3X8168

FRONTEND 4049 FM5 3x8168; 3x8292 TARGET SPECIFICATION ELECTRICAL DATA 1. Description: The frontend 4049 FM5 is specially designed for multimedia applications. It includes TV as well as FM reception possibility. TV reception standard are B/G; I, D/K, L, L`. The frontend includes a hyperband tuner which covers the frequency range from 45 to 865 MHz and an IF-part with SAWfilter, IF-amplifier, video- and sound demodulator. So the AF signal is available at the audio output nd terminal, the CVBS signal is available at the video output terminal. Also a 2 IF output is provided, which allows external sound demodulation for stereo and NICAM reception. A video buffer is built in which makes a direct connection to 75 Ω inputs possible. The reception frequency range is divided in VHF low, VHF high and UHF. VHFlow part of the tuner is used for FM reception also. Complete FM signal processing including demodulation and stereo decoding is built in. Baseband signals L (left) and R (right) as well as MPX (Baseband Multiplex signal) are on pins available. Band, standard selection and tuning are done via I²C-bus, completely. Also a digital AFC-function can be realized, because the AFC-voltage generated by the IF-demodulator is fed to an analogue/digital converter which is integrated in the IF demodulator-IC and readable via I²C-bus. A DC/DC converter is built in. Therefore supply voltage is 5V only. 2. Mechanical Characteristics: 2.1. Dimensions: according drawing 3x8168GZ 2.2. Weight: appr. 52 g I²C bus signal SCL I²C bus signal SDA Address selection for I²C bus FM sound output R FM sound output L 2nd IF Video output CVBS Supply voltage VS1 AF sound output / FM MPX 3X8168 ED November 02 Page: 1/14 8168ED01.DOC 2.3. Types Tunertype Sockettype 3x8168 IEC connectors 3x8292 Phono sockets Socketlength Height 14.4 mm 28.55/10.25 mm 10.3 mm 28.55/10.25 mm 3. Working Data: 3.1. Reception Standard: 3. 2. Frequency Range: VHF low VHF high UHF FM Margin: VHF low VHF high UHF FM ch IA ... ch S7... ch 21 ... S6 S41 69 +0.5 MHz/-0.25 MHz +1 MHz/-6 MHz +3 MHz/-6 MHz +/- 0.5 MHz ch IA ...S6 ch S7 ...S41 ch 21 ...69 45.75 MHz 147.25 MHz 471.25 MHz 87.50 MHz ... 140.25 MHz ... 463.25 MHz ... 855.25 MHz … 108.10 MHz B/G, I, D/K, L, L` Recommened take over frequencies: VHF low / VHF high VHF high/ UHF Frequency referred to picture carrier. 141 MHz 464 MHz IF: picture carrier sound carrier 1 sound carrier 2 NICAM sound carrier B, G 38.9 33.4 33.16 33.05 I 38.9 32.9 32.348 L 38.9 32.4 33.05 all frequencies in MHz Oscillator operates above received frequency. L` 33.90 40.40 D/K 38.9 32.4 33.05 3X8168 ED November 02 Page: 2/14 8168ED01.DOC 3.3. Supply voltage: Supply voltage VS1 3.4. Input impedance: VHF/UHF and FM 3.5. Temperature: Operating temperature: Storage temperature: ( measured in slowly moved air ) 0 ... 60 °C -25 ... 60 °C 75 Ω, unbalanced 5 V +/- 5% max. 230 mA 4. Test conditions: If not otherwise noticed all data are hold under following conditions: Measurement tolerance: Ambient temperature: Supply voltage: 10 % or 1 dB 25 °C +/- 3° V S1 +/- 5% 5. TV Tuner Data: 5.1. VSWR: VHF low VHF high UHF Referred to channel center frequency. min. typ. max. 5.0 5.0 5.0 unit 5.2. AGC-Range: VHF low VHF high UHF FM 5.3. IF-Rejection: VHF low VHF high UHF FM 5.4. Image-Rejection: VHF low VHF high VHF high UHF FM ch S7 .... ch S20 ch S21 .... ch S41 60 60 55 50 50 dB dB dB dB dB 50 60 60 50 dB dB dB dB 40 40 35 40 dB dB dB dB 3X8168 ED November 02 Page: 3/14 8168ED01.DOC 6. TV Output parameter: 6.1. Video output: Conditions: Standard B/G; Ant. input level 66 dBµV min. typ. 1 0.9 75 max. unit Vpp Vpp Ω CVBS - Output level (B/G, D/K, L/L`): (Standard I): Load impedance Video S/N (unweighted): Flat Field VHF UHF Video sensitivity (Off Air Channels) Video S/N = 30 dB 46 47 45 dB dB dBµV Frequency response: (sin x)/x Ref.: 0.2 MHz 1 MHz 2 MHz 3 MHz 4 MHz 4.43 MHz 5 MHz sound carrier rejection B/G I, D/K, L/L´ Differential gain modulated 5 step staircase -1.5 -2 -4 -4 -5 -12 30 26 3 5 2 3 3 4 3 dB dB dB dB dB dB dB dB %pp °pp Differential phase modulated 5 step staircase 3X8168 ED November 02 Page: 4/14 8168ED01.DOC 6.2 TV Sound output: Pin 21 Load Output level: 6.2.1 TV FM sound Conditions: Ant.input level 66 dBµV; Video signal: color bar Audio signal 1kHz, 27 kHz deviation; 50 µs preemphasis Measurements with 50 µs deemphasis: min. DC AC DC 100 10 typ. max. unit kΩ kΩ V 2.3 AF - level: THD: S/N: Frequency response: 40 Hz ... 15 kHz (6 kHz deviation) 400 -1 540 50 680 0.5 1 mVrms % dB dB 6.2.2 TV AM sound input level 66 dBµV, video signal: color bar audio signal 1kHz AM 54% modulation AF - level: THD: S/N: 400 500 45 600 1.0 mVrms % dB 6.3. 2nd IF output (PC/ sound carrier SC1: 7, 10, 13 dB) (sound carrier SC2 off ) AC level of SC1 5.5, 6.0, 6.5 MHz: 400 mVpp AC level of SC1 6.5 MHz: 400 (PC/ sound carrier: 10 dB) (L standard, without modulation) mVpp (PC/ sound carrier SC1: 10 dB) (PC/ sound carrier SC2: 20dB) AC level of SC2 5.74, 6.55 MHz: 125 mVpp Load impedance 0.5 kΩ 3X8168 ED November 02 Page: 5/14 8168ED01.DOC 7. FM part 7.1 FM output min. 7.1.1 Frequency range 7.1.2 Output levels AF = 1 kHz, 75 kHz deviation typ. max. 108.1 unit MHz 87.5 MPX Load impedance L, R resp. Load impedance 7.1.3 Frequency response 40 Hz to 15 kHz 7.1.4 Usable sensivity 30 dB S/N 50 dB S/N 1 kHz 75 kHz deviation AC DC AC DC 810 2.3 100 255 1.0 100 -2 5 15 65 2 mVrms V kΩ mVrms V kΩ dB dBµV dBµV dB 7.1.5 S/N at high input level Vin = 60 dBµV, Mod. = 1kHz 75 kHz deviation measured at MPX output with 50 µs deemphasis 7.1.6 Distortion at high input level 22.5 kHz deviation 0.2 30 60 53 50 80 % dB dB dB dB 7.1.7 Stereo channel separation 7.1.8 AM suppression Vin 60 dBµV 75 kHz dev. AM 30% 7.1.9 Image rejection unwanted signal 66.6 MHz above wanted signal 7.1.10 IF rejection referred to 33.3 MHz unwanted signal 3X8168 ED November 02 Page: 6/14 8168ED01.DOC 8. I²C bus There are two different I²C bus used one I²C Tuner to control tuning and one I²C IF to control IF 2 demodulation and baseband processing. With port P0 of control byte 2 the slave address of I C IF can be controlled. 8.1 I²C Tuner 8.1.1 Write data format Address byte Divider byte 1 Divider byte 2 Control byte 1 Control byte 2 MSB 1 0 n7 1 P7 1 n14 n6 CP P6 0 n13 n5 T2 P5 0 n12 n4 T1 P4 0 n11 n3 T0 P3 MA1 n10 n2 RSA P2 MA0 n9 n1 RSB P1 LSB R/W n8 n0 OS P0 A A A A A A = Acknowledge R/W = 0 : Write mode CP = 1 : charge pump current high T2, T1, T0 = test bits, normal operation: T2 = 0, T1 = 0, T0 = 1 RSA, RSB bits for minimum step size, see 8.1.2 OS = tuning voltage switch, normal operation: OS = 0 8.1.2 Address selection MA1 0 0 1 1 MA0 0 1 0 1 Address C0 C2 C4 C6 Voltage at Pin 11 ( 0 to 0.1 ) * VS1 (0.2 to 0.3) * VS1 or open ( 0.4 to 0.6 ) * VS1 ( 0.9 to 1 ) * VS1 8.1.3 Oscillator frequency and divider byte calculation: RSA RSB Reference divider Min. tuning step [kHz] 1 1 512 62.5 X 0 640 50.0 0 1 1024 31.25 for FM recption we recommend 50 kHz minimum step size fOSC= fD + fIF fIF = 38.9 MHz at B/G, D/K, I, L fIF = 33.9 MHz at L’ fIF = 33.3 MHz at FM fOSC fD : Local oscillator frequency : Desired frequency fref [kHz] 7.8125 6.25 3.90625 fOSC = fREF * 8 * SF fREF : Crystal reference frequency / 640 = 4 MHz / 640 = 6.25 kHz, ( RSA =X, RSB = 0) SF : Programmable scaling factor Scaling factor SF= 16384* n14 + 8192 * n13 * 4096 * n12 + 2048 * n11 + 1024 * n10 + 512 * n9 + 256* n8 + 128 * n7 + 64 * n6 + 32 * n5 + 16 * n4 + 8 * n3 + 4 * n2 + 2 * n1 + n0 3X8168 ED November 02 Page: 7/14 8168ED01.DOC 8.1.4 Control byte 1 settings (default) MSB 1 LSB 0 Control byte 1 0 0 0 1 X 0 A 8.1.5 Control byte 2 (Bandselection) Band VHF low VHF high UHF FM Active port P7, P5 P7,P4 P5,P4 P7, P5, P2 MAD: MS: P7 1 1 0 1 P6 0 0 0 0 P5 1 0 1 1 P4 0 1 1 0 P3 0 0 0 0 2 P2 0 0 0 1 P1 0 0 0 MS P0 MAD MAD MAD MAD Programmable module address I C IF 2 0 = Slave address I C IF = 43[hex] 2 1 = Slave address I C IF = 42[hex] Forced Mono at FM mode: 0 = Stereo Mode with capability of stereo indication 1 = Forced Mono Mode 8.1.6 Read data format MSB 1 POR R/W : POR : FL : I2, I1, I0: Address byte Status byte 1 FL 0 I2 0 I1 0 I0 MA1 A2 MA0 A1 LSB R/W A0 A A 1 = Read mode Power on reset flag ( POR =1 at power on) In lock flag (FL= 1 when PLL is locked) Digital levels for I/O ports P2, P1 and P0 respect. In case of FM I1 = 1: Stereo indication I2, I0 not defined A2, A1, A0: FM-AFC or FM-AGC or SIF-AGC radio output detection A2 A1 A0 SIF-AGC radio output *1) FM-AGC radio output *2) 1 0 0 not defined not defined 0 1 1 > 20dBµV normal signal 0 1 0 5dBµV … 20dBµV weak signal 0 0 1