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參數(shù)資料
| 型號(hào)： | HT81XXX |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | EasyVoiceTM Speech |
| 中文描述： | EasyVoiceTM講話 |
| 文件頁(yè)數(shù)： | 13/19頁(yè) |
| 文件大小： | 201K |
| 代理商： | HT81XXX |
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HT81XXX
Rev. 1.50
13
November 21, 2006
6Hz/6HzB flash
When voices are playing, the FLAG1 pin outputs a
6Hz signal to drive a LED. The signal is active low,
25% duty. Once the voice output is terminated, the
FLAG1 pin becomes a floating output. When the
FLAG1 and the FLAG2 pins are optioned as 6HzB
and 6Hz outputs, they will alternately output at a
6Hz rate.
Busy output
When a voice group is playing, the outputs of both
FLAG1 and FLAG2 are turned low, indicating that the
chip is busy.
In addition to the above-stated output signals, FLAG1
can also generate one of the following signals by code
option:
End-pulse output
When the voice output is completed, the FLAG1 pin
outputs an active low pulse. The pulse width can be
programmed depending on the customer s require-
ments.
The FLAG1 as well as FLAG2 pins are both floating
outputs when the chip is in the standby state.
Volume Control
The function of the volume control can be set by mask
option. Acode is written in the function table for the pur-
pose of controlling the volume of each section output af-
ter the volume control function is chosen. There are two
volume options, namely; full range and half range.
I/O2
The I/O2 pin is a PWM structure. It outputs voice signals
to drive a speaker through an external NPN transistor
when the chip is active. The OUT1 and OUT2 pins are
configured as PWM structure which can drive 8/16/32
speaker directly.
An 8050 type transistor with h
FE
150 is recommended
for an output driver.
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