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参数资料
| 型号： | YMF721-S |
| 元件分类： | 音频合成 |
| 英文描述： | SPEECH SYNTHESIZER, PQFP100 |
| 封装： | SQFP-100 |
| 文件页数： | 40/41页 |
| 文件大小： | 324K |
| 代理商： | YMF721-S |
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YMF721
July 10, 1997
- 8 -
1-2. System without MPU401 UART
This section describes an example of a system that does not have MPU401 UART in it.
In this example, MPU401 UART of YMF721 (OPL4-ML2) is used.
FM synthesizer of this LSI is compatible with applications that support AdLib/Sound Blaster, and Wavetable
synthesizer is compatible with applications that support MPU401.
Note :
For the above case, MPU401 port of YMF721 (OPL4-ML2) must be made active because the system does not
have MPU401 UART in it. Addresses of standard ports through which reading or writing of registers of
YMF721 (OPL4-ML2) is made are as follows.
1) /OPLCS
: 388 - 38Fh (8byte)
2) /MPUCS
: 330 - 331h (2byte)
As a source of master clock for YMF721 (OPL4-ML2), use a crystal oscillator by connecting it to XI and
XO pins, or use the clock of 33.8688 MHz from the system. Connect BCO, LRO, DO2, /PDOUT and
CLKO directly to YAC516 (DAC16-L) as shown to convert serial data output to analog signal. Then, it is
recommended to amplify the volume of source of YMF721 through the suitable gain as shown for the
purpose of equalizing the volumes of multiple sources.
IOCHRDY
SA2-0
SA15-0
AEN
RESETDRV
/IOW
/IOR
SD7-0
ARDY
RESET
A2-0
/IOW
/IOR
ADB7-0
ABDIR
A
ddr
es
s
Dec
o
d
er
L
S
245
YMF721
(OPL4
-ML2
)
Lch
Lch out
Rch
Rch out
LRCK
MCLK
/PDIN
BCLK
SDATA
X
I
XO
/OPLCS
/MPUCS
FSP
RXD
/PDOUT
CLKO
BCO
LRO
DO2
YAC516
Ga
in
u
p
相关PDF资料 |
PDF描述 |
|---|---|
| YMF721 | FM + Wavetable Synthesizer LSI |
| YMF724F-V | SPECIALTY CONSUMER CIRCUIT, PQFP144 |
| YMF724 | high performance audio controller for the PCI Bus |
| YMF724F | high performance audio controller for the PCI Bus |
| YMF724F-V | high performance audio controller for the PCI Bus |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| YMF740CV | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Industrial Control IC |
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