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參數(shù)資料
| 型號： | GA3217 |
| 廠商： | Gennum Corporation |
| 英文描述： | Venture-TM Digital DSP System |
| 中文描述： | 創(chuàng)業(yè)- TM數(shù)字DSP系統(tǒng) |
| 文件頁數(shù)： | 20/24頁 |
| 文件大?。?/td> | 261K |
| 代理商： | GA3217 |
GA3219 / GA3218 / GA3217 Preliminary Data Sheet
Proprietary and Confidential
32718 - 2
February 2005
20 of 24
There are four selectable reset modes as follows:
1. Shallow-reset mode, which after a low battery shutdown or transient shutdown,
will allow the Venture hybrid to immediately restart when the supply voltage
rises above the turn-ON threshold. The device will restart in the memory that
was last active when the shut down occurred. In summary, the device will
function until the supply voltage drops below the turn-OFF threshold, and will
recover when the device rises above the turn-ON threshold again.
2. Deep-reset mode, which after a low battery shutdown or transient shutdown,
will not allow the Venture hybrid to restart. Once a shut down occurs (i.e. once
the supply voltage drops below the turn-OFF threshold), the device remains
off until the supply voltage drops below approximately 0.3V and subsequently
rises above the turn-ON threshold. In order for the supply to drop below 0.3V,
the battery should be disconnected. Upon reconnecting the battery (preferably
a new battery) the supply voltage will rise above the turn-ON threshold, and
subject to the supply being stable, the device will restart.
3. Mixed mode, which is a combination of modes 1 and 2. The device starts up in
shallow-reset mode initially, then changes over to deep reset mode after five
minutes.
4. Transient reboot mode (recommended), which is a more advanced
combination of modes 1 and 2, plus some additional intelligence. The device
starts up in shallow-reset mode initially, so that after a low battery shutdown or
transient shutdown, the device immediately restarts when the supply voltage
rises above the turn-ON threshold. Once the device restarts, deep-reset mode
is applied and the device operates in the memory that was last active when
the shut down occurred. Additionally, the maximum output level is reduced
through a 2 dB reduction of the AGCo and peak clipper. This operating
condition is defined as transient reboot mode. The device operates in transient
reboot mode (meaning deep-reset mode and maximum output reduction are
applied) while monitoring the supply voltage. If the supply voltage remains
above the turn-on threshold for at least 30 seconds, the device is allowed to
exit transient reboot mode. The device returns to shallow-reset mode and the
maximum output is restored.
Generally, any low battery shutdown or transient shutdown that occurs while in
shallow-reset mode (or while in the shallow-reset mode component of mixed mode
or transient reboot mode) will result in the Venture hybrid restarting into the
memory that was last active when the shut down occurred. The Venture hybrid has
this memory restart capability for up to three memories. A restart in any memory
beyond the first three memories will cause the device to restart in the initial
memory, similar to the behavior when a battery is first connected. The transient
reboot mode described above also applies to up to three memories. Any additional
memories will use the shallow-reset mode behavior, and will restart in the initial
memory after a shutdown.
In any of the above reset modes, the Venture hybrid can be configured through
ARKonline to reduce the gain as the battery voltage drops. When the supply
voltage falls below the low battery threshold, low battery tones will be emitted and
the wideband gain will be reduced by 3dB. As the battery voltage continues to drop,
the low battery tones will continue and the wideband gain will continue to be
reduced. Once the turn-OFF threshold is reached, the device will shut down.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| GA3218 | Venture-TM Digital DSP System |
| GA3219 | Venture-TM Digital DSP System |
| GA3220 | Programmable Signal Processing Platform for Hearing Instruments |
| GA3222 | Advanta-TM ADRO-TM - Enabled DSP System |
| GA3224 | PARAGON-TM DIGITAL Two Channel DSP System |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GA3218 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:Venture-TM Digital DSP System |
| GA3219 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:Venture-TM Digital DSP System |
| GA3220 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:Programmable Signal Processing Platform for Hearing Instruments |
| GA3222 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:Advanta-TM ADRO-TM - Enabled DSP System |
| GA3224 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:PARAGON-TM DIGITAL Two Channel DSP System |
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