSB
D0
D0
D0
0
1
0
1
0
1
0
1