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YMF715E-S View Datasheet(PDF) - Yamaha Corporation

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YMF715E-S Datasheet PDF : 53 Pages
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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
-8-
 

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