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參數(shù)資料
| 型號： | EM22015 |
| 英文描述： | Dual PWM with Linear; Temperature Range: 0°C to 70°C; Package: 24-EPTSSOP |
| 中文描述： | EM22000系列-簡單的語音合成器具有PWM直接驅(qū)動 |
| 文件頁數(shù)： | 10/14頁 |
| 文件大小： | 80K |
| 代理商： | EM22015 |
EM
EM
EM22000 SERIES
22000 SERIES
SIMPLE VOICE SYNTHESIZER
5
* This specification are subject to be changed without notice.
10.15.2001
Preliminary
3.) One-shot without retrigger mode
Similar to one-shot with retrigger mode, the rising edge of the TR pin of this mode triggers the corresponding
trigger group, too. The difference is that under one-shot without retrigger mode, however, triggers are
accepted only when there's no voice playing.
4.) Level mode with SAF3 active
The triggered group plays recursively as long as the level of the TR pin remains high. Furthermore, the output
control pin SAF3 outputs active signal for output mode ACT and FLASH no matter its mode is enabled or
disabled. However, the output control pin SAF3 output "STOP" signal for output mode STOP no matter
its mode is enabled or disabled only when trigger is finished.
TRx
TRy
Vo
Group X
Group Y
Complete
group finished
Complete
group finished
Complete
group finished
Complete
group finished
De-bounce circuit
To prevent possible unwanted trigger caused from bounce pulse or noise, any bouncing pulse shorter than
20 ms is ignored by the de-bounce circuit. User should be aware that sufficient trigger pulse pulse width
should be applied on trigger inputs when interfacing EM22000 series to microprocessors.
Control output signals
EM22000 series offers three configurable control output pins (SAF1, SAF2,and SAF3) for external
control. There are three output functions for each control output pin optional by mask option. These
functions are defined as following :
Output type
Description
STOP
Output a 40 ms active pulse as soon as section playing is finished.
ACT
Output a steady active pulse while voice section is playing.
FLASH
Output flash pulses while voice section is playing.
Whether an SAF pin issues control output signal or not is defined section by section in coding procedure.
If the issue of an SAF pin is enabled by a section, it will send out control output signal according to the
option of output function (STOP, ACT and FLASH).
For example, if the output function of SAF pins are set to be :
SAF1 : STOP
SAF2 : FLASH regular
SAF3 : FLASH with volume
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