- 您现在的位置：买卖IC网 > PDF目录370715 > HT818D0 (Holtek Semiconductor Inc.) 22.4-Second LOG-PCM Speech PDF资料下载
参数资料
| 型号： | HT818D0 |
| 厂商： | Holtek Semiconductor Inc. |
| 英文描述： | 22.4-Second LOG-PCM Speech |
| 中文描述： | 22.4第二次登录的PCM语音 |
| 文件页数： | 9/14页 |
| 文件大小： | 202K |
| 代理商： | HT818D0 |
HT818D0
9
March 15, 2000
6Hz/6HzB flash
When voices are playing, the FLAG1 pin
outputs a 6Hz signal to drive an LED. The
signal is active low, 25% duty. Once the voice
output is terminated, the FLAG1 pin be-
comes a floating output. When the FLAG1
and the FLAG2 pins are optioned as 6HzB
and 6Hz outputs, they will be alternately
output at a 6Hz rate.
Busy output
When a voice group is playing, the outputs of
both FLAG1 and FLAG2 are turned low, indi-
cating that the chip is busy.
In addition to the above-stated output sig-
nals, FLAG1 can also generate one of the fol-
lowing signals by code option:
Voice indicator output
FLAG1 is active low when voices are play-
ing. FLAG1 is also turned low when a voice
section is output. The brightness of FLAG1
varies with the volume. FLAG1 becomes a
floating output after the silence section is
output or the voice output is terminated.
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 requirements.
The FLAG1 as well as FLAG2 pins are both
floating outputs when the chip is in the
standby state.
Volume control
The function of volume control can be set by
mask option. A code is written in the function
table for the purpose of controlling the volume
of each section output after the volume control
function is chosen. There are two volume op-
tions, namely, full range and half range.
AUD
The AUD pin is a PMOS open drain structure.
It outputs voice signals to drive a speaker
through an external NPN transistor when the
chip is active. The AUD pin becomes a floating
output when the chip is in the standby state.
The 8050 type transistor with h
FE
150 is rec-
ommended for an output driver.
: & ) ( !
: & ) ( !
,
7
: & ) ( !
: & ) ( !
Powered by ICminer.com Electronic-Library Service CopyRight 2003
相关PDF资料 |
PDF描述 |
|---|---|
| HT819D0(16DIP) | Speech Synthesizer |
| HT819D0(16SOP) | Speech Synthesizer |
| HT819D0 | FC/ACP F.O. SINGLE MODE IN-LINE ATTENUATOR 5 DB |
| HT81R30(18DIP) | Speech Synthesizer |
| HT82-99627 | VDSL Coupling Transformers |
相关代理商/技术参数 |
参数描述 |
|---|---|
| HT818D0(20DIP) | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Speech Synthesizer |
| HT818D0(20SOP) | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Speech Synthesizer |
| HT818D0(24DIP) | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Speech Synthesizer |
| HT818D0(24SOP) | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Speech Synthesizer |
| HT81-99628 | 制造商:BITECH 制造商全称:Bi technologies 功能描述:HDSL, HDSL2 Coupling Transformers |
发布紧急采购，3分钟左右您将得到回复。