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Yamaha OPL3-SA3 YMF715E, Interrupt Channel configuration R/W, Interrupt IRQ-Astatus RO

Models: OPL3-SA3

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Interrupt Channel configuration (R/W):

Hardware Volume Interrupt Flag : If configured VEN=1(index 0Ah, D7 bit), the interrupt occurs when either /VOLUP or /VOLDW is low level or when both are low level to request mute. The interrupt will be posted in the IRQ-A channel, if IRQ-A MV=1 (index 17h, D4 bit).

Note that when the muting is in effect, the subsequent mute requests which does not change any register contents will generate interrrupts. The ignored UP/DOWN requests (UP requests with 0dB Volume attn., DOWN requests with -30dB) will not generate interrupts.

This bit is cleared upon host's reading the Master Volume Lch register at index 07h.

Internal FM-synthesizer Timer Flag : Note that this flag will become undefined for the configurations (SEL=3,4,7) using external synthesizer (i.e. OPL4-ML/ML2).

MPU401 Interrupt Flag

Sound Blaster compatible Playback Interrupt Flag Timer Flag of CODEC

Recording Flag of CODEC

Playback Flag of CODEC

YMF715E

Interrupt Channel configuration (R/W):

Index	D7	D6		D5	D4	D3	D2		D1	D0


		IRQ-B					IRQ-A
	OPL3	MPU		SB	WSS	OPL3	MPU		SB	WSS

There are four devices (WSS (Windows Sound System CODEC), SB (Sound Blaster compatible portion), OPL3, MPU (MPU401)) that can be an interrupt source. This register specifies what interrupt source is routed to two physical interrupt (IRQA and IRQB) of OPL3-SA3. The device written to ”1” is assigned to the corresponding interrupt. And by writing all “1” to upper or lower half byte, it is possible to share all interrupt sources to a single physical interrupt line.

default : 69h

IRQ-A: WSS + OPL3

IRQ-B: SB + MPU401

Notice)

Do not assign a device to both IRQA and IRQB.

Interrupt (IRQ-A) status (RO):

Index	D7	D6	D5	D4	D3	D2	D1	D0


04h	-	MV	OPL3	MPU	SB	TI	CI	PI

This register is the status register that indicates which is the interrupt source of IRQA. When an interrupt occurs, the corresponding bit becomes “1” and its flag (except MV bit) is cleared when the interrupt routine is completed. This register is not cleared by writing to this register.

MV...

OPL3...

MPU...

SB...

TI...

CI...

PI...

May 21, 1997

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Yamaha OPL3-SA3 specifications YMF715E, Interrupt Channel configuration R/W, Interrupt IRQ-Astatus RO

Contents

YMF715E FEATURESOUTLINE OPL3-SA3YMF715E PIN CONFIGURATION YMF715E-S100 pin SQFP Top View Analog Input & Output 24 pins PIN DESCRIPTIONISA bus interface 36 pins YMF715ETotal 100 pins Multi-purposepins : 13 pinsOthers 27 pins YMF715EBLOCK DIAGRAM YMF715E1-1. Multi-purposefunction FUNCTION OVERVIEW 1.Multi-purposepinYMF715E Mutil-purposepins 1-2.Pin descriptionYMF715E OPL3-SA3 1-3.System Block DiagramYMF715E-S 16V8OPL3-SA3 YMF715EYMF715E-S OPL4-ML/ML2YMF715E OPL4ML/ML2 LRO OPL3-SA3OPL4 YMF715EOPL3-SA3 ML/ML2 LROOPL3-SA3 YMF715EYMF715E-S OPL4-ML/ML2OPL3-SA3 YMF715EYMF715E-S OPL42. ISA Interface 2-1.PnP Auto-ConfigurationmodeYMF715E Card Control Registers 2-2.PnP ISA Configuration RegisterYMF715E MayLogical Device Number = 1 Joystick YMF715ELogical Device Number = 0 SA3 Sound System Logical Device Number = 2 MODEM Optional1 LDN=0 SA3 Sound System 2-3.Recommended Resource DataYMF715E 3 LDN=2 MODEM 2 LDN=1 JoystickYMF715E 4 LDN=3 CD-ROM 2-4.Manual Configuration ModeYMF715E 5-2.Hardware Volume Interrupt 5. Hardware Volume Control5-1.Hardware Volume up/down/mute Control 3. Download Resource data7. 3D Enhanced Control Yamaha 3D Enhanced Controller6. DAC interface Fig.7-13D Enhanced Control Block Diagram8. Power Management YMF715E8-2.Power Save Mode 8-1.Partial Power Down ModeYMF715E 8-4.Suspend/Resume Mode YMF715EOPL3 Status Register RO YMF715EOPL3 Data Register Array 0 R/W YMF715E 9-1-2.Sound Blaster Pro compatibilityOPL3 Data Register Array 1 R/W CMD Support Function 9-1-2-1.DSP CommandYMF715E May9-1-2-2.Sound Blaster Pro compatibility Mixer YMF715EMay WSS Mixer YMF715ESB Mixer SB MixerYMF715E 9-1-3.WSS compatible 16-bitCODECWSS Configuration Register RO WSS Status Register ROYMF715E WSS CODEC Indirect Registers R/WPower Management R/W 9-1-4.MPU4019-1-5. OPL3-SA3control register YMF715EYMF715E System control R/WYMF715E Interrupt Channel configuration R/WInterrupt IRQ-Astatus RO YMF715E DMA configuration R/WInterrupt IRQ-Bstatus RO MIC Volume R/W Master Volume Lch R/WMaster Volume Rch R/W YMF715EWSS DMA Base counter R/W YMF715EMiscellaneous WSS Interrupt Scan out/in R/WYMF715E SBPDAYMF715E i Scan OutAnalog Block Partial Power Down R/W Digital Block Partial Power Down R/WYMF715E 3D Enhanced controlBASS R/W YMF715E3D Enhanced controlWIDE R/W 3D Enhanced controlTREBLE R/WYMF715E 9-2.Joystick9-3.MODEM Multi-purposeSelect Pin Status RO9-4. CD-ROM YMF715EAbsolute Maximum Ratings Electrical CharacteristicsDC Characteristics 1DVDD = 5.0±0.25V Recommended Operating ConditionsDC Characteristics 2DVDD = 3.3±0.30V YMF715EYMF715E AC CharacteristicsSerial Audio Zoomed Video Interface Input Fig.9 YMF715E I/O Read Cycle I/O Write CycleYMF715E Fig.3 8bit Mono & ADPCM DMA Read Cycle 8bit Mono & ADPCM DMA Write CycleDRQ3,1,0 DACK3,1,0 YMF715EFig.5 16bit Stereo DMA Cycle 8bit Stereo or 16bit Mono DMA CycleIOW,/IOR YMF715ESYNCS or CDCS1,0 or MCS Fig.7 Reset Pulse WidthRESET Fig.8 Serial Audio InterfaceAnalog Output Characteristics Analog CharacteristicsAnalog Input Characteristics YMF715EExternal Dimensions YMF715EAGENCY YAMAHA CORPORATIONIMPORTANT NOTICE YMF715E