AIWA ICM60
Instrukcja Serwisowa

Pin No. 33 34-50 51 52 53 54 55 56

Pin Name XOUT ADD16-ADDO CR VDD RASB CASIB CASOB CEIB

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Description Crystal oscillator connection output terminal. Externally connected sound memory (ROM/RAM) address output terminals. (Pins 41-44 not used.)

CR oscillator terminal. CR oscillator frequency= 600 kHz (typ). (Not used) � Power supply terminal for digital citcuitry (+). Externally connected sound memory (ROM/RAM) column address strobe, o chip enable, row address strobe, and address output terminals. (Depends on the status of terminals MEMO to MEM3.) (Pins 54-55 not used.)

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Externally connected sound memory (sub-memory (2). lM bit SRAM) chip enable output terminal. (Not used) Extemrdly connected sound memory (sub-memory (1)= lM bit SRAM) chip enable output terminal. (Not used) Externally connected sound memory (RAM) write enable output terminal. Externally connected sound memory (ROM and RAM) data input/output terminals. A/D converter overflow signal output terminal. (�H�: Overflow, P-channel open-drain output.) Power supply terminal for the analog circuitry (+). D/A converter output terrninrd. (PDM waveform shown below is output.) 6 T.. VDD DAOUT Ov � a Unit data n jT.. VDD� Logic �1� Ov m! foscx (Crystay oscillator frequency)= 18.432 MHz T = 61foscx = 325.5
~S.

57 58 59-66 67 68 69

CEOB WEB D7 -DO ALc VDDA DAOUT

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2T

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2T

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~� / /. a Unit data x & ; VDDI Logic �O� ~ ov~ 2T j

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70

VREF

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Built-in analog circuitry bias voltage terminal. (Connect a capacitor between this terminal and the VSSA terminal (pin76).) Built-in op-arnp 2 output terminal. Built-in op-arnp 2 inverting input terminal. AID converter input terminal. Built-in op-amp 1 output terminal. Built-in op-amp 1 inverting input terminal. Oround terminal for analog circuitry.

71 72 73 74 75 76 77 78-80

MC02 MC12 ADLN MCOI MCI1 VSSA Vss TST2 - TSTO

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Oround terminal for digital circuitry. Test terminals. (Normally, set these terminals to �L� or leave them open.)

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