tc9444f TOSHIBA Semiconductor CORPORATION, tc9444f Datasheet - Page 14

• Manufacturer Part Number: tc9444f
• Description: Single-chip Karaoke Ic Ii
• Manufacturer: TOSHIBA Semiconductor CORPORATION

CH
*9
3.11 RTIME Command
9
9
9
9
9
9
3.12 COMP Command
CL
One-byte command to set the compressor block release time.
One-byte command to select the compressor function.
Noise can result when CB2,  are used to switch the compression ratio.
To switch the ratio without clunking, refer to the software datasheet.
0
1
2
3
4
5
6
REL1
Note 7: At a reset, the initial value is CL = 8H.
H
H
H
H
L
L
L
CH
A
Table 3.10 Compression Ratio Settings
CBS
0
0
0
0
1
1
1
1
REL1
VCHG: VCHG = “H” selects (turns on) the vocal change function.
CBS: Selects the compression ratio. CBS = “L” selects a ratio of 24dB;
CB2, 1: Used for precise selection of the compression ratio.
H
H
L
L
L
L
L
Table 3.8 RTIME Command [s]
Table 3.9 COMP Command
CBS = “H” selects 36dB (refer to the table)
VCHG
REL0
3
H
H
H
L
L
L
L
CB2
0
0
1
1
0
0
1
1
CB2, 1 = 0, 0
16.9
33.3
CBS
1.1
1.6
2.6
4.6
8.7
14
2
CL
CB1
0
1
0
1
0
1
0
1
CB2, 1 = 0, 1
CB2
1
16.3
32.6
0.5
1.0
2.0
4.1
8.2
Release Time
Compression
Ratio
24dB
18dB
12dB
36dB
27dB
18dB
6dB
9dB
CB1
0
CB2, 1 = 1, 0
10.4
20.8
0.3
0.7
1.3
2.6
5.2
2002-01-11
CB2, 1 = 1, 1
TC9444F
0.1
0.3
0.6
1.1
2.2
4.5
9.0