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參數資料
| 型號： | MSM9552 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | LSI for FM Multiplex Data Demodulation(多路復用數據解調器的LSI) |
| 中文描述： | LSI的調頻多路數據解調（多路復用數據解調器的大規(guī)模集成電路） |
| 文件頁數： | 1/7頁 |
| 文件大?。?/td> | 59K |
| 代理商： | MSM9552 |
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MSM9552/MSM9553
Semiconductor
MSM9552/MSM9553
GENERAL DESCRIPTION
The MSM9552 and MSM9553 are LSI devices which demodulate FM character multiplex signals in
the DARC (DAta Radio Channel)* format to acquire digital data. The MSM9552 and MSM9553
operate on 5V and 3V, respectively. In the DARC format, baseband signals at ordinary FM
broadcasting frequencies are multiplexed with 16k-bps digital data which are L-MSK-modulated at
76kHz.
Each of the MSM9552 and MSM9553 has a bandpass filter consisting of SCF, frame synchroniza-
tion circuit, error correction circuit, etc. on a single chip.
So, a system for acquisition of digital data can be easily constructed by externally mounting an FM
receiver tuner, microcontroller for control, and memory for temporary storage of data.
The MSM9552 and MSM9553 have a simple configuration, and are equipped with only necessary
functions. By making changes to software for the external microcontroller, the MSM9552 and
MSM9553 can meet the various requirements of FM multiplex broadcasting services which will be
offered in future.
These LSI devices are best suited to the radio sets and information devices for FM character multiplex
broadcasting, which started in Japan in October 1994. Especially, the MSM9553 is suitable for
portable units.
* DARC is a registered trademark of NHK ENGINEERING SERVICES, INC.
Note that a contract needs to be made with NHK Engineering Service if a manufacturer produces/
sells electronic equipment utilizing the DARC technology.
FEATURES
Built-in bandpass filter (SCF)
Built-in block synchronization circuit and frame synchronization circuit
Setting of the number of synchronization protecting stages
Regeneration of data clocks by digital PLL
1T delay detection
Built-in error correction circuit
Built-in layer 4 and layer 2 CRC check circuit
Microcontroller parallel interface
Clock output for external devices (64kHz to 8.192MHz selectable)
International standard frame format
Power source:
5V (MSM9552), 3V (MSM9553)
Package
44-pin plastic QFP (QFP44-P-910-0.80-2K)
LSI for FM Multiplex Data Demodulation
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| MSM9554 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:LSI Devices for FM Multiplex Data Demodulation |
| MSM9554GS-2K | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:LSI Devices for FM Multiplex Data Demodulation |
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