TC9488F TOSHIBA [Toshiba Semiconductor], TC9488F Datasheet - Page 7
TC9488F
Manufacturer Part Number
TC9488F
Description
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
Manufacturer
TOSHIBA [Toshiba Semiconductor]
Datasheet
1.TC9488F.pdf
(14 pages)
4.2
Setting of microphone and echo volumes
Table 2 lists the microphone setting values and attenuation; Table 3 lists the echo volume setting
values and attenuation. The DC level settings are typical values.
Table 2 Microphone volume (VOL1, VOL2) attenuation
DC Level Setting (V)
DC Level Setting (V)
Table 3 Echo volume (VOL3) attenuation
5.0
4.4
4.2
3.9
3.7
3.5
3.2
3.0
2.7
2.5
2.3
2.0
1.8
1.5
1.3
1.1
0.0
5.0
4.4
4.2
3.9
3.7
3.5
3.2
3.0
2.7
2.5
2.3
2.0
1.8
1.5
1.3
1.1
0.0
M3
M3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Serial Data Setting
Serial Data Setting
M2
M2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
7
M1
M1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
M0
M0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Attenuation (dB)
Attenuation (dB)
−10
−12
−14
−16
−18
−20
−22
−24
−26
−28
−10
−11
−12
−13
−14
−∞
−∞
−2
−4
−6
−8
−1
−2
−3
−4
−5
−6
−7
−8
−9
0
0
TC9455,88F/N
2002-02-05