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MK1422 Datasheet

Part Number MK1422
Manufacturers Integrated Circuit Systems
Logo Integrated Circuit Systems
Description OPL3/4+Codec Portable Clock Source
Datasheet MK1422 DatasheetMK1422 Datasheet (PDF)

MK1422 OPL3/4+Codec Portable Clock Source Description The MK1422 is the ideal way to generate clocks for sound in portable computers. It provides clocks for Analog Devices’ or Crystal Semiconductor’s stereo codecs, and Yamaha’s OPL3L, OPL3LS, and OPL4. The MK1422 uses either a 14.318 MHz crystal, or a 14.318 MHz bus clock input to synthesize the clocks required to drive the codec, and the 33.868 MHz required for the FM or wavetable music synthesizer. It includes a power down pin to save power wi.

  MK1422   MK1422






OPL3/4+Codec Portable Clock Source

MK1422 OPL3/4+Codec Portable Clock Source Description The MK1422 is the ideal way to generate clocks for sound in portable computers. It provides clocks for Analog Devices’ or Crystal Semiconductor’s stereo codecs, and Yamaha’s OPL3L, OPL3LS, and OPL4. The MK1422 uses either a 14.318 MHz crystal, or a 14.318 MHz bus clock input to synthesize the clocks required to drive the codec, and the 33.868 MHz required for the FM or wavetable music synthesizer. It includes a power down pin to save power without using a FET. In an 8 pin SOIC, the MK1422 can save component count, board space, and cost over surface mount crystals, and increase reliability by eliminating three mechanical devices from the board. MicroClock offers many other parts with stereo codec support. MicroClock invented sound clocks, and has the widest product offering and greatest production experience on these devices. The MK1422 is pin compatible with MicroClock’s popular MK1420 when the 14.318MHz clock output is not used. See the MK14223 for 3.3V. Features • Packaged in 8 pin SOIC • Input crystal or clock frequency of 14.318 MHz • Output clock frequencies of 16.934 MHz, 24.576 MHz, and 33.868 MHz • 25mA drive capability at TTL levels • Advanced, low power CMOS process • Low jitter ensures full 16 bit S/N ratio • Insensitive to input clock duty cycle • Power down for portable computers AC Coupling/Portable Applications For applications in portable computers, see the MK14223, which is specified to operate at 3.3V. I.


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