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参数资料
| 型号： | YMF715E-S |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封装： | SQFP-100 |
| 文件页数： | 28/53页 |
| 文件大小： | 455K |
| 代理商： | YMF715E-S |
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YMF715E
May 21, 1998
-34-
Interrupt Channel configuration (R/W):
Index
D7
D6
D5
D4
D3
D2
D1
D0
IRQ-B
IRQ-A
03h
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...
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.
OPL3...
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).
MPU...
MPU401 Interrupt Flag
SB...
Sound Blaster compatible Playback Interrupt Flag
TI...
Timer Flag of CODEC
CI...
Recording Flag of CODEC
PI...
Playback Flag of CODEC
相关PDF资料 |
PDF描述 |
|---|---|
| YMF715E | OPL3 Single-Chip Audio System 3(OPL3 单片音频系统3) |
| YMF721-S | SPEECH SYNTHESIZER, PQFP100 |
| YMF721 | FM + Wavetable Synthesizer LSI |
| YMF724F-V | SPECIALTY CONSUMER CIRCUIT, PQFP144 |
| YMF724 | high performance audio controller for the PCI Bus |
相关代理商/技术参数 |
参数描述 |
|---|---|
| YMF721 | 制造商:LSI 制造商全称:LSI 功能描述:FM + Wavetable Synthesizer LSI |
| YMF724 | 制造商:YAMAHA 制造商全称:YAMAHA CORPORATION 功能描述:high performance audio controller for the PCI Bus |
| YMF724F | 制造商:YAMAHA 制造商全称:YAMAHA CORPORATION 功能描述:high performance audio controller for the PCI Bus |
| YMF724F-V | 制造商:YAMAHA 制造商全称:YAMAHA CORPORATION 功能描述:high performance audio controller for the PCI Bus |
| YMF740C | 制造商:未知厂家 制造商全称:未知厂家 功能描述:DS-1L |
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