tda9898 NXP Semiconductors, tda9898 Datasheet - Page 36

• Manufacturer Part Number: tda9898
• Description: Multistandard Hybrid If Processing Semiconductors
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA9897_TDA9898_3
Product data sheet
Table 47.
[1]
Table 48.
Table 49.
Table 50.
[1]
Bit
TOPNEG4
W9[4]
1
:
1
:
0
Bit
7 and 6
5
4 to 0
Bit
TOPPOS4
W10[4]
1
:
1
:
0
See
See
7
0
Table 53
Table 53
Symbol
-
XPOTPOS
TOPPOS[4:0] TOP adjustment for TAGC derived from IF AGC; see
Tuner takeover point adjustment bits W9[4:0]
W10 - data write register bit allocation
W10 - data write register bit description
Tuner takeover point adjustment bits W10[4:0]
TOPNEG3
W9[3]
1
:
0
:
0
TOPPOS3
W10[3]
1
:
0
:
0
6
0
for parameter tuner takeover point accuracy (
for parameter tuner takeover point accuracy (
XPOTPOS TOPPOS4 TOPPOS3 TOPPOS2 TOPPOS1 TOPPOS0
Rev. 03 — 11 January 2008
Description
0 = fixed value
TOP derived from IF AGC via I
5
TOPNEG2
W9[2]
1
:
0
:
0
TOPPOS2
W10[2]
1
:
0
:
0
1 = TOP adjustment by external potentiometer at pin TOP2
0 = see
Table 50
4
TOPNEG1
W9[1]
1
:
0
:
0
TOPPOS1
W10[1]
1
:
0
:
0
TDA9897; TDA9898
3
Multistandard hybrid IF processing
TOPNEG0
W9[0]
TOPPOS0
W10[0]
1
:
0
:
0
2
1
:
0
:
0
acc(set)TOP
acc(set)TOP2
C-bus or potentiometer
).
2
).
TOP adjustment (dB V)
98.2 typical
see
78.7
see
57.9 typical
TOP adjustment (dB V)
99 typical
see
81
see
61 typical
[1]
Figure 13
Figure 13
Figure 13
Figure 13
[1]
© NXP B.V. 2008. All rights reserved.
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Table 50
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