YMF715E Просмотр технического описания (PDF) - Yamaha Corporation

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YMF715E

5.0/3.3V; OPL3-SA3 OPL3 single-chip audio system 3

Yamaha Corporation 

YMF715E

1-3. System Block Diagram

(1) SEL=1 (Sound Card and Combo Card Add-in)

SD15-8

SA2-0

SA15-12

AEN

RESETDRV

SD7-0

/ENH

/RESET

/ENL

/IOW,/IOR

SA11-0

SD7-0

MP0

RESET

MP1

/IOW,/IOR

A11-0 YMF715E-S

D7-0 (OPL3-SA3)

AUX2L

AUX2R

} /MCS

MODEM I/F

MIRQ

EEPROM

CLKO

BCO

RESET

LRO

DO2

OPL4-ML/ML2

YAC516

1. External PAL(16V8 etc.)

(i) connect the signal AEN* generated by decoding SA15-12 and AEN to the AEN of OPL3-

SA3.

(ii) generate the /G(enable) signal for Data Bus Buffer (LS245) by decoding the /CDCS1-0 and

SA2-0.

(iii) generate the /RESET signal from RESETDRV.

May 21, 1998

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