TC9444F Datasheet, PDF (13/28 Pages) Toshiba Semiconductor – Single-Chip karaoke IC II

TC9444F
Table 3.4 EMPH Command
CH
3
CL
2
1
6
ESB2
ESB1
ESA2
Note 6: At a reset, the initial value is CL = 5H.
0
ESA1
Table 3.5 Settings with EMPH Command
CL
CH
ESB2
ESB1
ESA2
ESA1
Setting Block
Filter Characteristics
6
¾
¾
0
0
DSP block
Bank 0 (fs = 44.1 kHz)
*6
¾
¾
0
1
DSP block
Bank 1 (off)
6
¾
¾
1
0
DSP block
Bank 2 (fs = 48 kHz)
6
¾
¾
1
1
DSP block
Bank 3 (fs = 32 kHz)
6
0
0
¾
¾
Output DAC block
fs = 44.1 kHz
*6
0
1
¾
¾
Output DAC block
Off (through)
6
1
0
¾
¾
Output DAC block
fs = 48 kHz
6
1
1
¾
¾
Output DAC block
fs = 32 kHz
3.9 DECI Command
One-byte command to select the decimation filter for delay processing in delay RAM.
At a reset, the initial value is 1/3 decimation (CL = 2).
This command determines only the decimation filter band. The decimation rate in delay RAM is
determined by the OFRAM command value.
Table 3.6 DECI Command
CH
CL
Setting Content
7
0
1/1 decimation
7
1
1/2 decimation
*7
2
1/3 decimation
7
3
1/4 decimation
3.10 ATIME Command
One-byte command to set the compressor block attack time.
Table 3.7 ATIME Command
Attack Time [ms]
CH
CL
ATK1
ATK0
CB2, 1 = 0, 0
CB2, 1 = 0, 1
CB2, 1 = 1, 0
8
0
L
L
4
3
2
8
1
L
H
8
6
4
*8
2
H
L
16
12
8
8
3
H
H
32
24
16
CB2, 1 = 1, 1
1
2
4
8
13
2002-01-11