Details, datasheet, quote on part number: MX839P
PartMX839P
CategoryAnalog & Mixed-Signal Processing
DescriptionDigitally Controlled Analog I/o Processor
CompanyConsumer Microcircuits Limited
DatasheetDownload MX839P datasheet
  

 

Features, Applications

Features

x 4 input intelligent 10 bit A/D monitoring subsystem 4 High and 4 Low Comparators External IRQ Generator Free Running Operation x Three 8/10 bit DACs x Two Variable Attenuators x Selectable A/D Clock Frequencies x Full Control via 4-wire Serial Interface x Low Power 3.0 Operation

x PCS, Cellular, LMR, Wireless Transceivers, and General Purpose x Monitor and Control: RSSI, Battery State, Temperature, VSWR, and Error Voltages x Digital Trim and Calibration: VCOs, TCXO, Power Output, Bias, Current, IF Gain, Deviation, Modulation Depth, and Baseband Gain

The is a low power CMOS µC peripheral device which provides digitally controlled calibration, trimming, and monitoring functions for PCS, cellular, LMR, wireless transceivers, and general purpose applications. Featuring a four input intelligent 10 bit A/D monitoring subsystem, an interrupt generator, three 8/10 bit DACs, and two variable attenuator functions, the MX839 automatically monitors, produces, and trims up to nine analog signals via a simple four wire serial control bus. The free running A/D intelligent monitoring subsystem includes independent high and low limit comparators for each of four analog input signals which can be configured to generate external µC interrupts. The MX839's high level of integration reduces end product parts count, component size, and software complexity. MX839 digital trimming functions also reduce manufacturing costs by eliminating manual trimming operations. Featuring an operating range to 5.5V the MX839 is available in 24-pin SSOP (MX839DS), 24-pin SOIC (MX839DW), and 24-pin PDIP (MX839P) packages.

© 1998 MXxCOM Inc. www.mxcom.com Tele: Fax: 336 744-5054 Doc. 20480164.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.

1 Block Diagram................................................................................................................................ 3 2 Signal List....................................................................................................................................... 4 3 External Components..................................................................................................................... 5 4 General Description....................................................................................................................... 6

Variable Attenuators............................................................................................................................... 6 Digital to Analog Converters................................................................................................................... 6 Analog to Digital Converter and A/D Clock Generator........................................................................... 6 Magnitude Comparators and Interrupt Request..................................................................................... 7 Software Description.............................................................................................................................. 7 Read Only Registers (8-Bit and 16-Bit).................................................................................................. 9 Write Only Register Description............................................................................................................. 9 Read Only Register Description............................................................................................................ 13

MXxCOM, Inc. reserves the right to change specifications at any time and without notice.

© 1998 MXxCOM Inc. www.mxcom.com Tele: Fax: 336 744-5054 Doc. 20480164.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.

HIGH COMPARATOR A/D REG1 LOW COMPARATOR A/DIN4 4:1 MUX A/D 10 bit HIGH COMPARATOR A/D REG2 LOW COMPARATOR HIGH COMPARATOR A/D REG3 LOW COMPARATOR HIGH COMPARATOR A/D REG4 LOW COMPARATOR

ADC COMP IRQ REPLY DATA COMMAND DATA CS SERIAL CLOCK XTAL/CLOCK XTAL 4-wire SERIAL INTERFACE AND LOGIC CONTROL CLOCK OSCILLATOR AND DIVIDERS AVDD VSS VBIAS DVDD AVDD

© 1998 MXxCOM Inc. www.mxcom.com Tele: Fax: 336 744-5054 Doc. 20480164.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.


 

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