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): 26/48頁
文件大小: 245K
代理商: TDA8046H
1996 Nov 19
26
Philips Semiconductors
Product specification
Multi-mode QAM demodulator
TDA8046
Fig.26 Demapping scheme 3; bit allocation: 32-QAM.
Bit allocation for 32-QAM: b5, b4 and b3; b2 = b1 = b0 = 0; b7 and b6 differentially decoded (see Table 3).
handbook, full pagewidth
MGG189
0 0 0
1 0 0
1 1 0
0 0 1
1 0 1
0 1 0
0 1 1
1 1 1
0 1 1
0 0 1
0 0 0
1 1 1
1 0 1
1 0 0
0 1 0
1 1 0
I
Q
A quadrant
b5 b4 b3
B quadrant
D quadrant
C quadrant
1 1 0
0 1 0
1 0 0
1 0 1
1 1 1
0 0 0
0 0 1
0 1 1
1 1 1
0 1 1
0 1 0
1 0 1
0 0 1
1 1 0
1 0 0
0 0 0
7.1.10.4
Demapping scheme 4; direct translation: HP8782B/K03
Fig.27 Demapping scheme 4; bit allocation: 256-QAM.
Bit allocation for 256-QAM: b7, b6, b5, b4, b3, b2, b1, b0.
handbook, full pagewidth
MGG196
I
Q
b2
b3
b1 b0
b4
b5
b6
b7
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
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