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AK4141 Datasheet, PDF (89/96 Pages) Asahi Kasei Microsystems – NICAM/A2/EIA-J Digital Stereo Decoder | |||
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CONFIDENTIAL
[AK4141]
Addr
8FH
Register Name
NICAM Noise ASD Threshold
R/W
Default
D7 D6 D5 D4 D3 D2 D1 D0
ANNT[7:0]
R/W
1111 1111
ANNT[7:0]
ASDç¨NICAMãã¤ãºã¹ã¬ã·ã§ã«ãã8-bitã¹ã¬ã·ã§ã«ãã¯NICAMãã¤ãºã®ä¸ä½8bit (NICN[15:8])ã¨æ¯è¼ã
ãã¾ããANNTã®å¤ã¯ä»¥ä¸ã®æ°å¼ã§å®ç¾©ããã¾ãã
ANNTh = Average Symbol Phase Error Magnitude (degrees) * 32 / 22.5 (degrees)
Average Symbol Phase Error
ANNT
Magnitude (degrees)
(decimal)
0
0
(default)
7.0
10
21.1
30
(Recommended)
22.5
32
:
:
179
255
Table 107.Typical NICAM Noise ASD Threshold Values
Addr
Register Name
D7
D6
D5
D4
D3
D2
D1
D0
90H NICAM Noise msb
NICN[15:8]
91H
NICAM Noise lsb
NICN[7:0]
R/W
RD
RD
RD
RD
RD
RD
RD
RD
Default
0
0
0
0
0
0
0
0
ASQT[7:0]
NICAM å¹³åã·ã³ãã«ä½ç¸ã¨ã©ã¼å¼·åº¦ããã®å¤ã¯åNICAM DQPSKã·ã³ãã«ã®ä½ç¸ã¨ã©ã¼å¹³å強度ã表ã
ã¾ãã
Average Symbol Phase Error Magnitude = NICNs * 22.5 / 8192 (degrees)
MS0952-J-03
- 89 -
2013/12
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