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FX929A Datasheet(PDF) 4 Page - CML Microcircuits |
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FX929A Datasheet(HTML) 4 Page - CML Microcircuits |
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4 / 44 page  4-Level FSK Modem Data Pump FX929A © 1996 Consumer Microcircuits Limited 4 D/929A/4 1.3 Signal List Package P4/D2/D5 Signal Description Pin No. Name Type 1 IRQN O/P A 'wire-ORable' output for connection to the host µC's Interrupt Request input. This output has a low impedance pull down to VSS when active and is high impedance when inactive. 2 D7 BI ) 3 D6 BI ) 4 D5 BI ) 5 D4 BI ) 8-bit bidirectional 3-state µC interface data 6 D3 BI ) lines. 7 D2 BI ) 8 D1 BI ) 9 D0 BI ) 10 RDN I/P Read. An active low logic level input used to control the reading of data from the modem into the host µC. 11 WRN I/P Write. An active low logic level input used to control the writing of data into the modem from the host µC. 12 Vss Power The negative supply rail (ground). 13 CSN I/P Chip Select. An active low logic level input to the modem, used to enable a data read or write operation. 14 A0 I/P ) Two logic level modem register select 15 A1 I/P ) inputs. 16 XTALN O/P The output of the on-chip oscillator. 17 XTAL/CLOCK I/P The input to the on-chip oscillator, for external Xtal circuit or clock. 18 19 DOC 2 DOC 1 O/P O/P ) Connections to the Rx level measurement ) circuitry. A capacitor should be connected ) from each pin to VSS. |
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Similar Description - FX929A |
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