BD3401KS2 ROHM Co. Ltd., BD3401KS2 Datasheet - Page 14

• Manufacturer Part Number: BD3401KS2
• Description: Single Power Supply Sound Processor Built-in Pre Amplifier For Tape Recording And Play Back
• Manufacturer: ROHM Co. Ltd.

10. Start-up sequence of the power supplies
11. Function switching
12. Power-ON Reset
7. Operation in strong electromagnetic field
8. Serial control
9. Power ON/OFF
6. Short circuit between terminals and erroneous mounting
Using the ICs in a strong electromagnetic field can cause operation malfunction.
Pay attention to the assembly direction of the ICs. Wrong mounting direction or shorts between terminals, GND, or other
components on the circuits, can damage the IC.
For the SC and SI terminals, the wiring and layout patterns should be routed as not to cause interference with the
analog-signal-related lines.
At power ON/OFF, a shock sound will be generated and, therefore, MUTE shall be applied.
VDD and VCC should be turned on simultaneously or VDD first, followed by VCC.
(BD3401KS2)
For all functions except Master Volume, Treble, Middle, Bass, Surround, and Bass Boost, MUTE must be applied
during setup.
(BD3402KS2)
For all the functions except Master Volume, Treble and Bass, MUTE must be applied during setup..
A built-in circuit for performing initialization inside the IC at power-ON is provided. In unstable systems it is
recommended that the data shall be sent to all the addresses during power-ON, until this operation cycle is
completed. Mute should be applied during this cycle.
Input Selector
PLAY BACK
Mixing Gain
Vocal Fader
Bass Boost
TONE ATT
Subwoofer
Input Gain
Surround
Function
Volume
Middle
Mixing
Treble
Bass
MUX
LINE
REC
AMS
MIC
ALC
Initial State
STEREO
TAPE A
MUTE
0ｄB
0ｄB
0ｄB
0ｄB
0ｄB
0ｄB
-5dB
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
3dB
14/16
BD3401KS2
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BD3402KS2
No selector
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