- 您现在的位置：买卖IC网 > PDF目录48103 > YMU757B-QZ TONE/MUSIC SYNTHESIZER, PQCC20 PDF资料下载
参数资料
| 型号： | YMU757B-QZ |
| 元件分类： | 音频合成 |
| 英文描述： | TONE/MUSIC SYNTHESIZER, PQCC20 |
| 封装： | LEAD FREE, QFN-20 |
| 文件页数： | 18/43页 |
| 文件大小： | 990K |
| 代理商： | YMU757B-QZ |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页当前第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页
YMU757B
-25-
Interrupt sequence
An interrupt from LSI (/IRQ-"L") occurs when the data amount in FIFO is less than the set value.
For example, supposing that 10h (16b) is set for the IRQ point of $34h, FIFO is full with the data before starting the
melody as described above under "Settings and procedure to generate melody".
Once the melody is started, the musical score data is processed and the data in FIFO reduces continuously. When the
remaining data amount becomes 16 bytes or less, the /IRQ terminal becomes "L" and an interrupt signal is transmitted to
the external microprocessor.
When an interrupt signal is detected, set "0" for IRQE and enter the musical score data into FIFO before it becomes
empty. As overwriting the data into the filled FIFO is prohibited, enter the data into FIFO by the amount not causing
overwriting (16 data in this case).
Flow chart
Execute each register setting following the steps described under
"Settings and procedure to generate melody".
Start the melody.
As the sounds are produced, the musical score data are processed in the LSI.
Has the remaining data in FIFO reduced to the IR
No
point specified by the $34h setting or less?
Yes
Set the IRQ enable bit (IRQE) to "0" and enter the data into
FIFO, observing the following precautions.
Be sure to enter the data before FIFO becomes empty.
Overwriting the data into the filled FIFO is prohibited.
Do you want to stop the melody?
No
Yes
Stop the melody. (ST=0)
相关PDF资料 |
PDF描述 |
|---|---|
| YMU757B-Q | TONE/MUSIC SYNTHESIZER, PQCC20 |
| YMU757B | 1-4 CABLE/SATELLITE TV SPLITTER, 2GHZ |
| YMU757B | TONE/MUSIC SYNTHESIZER, PQCC20 |
| YMU757 | TONE/MUSIC SYNTHESIZER, PDSO20 |
| YMU759-Q | TONE/MUSIC SYNTHESIZER, PQCC32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| YMU759 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SYNTHESIS LSI FOR PORTABLE TELEPHONE |
| YMU759B-Q | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC |
| YMU762 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Mobile Audio 3 |
| YMW025 | 制造商:YEONHO 制造商全称:YEONHO ELECTRONICS 功能描述:2.50mm PITCH CONNECTOR |
| YMW025-02R | 制造商:YEONHO 制造商全称:YEONHO ELECTRONICS 功能描述:2.50mm PITCH CONNECTOR |
发布紧急采购，3分钟左右您将得到回复。