1 MSM9560/msm9561 ? semiconductor general description the MSM9560/msm9561 is an ic which demodulates fm character multiplex signals in the darc (data radio channel) *1 format to obtain digtal data. the MSM9560 operates at 4.5 to 5.5 v and the msm9561 at 1.8 to 3.3 v. in the darc system, 16 kbps of digital data l-msk modulated at 76 khz is multiplexed on an ordinary fm broadcast base band signal. the MSM9560/msm9561 contains on one chip a band pass filter using a switched capacitor filter (scf) and a group of circuits including a frame synchronization circuit and an error correction circuit. by connecting an external fm receiver and memory for temporary data storage and by controlling them by the cpu, a system for obtaining digtal data can easily be constructed. the fm multiplex demodulation ics, the msm9500-series devices, are configured with minimum functions; so they will, merely by making changes to the software of the external microcomputer, be able to respond flexibly to the many fm multiplex broadcast services that are going to come about in the future. the MSM9560/msm9561 is best suited to radios and information processing devices that support darc fm multiplex broadcasting. it is also best suited to car radios and car navigation systems, and the msm9561 is especially suited to portable equipment. features ? pin compatible with msm9552/msm9553 ? built-in bandpass filter (scf) ? built-in block synchronization circuit and frame synchronization circuit ? setting of the number of synchronization protection steps can be changed ? data clocks are regenerated by digital pll ? 1t delay detection ? built-in vertical and horizontal error correction circuits ? built-in layer 4 and layer 2 crc processing circuit ? parallel interface with microcontroller ? clock output for external devices (64 khz to 8.192 mhz variable) ? compatible with the international standard frame format (itu-r rec. bs1194) ? power supply: 4.5 to 5.5 v (MSM9560), 1.8 to 3.3 v (msm9561) ? package: 44-pin plastic qfp (qfp44-p-910-0.80-2k) (product name: MSM9560gs-2k/msm9561gs-2k) ? semiconductor MSM9560/msm9561 ic for fm multiplex data demodulation preliminary
? semiconductor MSM9560/msm9561 2 block diagram ain data bus db0-db7 address ad0-ad5 cs wr rd clr + C 1t delay circuit lpf variable gain amp bpf (scf) xtal1 xtal2 xout xoutc d q ck db2 wr31 clr dv dd frequency divider ic internal clock limiter vref + C limiter sg lpf clock regeneration block synchronization frame synchronization timing control pn descrambler 34byte ram 2 layer 4 crc cpu interface data bus addressbus int filter section delay detection section digital signal processing section error correction & layer 2 crc read/write register
3 MSM9560/msm9561 ? semiconductor pin configuration (top view) nc : no-connection pin 44-pin plastic qfp 1 2 3 11 10 9 8 7 6 5 4 44 43 42 41 40 39 38 37 36 35 34 33 32 31 23 24 25 26 27 28 29 30 12 13 14 15 16 17 18 19 20 21 22 mout1 mout2 mout3 mon adetin av dd agnd xoutc mout0 mout5 mout6 int wr nc rd db0 db1 db3 nc iowr iord a4 a3 a2 db6 db5 cs xtal2 db7 ain a0 xout db4 sg mout4 db2 dgnd dv dd xtal1 a1 a5 clr nc nc
? semiconductor MSM9560/msm9561 4 pin descriptions function pin type description micro- computer interface 16 i write signal to internal register. 18 i read signal to internal register. 15 o interrupt signal to microcontroller. "l": an interrupt is generated. 31 i chip select signal. "l": read, write, and data bus signals become active. 40 i "l" : the internal registers are initialized and the device enters power down mode. 33-38 i address signal to internal register. 19-26 i/o data bus signal to internal register. 6 i fm multiplex signal input. 5 o analog reference voltage output pin. connect a capacitor between this pin and analog ground to prevent noise. 1 o analog section waveform monitoring pin. the analog block mode setting is specified by the analog control register. 2 i analog signal input pin for testing. 41 42 i digital section test signal input pins. internally pulled up. 8-14 o digital section test signal output and monitor output pins. 29 i 8.192 mhz crystal oscillator connection pin. 30 o 8.192 mhz crystal oscillator connection pin. 32 o pin for supply of 64 khz to 8.192 mhz clock to the outside. 7 i xout output control pin. "l"=clock output, "h"=output disabled. pulled up internally. 3 analog section power supply pin. 4 analog ground pin. 28 digital section power supply pin. 27 digital ground pin. tuner interface analog section test digital section test clock power supply symbol wr rd int cs clr a0-a5 db0-db7 ain sg mon adetin iord iowr mout0- mout6 xtal1 xtal2 xout xoutc av dd agnd dv dd dgnd
5 MSM9560/msm9561 ? semiconductor absolute maximum ratings (MSM9560) recommended operating conditions (MSM9560) electrical characteristics (MSM9560) parameter symbol condition rating unit power supply voltage av dd =dv dd ta=25c av dd dv dd C0.3 to +7.0 v input voltage output voltage v i v o C0.3 to av dd +0.3 C0.3 to dv dd +0.3 maximum power dissipation ta=25c, per package p d 400 mw ta=25c, per output 50 storage temperature t stg C55 to +150 c parameter symbol condition range unit power supply voltage av dd =dv dd av dd dv dd 4.5 to 5.5 v applied pin av dd dv dd crystal oscillation frequency f xtal 8.192 mhz 100 ppm xtal1 xtal2 fm multiplex signal input voltage composite signals including multiplex signals v ain 0.5 to 2 v p-p ain operating temperature t op C40 to +85 c parameter symbol condition min. unit supply current when operating, no load f=8.192 mhz i dd applied pin av dd dv dd typ. max. 14 28 ma 20 m a bpf pass band attenuation 72 - 80 khz variable gain amplifier gain: 0 db gain1 mon 3.0 db bpf stop band attenuation 0 - 53 khz variable gain amplifier gain: 0 db gain2 50 mon db bpf stop band attenuation 100 - 500 khz variable gain amplifier gain: 0 db gain3 50 mon db when in power down mode, no load
? semiconductor MSM9560/msm9561 6 absolute maximum ratings (msm9561) recommended operating conditions (msm9561) electrical characteristics (msm9561) parameter symbol condition rating unit power supply voltage av dd =dv dd ta=25c av dd dv dd C0.3 to +7.0 v input voltage output voltage v i v o C0.3 to av dd +0.3 C0.3 to dv dd +0.3 maximum power dissipation ta=25c, per package p d 400 mw ta=25c, per output 50 storage temperature t stg C55 to +150 c parameter symbol condition range unit power supply voltage av dd =dv dd av dd dv dd 1.8 to 3.3 v applied pin av dd dv dd crystal oscillation frequency f xtal 8.192 mhz 100 ppm xtal1 xtal2 fm multiplex signal input voltage composite signals including multiplex signals v ain 0.2 to 0.9 v p-p ain operating temperature t op C20 to +75 c parameter symbol condition min. unit current consumption when operating, no load f=8.192 mhz i dd applied pin av dd dv dd typ. max. 18ma when in power down mode, no load 10 m a bpf pass band attenuation 72 - 80khz variable gain amplifier gain: 0db gain1 mon 3.0 db bpf stop band attenuation 0 - 53khz variable gain amplifier gain: 0db gain2 50 mon db bpf stop band attenuation 100 - 500khz variable gain amplifier gain: 0db gain3 50 mon db (1) (2) 8ma 10ma av dd =dv dd =1.8 v when operating, no load f=8.192 mhz av dd =dv dd =3.0 v when operating, no load f=8.192 mhz
7 MSM9560/msm9561 ? semiconductor application circuit fm tuner fm multiplex data demodulation ic MSM9560 8 bits cpu rom buffer ram font rom lcd driver 16 kanji characters 2 lines lcd display keys microcomputer
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