Yamaha OPL3-SA3 specifications YMF715E-S, 16V8, Ide Cd-Rom, System Block Diagram, OPL4-ML/ML2

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

/IOW,/IOR SA11-0

SD7-0

			/ENH			245		I/F
16V8			/RESET					IDE CD-ROM
			/ENL
						245
/CDCS0 /CDCS1		AEN*		CDIRQ
MP6	MP7		AEN	MP8			MP0	/MCS
RESET							MP1	MIRQ}MODEM I/F
/IOW,/IOR
A11-0				YMF715E-S
D7-0				(OPL3-SA3)
							AUX2L
							AUX2R
MP2	MP3	MP4	MP5		MP9		TXD
ROMCLK	ROMCS	ROMDI	ROMDO		CLKO	TXD
EEPROM					XI		RXD
							CLKO
							BCO	YAC516
					RESET		LRO
							DO2
					OPL4-ML/ML2

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, 1997

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