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PDF TEF6624 Data sheet ( Hoja de datos )
| Número de pieza | TEF6624 | |
| Descripción | Tuner | |
| Fabricantes | NXP Semiconductors | |
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 1. Datasheet - AM/FM Radio Tuner  Hay una vista previa y un enlace de descarga de TEF6624 (archivo pdf) en la parte inferior de esta página. Total 64 Páginas | ||
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TEF6624
Tuner with high integration and high efficiency for radio
Rev. 01.05 — 9 June 2009
Objective data sheet
1. General description
The TEF6624 is an AM/FM radio including Phase-Locked Loop (PLL) tuning system. The
system is designed in such a way, that it can be used as a world-wide tuner covering
common FM and AM bands for radio reception. All functions are controlled by the I2C-bus.
Besides the basic feature set it provides a good weak signal processing function and a
dynamic bandwidth control at FM reception.
It includes a newly developed demodulator for data reception of Radio Data System
(RDS) and Radio Broadcast Data System (RBDS) transmissions.
The TEF6624 has been qualified for aftermarket car radios with reduced temperature
range of Tamb = −20 °C to +85 °C and not according to automotive standards. This
product is not designed for automotive Original Equipment Manufacturer (OEM) business.
2. Features
I Backwards compatible with TEF6621; equal footprint, application and performance
I Fully integrated RDS/RBDS demodulator with improved performance
I RDS demodulator data output via I2C-bus; 32-bit buffer for reduced read out
I RDS data available signalled by I2C-bus bit (polling)
I FM tuner for Japan, Europe, US and OIRT reception
I AM tuner for Long Wave (LW) and Medium Wave (MW) reception
I Integrated AM Radio Frequency (RF) selectivity
I Integrated PLL tuning system; controlled via I2C-bus including automatic low/high side
Local Oscillator (LO) injection
I Fully integrated LO
I No alignment needed
I Very easy application on the main board
I No critical RF components
I Fully integrated Intermediate Frequency (IF) filters and FM stereo decoder
I Fully integrated FM noise blanker
I Field strength (LEVEL), multipath [Wideband AM (WAM)], noise [UltraSonic Noise
(USN)] and deviation dependent stereo blend
I Field strength (LEVEL), multipath (WAM), noise (USN) and deviation dependent
High-Cut Control (HCC)
I Field strength (LEVEL), multipath (WAM) and noise (USN) dependent soft mute
I Adjacent channel and deviation dependent IF bandwidth control [Precision Adjacent
Channel Suppression (PACS)]
I Single power supply
Free Datasheet http://www.datasheetlist.com/
1 page  
NXP Semiconductors
TEF6624
Tuner with high integration and high efficiency for radio
Table 3. Pin description …continued
Symbol
Pin Description
SDA
19 I2C-bus data input and output
VREF
20 reference voltage decoupling
VREGSUP
21
supply voltage internal voltage regulators
VCC1
GND
22 supply voltage 1
23 ground
VCODEC
24
decoupling for Voltage-Controlled Oscillator (VCO) supply voltage
PLL 25 PLL tuning voltage
PLLREF 26 PLL reference voltage
TEST
27 test pin, leave open in normal operation
AMSELIN1
28
AM selectivity input 1
AMSELIN2
29
AM selectivity input 2
AMIFAGC1
30
AM IF AGC 1
AMSELOUT1 31
AM selectivity output 1
AMSELOUT2 32
AM selectivity output 2
7. Functional description
7.1 RDS demodulator
The TEF6624 includes a newly developed full-digital RDS function. Very good RDS
sensitivity is achieved by optimized digital filtering and linear signal processing. The MPX
signal is converted from analog to digital and then filtered for selection of the 57 kHz RDS
signal and data shaping. Synchronous 57 kHz demodulation is realized by means of
Costas loop phase control followed by synchronization to the bit phase for sampling of the
RDS data.
The RDS demodulator data is provided by the I2C-bus for further data processing in a
microcontroller. For reduced data output rate a 32-bit buffer is included.
Availability of new group data is signalled by read bit RDAV (read data byte 0h or read
data byte 5h).
To avoid loss of RDS demodulator data the I2C-bus reading shall be done at least every
26 ms.
7.2 FM tuner
The RF input signal is mixed to a low IF with inherent image suppression. The IF signal is
filtered and demodulated. The complete signal path is fully integrated.
7.3 AM tuner
The RF signal is filtered and mixed to a low IF with inherent image suppression. The IF
signals are filtered and demodulated. The signal path is highly integrated.
TEF6624_1
Objective data sheet
Rev. 01.05 — 9 June 2009
© NXP B.V. 2009. All rights reserved.
5 of 64
Free Datasheet http://www.datasheetlist.com/
5 Page 
NXP Semiconductors
TEF6624
Tuner with high integration and high efficiency for radio
8.1.7 Read mode: data byte RDS_DAT3
Table 19.
7
DD31
RDS_DAT3 - data byte 6h bit allocation
6543
DD30
DD29
DD28
DD27
2
DD26
1
DD25
0
DD24
Table 20.
Bit
7 to 0
RDS_DAT3 - data byte 6h bit description
Symbol Description
DD[31:24] RDS demodulator data; first (oldest) byte of 32-bit buffered data stream
8.1.8 Read mode: data byte RDS_DAT2
Table 21.
7
DD23
RDS_DAT2 - data byte 7h bit allocation
6543
DD22
DD21
DD20
DD19
2
DD18
1
DD17
0
DD16
Table 22.
Bit
7 to 0
RDS_DAT2 - data byte 7h bit description
Symbol Description
DD[23:16] RDS demodulator data; second byte of 32-bit buffered data stream
8.1.9 Read mode: data byte RDS_DAT1
Table 23.
7
DD15
RDS_DAT1 - data byte 8h bit allocation
6543
DD14
DD13
DD12
DD11
2
DD10
1
DD9
0
DD8
Table 24.
Bit
7 to 0
RDS_DAT1 - data byte 8h bit description
Symbol Description
DD[15:8] RDS demodulator data; third byte of 32-bit buffered data stream
8.1.10 Read mode: data byte RDS_DAT0
Table 25.
7
DD7
RDS_DAT0 - data byte 9h bit allocation
6543
DD6
DD5
DD4
DD3
2
DD2
1
DD1
0
DD0
Table 26.
Bit
7 to 0
RDS_DAT0 - data byte 9h bit description
Symbol Description
DD[7:0]
RDS demodulator data; fourth (newest) byte of 32-bit buffered data
stream
TEF6624_1
Objective data sheet
Rev. 01.05 — 9 June 2009
© NXP B.V. 2009. All rights reserved.
11 of 64
Free Datasheet http://www.datasheetlist.com/
11 Page | ||
| Páginas | Total 64 Páginas | |
| PDF Descargar | [ Datasheet TEF6624.PDF ] | |
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