tc9455f TOSHIBA Semiconductor CORPORATION, tc9455f Datasheet - Page 6
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tc9455f
Manufacturer Part Number
tc9455f
Description
Digital Echo Ic For Karaoke
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TC9455F.pdf
(14 pages)
4. Electronic volume controllers
4.1
controllers. The built-in volume controller operates in 16 steps. Using an external variable resistor, volume
can be controlled by the DC level or from the MCU using serial data.
The TC9455F/N supports an I
The IC incorporates microphone input 1 (MIC1) and microphone input 2 (MIC2) volume and echo volume
Serial control timing
Figure 4 shows the serial control timing.
Table 1 lists bits used to set the volume.
M3, M2, M1, M0: Volume setting data
VOL1, 2, 3 setting
VOL1 setting
VOL2 setting
VOL3 setting
MODE
DA7
M3
M3
M3
M3
2
C bus interface; the TC9488F/N, a three-lead interface.
Figure 4 Serial control timing
Table 1 Volume setting bits
DA6
M2
M2
M2
M2
DA5
M1
M1
M1
M1
6
DA4
M0
M0
M0
M0
DA3
0
0
1
1
DA2
0
1
0
1
DA1
0
0
0
0
TC9455,88F/N
DA0
0
0
0
0
2002-02-05