AK4707 Datasheet, PDF (20/42 Pages) Asahi Kasei Microsystems – AV SCART Switch

ASAHI KASEI
[AK4707]
1Vrms
AINL/R+
0.47µ
AINL/R-
0.47µ
Volume Gain 0dB
Volume #0
1Vrms
TVOUTL/R
(VCROUTL/R)
Figure 5. Volume #0(Volume Gain=0dB:default), Single-ended Input
(02H: D5-D3)
VOL2 VOL1
1
1
1
1
1
0
1
0
0
1
0
1
0
0
0
0
VOL0
1
0
1
0
1
0
1
0
Volume #0 Gain
+12dB
+9dB
+6dB
+3dB
0dB
-3dB
-6dB
Mute
Output Level (Typ)
2Vrms (with 0.5Vrms input)
-
2Vrms (with 1Vrms input)
-
1Vrms (with 1Vrms input: default)
-
0.5Vrms (with 1Vrms input)
-
„ MUTE Control
Table 6. Volume #0, Single-ended Input
To minimize the click noise at setting the MUTE bit = “1”, the AK4707 has a zero-cross detection. When the ZERO bit =
“1”, the zero-cross detection function is enabled. TVOUTL/R outputs analog common voltage at the input signal first
zero-cross point from setting the MUTE bit = “1” or when the zero-cross is not detected within the time set by ZTM1-0
bits (12.8msec to 102.4msec). TVOUTL/R outputs of TV1-0 switch at the input signal first zero-cross point from setting
the MUTE bit = “0” or when the zero-cross is not detected within the time set by ZTM1-0 bits. The zero-cross is detected
on L/R channels at the TV1/0 selector independently. To disable this function, set the ZERO bit to “0”.
ZERO: Zero-cross detection enable for TV1/0 selector
0: Disable
1: Enable (default)
MS0551-E-00
- 20 -
2006/10