YAC520 Datasheet, PDF (8/16 Pages) YAMAHA CORPORATION – High Grade Volume Control

YAC520
• Volume Setting
In zero crossing mode (ZCEN=H), the volume value is changed when one zero crossing is detected after
the rise of CSN. The volume value is changed also when no zero crossing is detected for 20 ms. In normal
mode (ZCEN=L), zero crossing detection is not performed and volume value is changed immediately
after the rise of CSN.
The input codes and volumes values are related as described in the following table.
Input Code
(Left/Right Channel)
11111111
11111110
•
•
11010111
•
11000100
•
10111111
•
•
00000010
00000001
00000000
L(R)IN1=L(R)IN2
L(R)IN2=GND
L(R)IN1=GND
Gain or Attenuation (dB) Gain or Attenuation (dB) Gain or Attenuation (dB)
+32.0
+31.5
•
•
+12.0
•
+2.5
•
0
•
•
−94.5
−95.0
MUTE
+29.5
+29.0
•
•
+9.5
•
0
•
−2.5
•
•
−97.0
−97.5
MUTE
+20.0
+19.5
•
•
0
•
−9.5
•
−12.0
•
•
−106.5
−107.0
MUTE
• MUTE
Writing 0000h into register enables mute. The time mute is enabled varies between zero crossing mode
(ZCEN=H) and normal mode (ZCEN=L) as described above.
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