參數(shù)資料
型號： TDA8046H
廠商： NXP SEMICONDUCTORS
元件分類： 消費(fèi)家電
英文描述： Multi-mode QAM demodulator
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP64
文件頁數(shù)： 21/48頁
文件大小： 245K
代理商： TDA8046H
1996 Nov 19
21
Philips Semiconductors
Product specification
Multi-mode QAM demodulator
TDA8046
Bit allocation for 4-QAM: b5 = b4 = b3 = b2 = b1 = b0 = 0; b7 and b6 differentially decoded (see Table 3).
Bit allocation for 64-QAM: b5, b4, b3 and b2; b0 = b1 = 0; b7 and b6 differentially decoded (see Table 3).
Fig.18 Demapping scheme 1; bit allocation: 4-QAM and 64-QAM.
handbook, full pagewidth
MGG183
0 0 0 0
0 0 0 1
0 0 1 1
0 0 1 0
0 1 0 0
0 1 0 1
0 1 1 1
0 1 1 0
1 1 0 0
1 1 0 1
1 1 1 1
1 1 1 0
1 0 0 0
1 0 0 1
1 0 1 1
1 0 1 0
1 0 0 0
1 1 0 0
0 1 0 0
0 0 0 0
1 0 0 1
1 1 0 1
0 1 0 1
0 0 0 1
1 0 1 1
1 1 1 1
0 1 1 1
0 0 1 1
1 0 1 0
1 1 1 0
0 1 1 0
0 0 1 0
I
Q
A quadrant
b5 b4 b3 b2
B quadrant
D quadrant
C quadrant
0 0 1 0
0 1 1 0
1 1 1 0
1 0 1 0
0 0 1 1
0 1 1 1
1 1 1 1
1 0 1 1
0 0 0 1
0 1 0 1
1 1 0 1
1 0 0 1
0 0 0 0
0 1 0 0
1 1 0 0
1 0 0 0
1 0 1 0
1 0 1 1
1 0 0 1
1 0 0 0
1 1 1 0
1 1 1 1
1 1 0 1
1 1 0 0
0 1 1 0
0 1 1 1
0 1 0 1
0 1 0 0
0 0 1 0
0 0 1 1
0 0 0 1
0 0 0 0
Fig.19 Demapping scheme 1; bit allocation: 16-QAM and 32-QAM.
Bit allocation for 16-QAM: b5 and b4; b3 = b2 = b1 = b0 = 0; b7 and b6 differentially decoded (see Table 3).
Bit allocation for 32-QAM: not implemented.
handbook, full pagewidth
MGG184
0 0
0 1
1 0
1 1
1 0
0 0
1 1
0 1
I
Q
A quadrant
b5 b4
B quadrant
D quadrant
C quadrant
0 1
1 1
0 0
1 0
1 1
1 0
0 1
0 0
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參數(shù)描述
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