TC9488F TOSHIBA [Toshiba Semiconductor], TC9488F Datasheet - Page 7

• Manufacturer Part Number: TC9488F
• Description: TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
• Manufacturer: TOSHIBA [Toshiba Semiconductor]

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