MOSA
An example of the volume control. (Volume = Ax + Bx + Cx)
Set two channels at 0dB. (Ax + Bx + Cx = 0dB + 0dB + 0dB)
MS6258
Gain And Attenuation Volume Controller IC
next, the volume changes from 0dB to -9dB. (Ax + Bx + Cx = -9dB + 0dB + 0dB)
next, the volume changes from -9dB to -19dB. (Ax + Bx + Cx = -9dB + -10dB + 0dB)
next, the volume changes from -19dB to -20dB. (Ax + Bx + Cx = 0dB + -20dB + 0dB)
Start MS6258 Address ACK 1 1 1 0 0 0 1 0 ACK 1 1 0 1 0 0 0 0 ACK Stop
2-ch, -10dB/step, -20dB
2-ch, -1dB/step, 0dB
next, the volume changes from -20dB to -14dB. (Ax + Bx + Cx = 0dB + -20dB + 6dB)
next, the volume changes from -14dB to +6dB. (Ax + Bx + Cx = 0dB + 0dB + 6dB)
Note: We suggest the gain is set as the power is up. For example, set and fix the gain +10dB, the volume range will be
controlled from +10dB to –69dB.
REV 6
11
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