tc9444f TOSHIBA Semiconductor CORPORATION, tc9444f Datasheet - Page 13

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

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