Yamaha OPL3-SA3 YMF715E-S, OPL4-ML/ML2, 2 SEL=2 Sound Card and Combo Card for Add-in

YMF715E

2. Master Clock

Both 33.8688MHz and 24.576MHz are used or 14.31818MHz and clock module

(ex.MK1420 by Micro Clock) are used.

3. OPL4-ML/ML2

The external DAC (YAC516) is necessary for wavetable upgrade.

(2) SEL=2 (Sound Card and Combo Card for Add-in)

RESETDRV	RESET	MP0
/IOW,/IOR	/IOW,/IOR	MP1
AEN	AEN	YMF715E-S
SA15-12	MP9-6
SA11-0	A11-0	(OPL3-SA3)
SD7-0	D7-0

		X24I					AUX2L
		X33I					AUX2R
		MP2	MP3	MP4	MP5		TXD
24.576MHz	33.8688MHz	ROMCLK	ROMCS	ROMDI	ROMDO		TXD
		EEPROM					RXD
							CLKO
						RESET	BCO
							LRO
						XI	DO2
MK1420		14.31818MHz				OPL4-ML/ML2

/MCS }

MODEM I/F

MIRQ

YAC516

1. OPL4-ML/ML2

The external DAC (YAC516) and the clock module (ex.MK1420 by Micro Clock) are

necessary for wavetable upgrade.

2. MK1420

The MK1420 is the clock module that generates all clocks necessary for this chipset . It is by

Micro Clock and its package is SOP8.

May 21, 1997

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