參數(shù)資料
型號: TC9444F
廠商: Toshiba Corporation
英文描述: Single-Chip karaoke IC II
中文描述: 單芯片集成電路二卡拉OK
文件頁數(shù): 19/29頁
文件大?。?/td> 315K
代理商: TC9444F
TC9444F
2002-01-11
19
In addition Delay RAM is properly used by MAL [2:0] as RAM of
1
024, 2048, and 4096 word, as
shown in the following figure.
Table 3.21 Block Assignment and Address Range of Delay RAM
MAL2
MAL1
MAL0
Block
Address Range
0
0
0
A
3FFh to 000h
0
0
1
B
7FFh to 400h
0
1
0
C
BFFh to 800h
0
1
1
D
FFFh to C00h
1
0
0
E
7FFh to 000h
1
0
1
F
FFFh to C00h
1
1
G
FFFh to 000h
Table 3.22 Setting of Decimation Ratio
DECI2
DECI1
DECI0
Decimation Ratio
0
0
0
1/1
0
0
1
1/2
0
1
0
1/3
0
1
1
1/4
The same or overlapping block cannot be accessed by different decimation ratio.
Moreover, decimation ratio set up here and decimation ratio set up by DECI command need to be
fundamentally made in agreement.
DECI bit set up with an offset address determines decimation ratio of memory access, and a setup
to DECI command determines the band of a decimation filter.
Note 14: Since C block is assigned to Keycontrol R-ch, and D block is assingned to Keycontrol L-ch, it is neseccary
to be set to KEY 0H when using it here.
Figure 3.1 Block Division of Delay RAM
1024 word
FFFH
D
1024 word
C00H
C
1024 word
800H
B
1024 word
400H
A
F
E
G
000H
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