YMF715E-S datasheet(6/54 Pages) YAMAHA

Part #	YMF715E-S

Description	OPL3 Single-chip Audio System 3

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Manufacturer	YAMAHA [YAMAHA CORPORATION]

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YMF715E

May 21, 1997

-6-

■

■ FUNCTION OVERVIEW

1. Multi-purpose pin

1-1. Multi-purpose function

OPL3-SA3 can support the various functions listed below by programming SEL2-0 pins.

A. 16-bit address decode

B. EEPROM interface

C. Zoomed video port

D. CPU and DAC interface for OPL4-ML/ML2

E. MODEM interface

F. IDE CD-ROM interface

Following table shows what combinations of the above functions are available for each SEL2-0 pins.

SEL

16bit Dec.

EEPROM

ZV port

OPL4-ML/ML2

MODEM

CDROM

Remark

0

-

Test mode

1

○(*1)

○

-

○(*2)

○○(*1)

S/C,C/C(add-in)

2

○○

-

○(*3)

○

-S/C (add-in)

3

○(*4)

○

-

○

--

S/C (add-in)

4

○(*4)

-

○○

-

Note PC

5

○

-

○○(*3)

○

-

Note PC

6

-

reserved

7

○

--

○

-

M/B, Note PC

Where,

S/C : Sound Card

C/C : Combo Card (Sound and Modem)

M/B : Desktop Mother Board

SEL=0

SEL=1

SEL=2

SEL=3

SEL=4

SEL=5

SEL=6

SEL=7

SEL0 pin

0

101

010

1

SEL1 pin

0

011

001

1

SEL2 pin

0

000

111

1

Notice

*1 : External PAL is needed.

*2 : External wavetable synthesizer (ex.OPL4-ML/ML2) is mixed as analog signal using external

DAC.

*3 : Clock module (ex.MK1420) is used to generate the clock for OPL4-ML/ML2 and it will be

mixed analog signal by having an additional DAC.

*4 : External TTLs (ex.LS138) is needed.

See section 1-2 and 1-3 for implementation detail.

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