saa7706h NXP Semiconductors, saa7706h Datasheet

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saa7706h

Manufacturer Part Number
saa7706h
Description
Car Radio Digital Signal Processor Dsp
Manufacturer
NXP Semiconductors
Datasheet

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Product specification
File under Integrated Circuits, IC01
DATA SHEET
SAA7706H
Car radio Digital Signal Processor
(DSP)
INTEGRATED CIRCUITS
2001 Mar 05

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saa7706h Summary of contents

Page 1

... DATA SHEET SAA7706H Car radio Digital Signal Processor (DSP) Product specification File under Integrated Circuits, IC01 INTEGRATED CIRCUITS 2001 Mar 05 ...

Page 2

... DSP reset Test mode connections (pins TSCAN, RTCB and SHTCB C-BUS FORMAT Addressing Slave address (pin A0) Write cycles Read cycles SAA7706H hardware registers SAA7706H DSPs registers 2 I C-bus memory map specification LIMITING VALUES THERMAL CHARACTERISTICS CHARACTERISTICS 2 RDS AND I S-BUS TIMING 2 ...

Page 3

... RDS update processing: pause detection, mute and signal-quality sensor-freeze General purpose tone generator (1) Dolby — Available only to licensees of Dolby Laboratories Licensing Corporation, San Francisco, CA94111, USA, from whom licensing and application information must be obtained. Dolby is a registered trade-mark of Dolby Laboratories Licensing Corporation. 3 Product specification SAA7706H ...

Page 4

... APPLICATIONS High-end car radio systems. 3 GENERAL DESCRIPTION The SAA7706H performs all the signal functions in front of the power amplifiers and behind the car radio tuner AM and FM outputs and the CD, tape and phone inputs. These functions are: Interference absorption Stereo decoding for FM and AM (stereo) ...

Page 5

... V (RMS dB; A-weighted code = 0; A-weighted PACKAGE DESCRIPTION plastic quad flat package; 80 leads (lead length 1.95 mm); body Product specification SAA7706H MIN. TYP. MAX. UNIT ...

Page 6

... Acrobat reader. white to force landscape pages to be ... VDACP 2 VDACN1 71 PHONE 73 MONO PHONE_GND CMRR INPUTS 4 NAV_GND 3 LEVEL- LEVEL ADC 72 CD_L 70 STEREO CD_R SAA7706H CMRR 77 CD_(L)_GND INPUTS 14 CD_R_GND 78 VREFAD STEREO ADC1 67 AM_L/NAV 66 STEREO AM_R/AM 7 ADC2 AUX_L 8 ANALOG AUX_R 69 SOURCE MONO TAPE_L ...

Page 7

... S-bus transmitter; e.g. audio co-processor 2 word select output for external I subwoofer 2 data 1 output for external I S-bus receiver or co-processor 2 data 2 output for external I S-bus receiver or co-processor 7 Product specification SAA7706H 2 C-bus configurable 2 C-bus configurable 2 C-bus configurable 2 C-bus configurable 2 C-bus bit 2 ...

Page 8

... AM audio frequency or input of common mode navigation signal; analog input pin right channel of analog TAPE input left channel of analog TAPE input right channel of analog CD input common mode PHONE signal, analog input pin left channel of analog CD input 8 Product specification SAA7706H 2 C-bus bit ...

Page 9

... CD or TAPE or in the event of separated ground reference pins used for CD_L or TAPE_L common mode reference voltage ADC1, ADC2, ADC3 and level-ADC FM RDS signal; analog input pin FM multiplex signal; analog input pin EXPLANATION 2 C-bus specification; TTL tolerant 9 Product specification SAA7706H ...

Page 10

... CD_R_GND 14 DSP2_INOUT2 15 FLV 16 DSP2_INOUT1 17 DSP2_INOUT3 18 DSP2_INOUT4 19 LOOPO 20 TP1 21 V DDD3V7 22 V SSD3V7 23 SPDIF2 24 2001 Mar 05 SAA7706H Fig.2 Pinning diagram. 10 Product specification SAA7706H 64 OSC_OUT 63 OSC_IN V SS(OSC SEL_FR 60 RDS_DATA 59 RDS_CLOCK SDA 58 57 SCL DDD3V4 55 V SSD3V4 54 V SSD3V3 53 V DDD3V3 52 ...

Page 11

... It is also possible to directly mix PHONE or NAV (controlled with MIXC) with the front FSDAC channels after volume control. The FM inputs (FM_MPX/FM_RDS) can be selected with external pin SEL_FR. The FM and RDS input sensitivity can be adjusted with VOLFM 2 and VOLRDS via I C-bus. 11 Product specification SAA7706H ...

Page 12

... MUX x00 0 x01 MUX 1 x10 MUX 011 111 MIXC 1 0 MUX VOLMIX(4:0) Fig.3 Analog front-end switch diagram. 12 Product specification SAA7706H CLKLEVEL LEVELO LEVEL-ADC CLKADC2 S3 0 RDS MONO (RDS) ADF3 MUX 1 ADC3 S1 0 LEFT1 MUX 1 STEREO ADF1_a 0 RIGHT1 ADC1 ...

Page 13

... CD_L MUX 11 100 k G1 CD_(L)_GND VREFAD 78 MIDREF 1 M CD_R_GND 14 100 k CD_R MUX 11 off-chip on-chip 13 Product specification SAA7706H MUX S1 OA1 OA3 AIC1/2(1:0) GNDC1/2 GNDRC1 MUX S1 OA2 OA4 MGT460 ...

Page 14

... Fig.6 FM gain path through stereo decoder to DSP1 (full-scale) AUDIO DIGITAL DSP2 FILTER 5 dB GAIN STEREO DECODER DSP1 3 dB GAIN 2 dB (full-scale) MGT461 R FM EALIZATION OF THE INPUT CONTROL AUDIO DIGITAL DSP2 FILTER 5 dB GAIN 0 dB (full-scale) STEREO DECODER DSP1 3 dB GAIN MGT462 Product specification SAA7706H ...

Page 15

... Product specification SAA7706H S UPPLY OF THE ANALOG INPUTS for the analog ground and V DDA1 The signal audio path for input signals CD, TAPE, AUX, PHONE, NAV and AM ...

Page 16

... Car radio Digital Signal Processor (DSP) 20 handbook, full pagewidth (dB 100 120 140 0 10 Fig.8 Detailed frequency response curve analog-to-digital audio path decimation based on a 44.1 kHz sample frequency. 2001 Mar Product specification SAA7706H MGT464 (kHz) ...

Page 17

... The level information is sub-sampled by the DSP1 to obtain a field strength and a multipath indication. These values are stored in the coefficient or data RAM. Via the 2 I C-bus they can be read and used in other microcontroller programs Product specification SAA7706H MGT465 (kHz) 80 ...

Page 18

... IAC and the FM stereo decoder. One of the two MPX filter outputs contains the multiplex signal with a frequency range kHz. The overall low-pass frequency response of the decimation filters is shown in Fig.10. 200 300 18 Product specification SAA7706H MGT466 400 500 f (kHz) ...

Page 19

... RDS path ensuring the best possible performance. Except from the above mentioned theoretical response also the non-flat frequency response of the ADC has to be compensated in the DSP1 program Product specification SAA7706H 38 kHz of the pilot. In this case MGT467 (kHz) ...

Page 20

... The VCO of the DCS block will kHz 2 Hz exact based in the event of no-pilot FM_MPX reception or in the event of only RDS reception. In the event of stereo 19 kHz 2 Hz. reception the phase error is zero for a pilot tone with a frequency of exactly 19 kHz. 20 Product specification SAA7706H MGT468 200 250 300 f (kHz) ...

Page 21

... Therefore a clock signal with a controlled frequency of a multiple of 19 kHz (9.728 MHz = 512 In the SAA7706H the patented method of non-equidistant digitally controlled sampling DCS clock has been implemented special dividing mechanism a frequency of 9.728 MHz from the PLL2 clock frequency of > ...

Page 22

... DD(OSC AGC R bias 63 64 OSC_IN OSC_OUT C2 C1 Fig.13 Block diagram oscillator circuit. 22 Product specification SAA7706H . S DAC UPPLY OF THE FILTER STREAM . This block is m clock to circuit DD(OSC) V SS(OSC) MGT469 and V . ...

Page 23

... WS of the digital serial input or the WS derived from the SPDIF1/SPDIF2 input. There is also a possibility to provide the chip with an external clock, in that case it must be a 256f 23 Product specification SAA7706H clock to circuit DD(OSC) V SS(OSC) MGT470 ...

Page 24

... I C-bus and how to use it” . This document can be ordered using the code 9398 393 40011. For the external control of the SAA7706H device a fast I implemented. This is a 400 kHz bus which is downward-compatible with the standard 100 kHz bus. There are two different types of control instructions: ...

Page 25

... For communication with external digital sources a digital serial bus is implemented serial 3-line bus, having one line for data, one line for clock and one line for the word select. For external digital sources the SAA7706H acts as a slave, so the external source is master and supplies the clock. ...

Page 26

Acrobat reader. white to force landscape pages to be ... WS LEFT BCK DATA MSB B2 MSB ...

Page 27

... The second filter reduces the RDS bandwidth around 57 kHz. The overall filter curve is shown in Fig.16 and a more detailed curve of the RDS 57 kHz band in Fig.17 Product specification SAA7706H C LOCK AND DATA RECOVERY 95 114 133 f (kHz) 2 C-bus bit. ...

Page 28

... C-bus bit. Under these 0.5 times to a maximum of 1.5 times the standard clock periods. Normally, faults in phase do not occur on a cyclic basis. 28 Product specification IMING OF CLOCK AND DATA SIGNALS SAA7706H MGT472 64 f (kHz) ...

Page 29

... HIGH. The data is written out just after the clock HIGH-to-LOW transition. The data is valid when the clock is HIGH. When a new 16-bit buffer is filled before the other buffer is read, that buffer will be overwritten and the old data is lost. 29 Product specification SAA7706H MGU270 ...

Page 30

... Pins TSCAN, RTCB and SHTCB are used to put the chip in test mode and to test the internal connections. Each pin has an internal pull-down resistor to ground. In the application these pins can be left open or connected to ground. 30 Product specification SAA7706H D13 D14 D15 Test mode connections (pins TSCAN, RTCB and SHTCB) MGU271 ...

Page 31

... DSPs and some major settings such as the PLL division. These locations have a maximum of 16 bits, which means 2 bytes need to be sent to or read from. For the SAA7706H one register is located at the DSPs and general control register (0FFFH). The second block has an address space of 16 addresses and are all X-memory mapped on DSP2 ...

Page 32

... ACK = acknowledge from SAA7706H (SDA LOW repeat n-times the bytes data group NA = negative acknowledge master (SDA HIGH) ADDR H and ADDR L = address DSP register DATA 1, DATA 2, DATA 3 and DATA bytes data word. Fig.21 Master transmitter reads from the SAA7706H registers ...

Page 33

... XRAM of DSP2. Table 5 shows the detailed memory map of those locations. All locations are acknowledged by the SAA7706H even if the user tries to write to a reserved space. The data in these sections will be lost. Reading from this locations will result in undefined data words. ...

Page 34

... MIN. 0.5 0.5 > 0 > 0 < 0 2000 200 100 CONDITIONS MIN. TYP. 3.0 3.3 110 105 Product specification SAA7706H MAX. UNIT +3 +85 C +125 890 mW VALUE UNIT 45 K/W MAX. UNIT 3.6 V 150 mA ...

Page 35

... V DD standard output slew rate output slew rate output slew rate output C-bus output 400 Product specification SAA7706H MIN. TYP. MAX. 540 750 2.0 0.8 0 0.4 DD 0.4 0.4 0.4 ...

Page 36

... Mar 05 CONDITIONS = 3.3 V DDA1 with reference to V SSA1 THD <1% THD <1%; VOLFM = 00H input signal 0.55 V (RMS kHz; bandwidth = 20 kHz 44.1 kHz s input signal 368 mV (RMS kHz; bandwidth = 19 kHz; VOLFM = 00H 36 Product specification SAA7706H MIN. TYP. MAX. 0.47 0.50 0. 3.3 3.6 200 0.3 0 +0.3 200 140 0.6 ...

Page 37

... MIN. TYP kHz kHz 76 110 110 110 110 35.5 35 Product specification SAA7706H MAX. UNIT ...

Page 38

... VOLMIX = 30H; measured at FLV and FRV outputs V = 0.75 V(RMS kHz VOLMIX = 30H kHz; VOLMIX = 30H 3.3 V amb DDA1 THD < 1%; VOLRDS = 00H kHz c 38 Product specification SAA7706H MIN. TYP. MAX 0 120 150 0. ...

Page 39

... DCS clock = 9.728 MHz DCS clock = 9.728 MHz = amb DDA2 pin VREFDA pins FLV, FRV, RLV and RRV (THD + N)/S < 0.1 Product specification SAA7706H MIN. TYP. MAX. UNIT 0 0.5 3 ...

Page 40

... (see Fig.13) at start-up at oscillation CONDITIONS direct output mode direct output mode buffer mode direct output mode buffer mode direct output mode buffer mode buffer mode 40 Product specification SAA7706H MIN. TYP. MAX. 200 1000 0 105 11.2896 1.6 2.6 3.6 1 ...

Page 41

... T = 325 325 325 325 ns cy RIGHT h(WS) t d(D) t BCK(L) LSB LSB Fig.23 Input timing digital audio data inputs. 41 Product specification SAA7706H MIN. TYP. 0.15T 0.15T 325 0.35T cy 0.35T cy 0.2T cy 0.2T cy 0.15T 0.2T cy 0.2T cy LEFT t su(WS) t su(D) t h(D) MSB MSB MAX ...

Page 42

... SP be suppressed by input filter 2001 Mar 05 STANDARD MODE 2 I C-BUS CONDITIONS MIN. 0 100 4.7 4.0 4.7 4.0 4.7 0 250 1000 300 b 4.0 400 42 Product specification SAA7706H 2 FAST MODE I C-BUS MAX. MIN. MAX. 0 400 1.3 0.6 1.3 0.6 0.6 0 0.9 100 20 + 0.1C 300 0.1C 300 b 0.6 400 0 50 UNIT kHz ...

Page 43

... HD;STA t HD;DAT S 15 SOFTWARE DESCRIPTION The use and description of the software features of the SAA7706H will be described in the separate application manual. 16 APPLICATION DIAGRAM The application diagram shown in Figs 25 and 26 must be considered as one of the examples of a (limited) application 2 of the chip e.g. in this case the I S-bus inputs of the CD-input are not used ...

Page 44

... LEVEL ADC SAA7706H STEREO ADC1 STEREO ADC2 MONO ADC3 RDS XTAL DEMODULATOR OSCILLATOR C23 X1 100 nF RDS RDS L1 11.2896 C24 DATA CLOCK 18 pF MHz C48 R36 DDA SAA7706H C25 18 pF MGT473 ...

Page 45

... C38 R31 9 RLV 100 10 F C39 R30 C40 R33 6 RRV 100 10 F C41 R32 VREFDA C42 4 IIS_OUT1 35 IIS_OUT2 30 IIS_CLK 33 IIS_WS 31 IIS_IN1 32 IIS_IN2 20 LOOPO 42 C30 1 F MGT474 SAA7706H R24 910 R25 4.7 k microcontroller FRONT-LEFT FRONT-RIGHT REAR-LEFT REAR-RIGHT microcontroller ...

Page 46

... 0.45 0.25 20.1 14.1 24.2 0.8 0.30 0.14 19.9 13.9 23.6 REFERENCES JEDEC EIAJ MO-112 18.2 1.0 1.95 0.2 0.2 0.1 17.6 0.6 EUROPEAN PROJECTION Product specification SAA7706H SOT318 detail X (1) ( 1.0 1 0.6 0.8 0 ISSUE DATE 97-08-01 99-12-27 ...

Page 47

... Use a low voltage ( less) soldering iron applied to the flat part of the lead. Contact time must be limited to 10 seconds 300 C. When using a dedicated tool, all other leads can be soldered in one operation within seconds between 270 and 320 C. 47 Product specification SAA7706H ...

Page 48

... Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65 mm definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm. 2001 Mar 05 SOLDERING METHOD WAVE not suitable (2) not suitable suitable (3)(4) not recommended (5) not recommended 48 Product specification SAA7706H (1) REFLOW suitable suitable suitable suitable suitable ...

Page 49

... C COMPONENTS 2 C components conveys a license under the Philips’ system provided the system conforms to the I 49 Product specification SAA7706H (1) DEFINITIONS These products are not Philips Semiconductors 2 C patent to use the 2 C specification defined by ...

Page 50

... Philips Semiconductors Car radio Digital Signal Processor (DSP) 2001 Mar 05 NOTES 50 Product specification SAA7706H ...

Page 51

... Philips Semiconductors Car radio Digital Signal Processor (DSP) 2001 Mar 05 NOTES 51 Product specification SAA7706H ...

Page 52

Philips Semiconductors – a worldwide company Argentina: see South America Australia: 3 Figtree Drive, HOMEBUSH, NSW 2140, Tel. +61 2 9704 8141, Fax. +61 2 9704 8139 Austria: Computerstr. 6, A-1101 WIEN, P.O. Box 213, Tel. + 101 ...

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