TDA8046 Datasheet, PDF (31/48 Pages) NXP Semiconductors – Multi-mode QAM demodulator

Philips Semiconductors
Multi-mode QAM demodulator
Product specification
TDA8046
Table 8 Default settings after reset
FUNCTION
ADD
D7
DAC current inversion/ 00
0
general
Demodulator
01
1
DAC/OFFS/switch
02
0
Digital test/output
formatter
03
−
Digital loop filter B.W.
04
0
Digital loop filter B.W.
05
1
Lock detector
threshold
06
0
Lock detector window 07
−
size
AGC detector
threshold
08
0
Equalizer mode
09
−
Equalizer tap FFEI
0A
0
Equalizer steps
0B
−
Table 9 READ (R/W = 1)
FUNCTION
V_CARREC (4 bits)
V_CLKREC (4 bits)
V_AGC (4 bits)
Alarm equalizer/
lock detector
SER estimation
FFEI3
....
FFEI0
DFEI1
....
DFEI7
DFEI8
FFEQ3
....
FFEQ0
DFEQ1
....
DFEQ8
FFEI5
FFEQ5
ADD
D7
00
−
01
−
02
−
03
−
04
LE7
05
b7
...
b7
08
b7
09
b7
...
b7
0F
b7
10
b7
11
b7
...
b7
14
b7
15
b7
...
b7
1C
b7
1D
b7
1E
b7
1996 Nov 19
D6
D5
D4
D3
D2
D1
D0
1
0
1
1
1
0
0
1
0
0
0
0
1
1
1
0
1
0
1
0
1
−
−
−
0
0
0
0
1
0
0
0
0
0
0
−
−
−
−
1
0
0
0
0
1
1
0
0
0
−
−
−
−
−
0
0
1
1
1
1
1
1
1
−
0
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
−
0
0
0
D6
D5
D4
D3
D2
D1
D0
−
−
−
CR03 CR02 CR01 CR00
−
−
−
CL03 CL02 CL01 CL00
−
−
−
AG03 AG02 AG01 AG00
−
−
ALEQ
−
−
−
LK
LE6
LE5
LE4
LE3
LE2
LE1
LE0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
b6
b5
b4
b3
b2
b1
b0
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