TC9444F Datasheet, PDF (14/28 Pages) Toshiba Semiconductor – Single-Chip karaoke IC II

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