- 您现在的位置：买卖IC网 > PDF目录48102 > YMF721-S SPEECH SYNTHESIZER, PQFP100 PDF资料下载
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： | 2/41页 |
| 文件大小： | 324K |
| 代理商： | YMF721-S |
第1页当前第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
YMF721
July 10, 1997
- 10 -
Notes:
: Don’t care
When address has been written into FM block, the time required to wait until writing of address
or data into Wavetable block is started is 0 (zero) nsec. When address has been written into
Wavetable block, the time required to wait until writing of address or data into FM block is
started is also 0 (zero) nsec. When FM block has been accessed, it is necessary to wait 860 nsec
or more before the FM block can be accessed again.
Interrupt
AIRQ
: Interrupt signal ("H" : Interrupt)
YMF721 (OPL4-ML2) is able to provide one interrupt signal. There are two types of sources of
this interrupt signal as follows.
1) Two timer flags that are used for tempo counter of FM synthesizer
2) The flag that occurs when internal processor writes data into the Command response register
The flags described in 2) is disabled as a default.
3. Serial audio interface
YMF721 (OPL4-ML2) can be connected directly with an external DAC such as YAC516 through BCO,
LRO, WCO and DO3-0 pins.
BCO...
Outputs bit clock. The frequency of this clock is 48 fs. (fs is the sampling
frequency that is equal to the frequency of clock outputted from LRO.) Typical
duty factor of this signal is 50 %.
LRO...
Specifies a channel for serial audio data. When LRO is "H", data is outputted
from left channel, or when "L", from right channel. Frequency of this clock is
44.1 kHz. Typical duty factor of this signal is 50 %.
WCO...
Frequency of this clock is 88.2 kHz. Typical duty factor of this signal is 50 %.
DO3-0...
These pins output serial audio data as follows.
DO3...
Outputs data of Wavetable whose effect send level has been adjusted.
DO2...
Outputs data that is the mixture of those of FM and Wavetable.
DO1...
Outputs Wavetable data.
DO0...
Outputs FM data.
Format of the serial audio interface is as follows.
0
10
1
2
3
4
5
6
7
8
9
10
11
15 14 13 12
0
1
2
3
4
5
6
7
8
9
10
11
15 14 13 12
BCO
DO3-0
24 BCO
LRO
WCO
Format of YMF721 (OPL4-ML2) serial audio interface
Left Channel
Right Channel
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 |
发布紧急采购，3分钟左右您将得到回复。