TEF6903AH/V2,557 NXP Semiconductors, TEF6903AH/V2,557 Datasheet - Page 43
TEF6903AH/V2,557
Manufacturer Part Number
TEF6903AH/V2,557
Description
IC INTEGRATED CAR RADIO 80-QFP
Manufacturer
NXP Semiconductors
Datasheet
1.TEF6903AHV5S518.pdf
(110 pages)
Specifications of TEF6903AH/V2,557
Modulation Or Protocol
AM, FM, WB
Applications
AM/FM Radio Receiver
Current - Receiving
102mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Voltage - Supply
8 V ~ 9 V
Operating Temperature
-40°C ~ 85°C
Package / Case
80-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Frequency
-
Sensitivity
-
Memory Size
-
Data Rate - Maximum
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
935281201557
TEF6903AH/V2
TEF6903AH/V2
TEF6903AH/V2
TEF6903AH/V2
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NXP Semiconductors
TEF6903A_3
Product data sheet
8.2.11 Write mode: data byte ACD
The bits IFCFA and IFNBW are intended for factory alignment use only. Normal radio
operation requires a setting of bits IFCFA and IFNBW to logic 0.
Table 48.
Table 49.
Bit
7
6 and 5
4 and 3
2 and 1
0
ACDLEV ACDLAP1 ACDLAP0 ACDBAL1 ACDBAL0 ACDWAM1 ACDWAM0
5. Change IFCF from 0 to 63 and note the level read result (level voltages)
6. Test low side of filter curve: tune to f
7. Change IFCF from 0 to 63 and note the level voltages
8. Find the IFCF value where both level curves cross (lowest difference) and save this
9. Set bits IFCFA and IFNBW to logic 0 to return to normal operation
(Japan/OIRT)
IFCF value
7
0
Symbol
ACDLEV
ACDLAP[1:0]
ACDBAL[1:0]
ACDWAM[1:0] WAM threshold; desensitize bandwidth control at detection of WAM
HCSFH
ACD - format of data byte 09h with default setting
ACD - data byte 09h bit description
6
1
Rev. 03 — 3 April 2008
Description
level threshold; start level of threshold extension and latch protection
latch protection limit; protect against narrow bandwidth locking at high
modulation, low RF signal condition
control balance; bandwidth control priority towards adjacent channel
(prevent breakthrough) or towards modulation (low distortion)
HCC minimum bandwidth; combined control with bit HCSF;
see
5
0
0 = start at LEV = 40 (V
1 = start at LEV = 48 (V
00 = no protection
01 = low protection
10 = standard protection
11 = high protection
00 = high adjacent channel priority
01 = medium adjacent channel priority, standard operation
10 = medium modulation priority
11 = high modulation priority
00 = no desensitization on WAM
01 = low sensitivity; 40 %
10 = medium sensitivity; 30 %
11 = high sensitivity; 20 %
0 = minimum bandwidth of high cut control is 2.2 kHz or 3.3 kHz
1 = minimum bandwidth of high cut control is 3.9 kHz or 5.6 kHz
Table
57,
4
0
Table 60
RF
+ 50 kHz (Europe/USA) or f
and
3
1
LEVEL
LEVEL
Figure 26
= 0.88 V), normal operation
= 1 V)
2
0
TEF6903A
Integrated car radio
RF
© NXP B.V. 2008. All rights reserved.
1
1
33.3 kHz
HCSFH
43 of 110
0
0
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