參數(shù)資料
型號(hào)： VV6410C036
廠商： STMICROELECTRONICS
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, CQCC36
封裝： LCC-36
文件頁數(shù)： 18/63頁
文件大?。?/td> 563K
代理商： VV6410C036
Version 3.4
25/63
STV0680B + VV6444/6410/6500
STV0680B hardware interfaces
With STV0680B-003, these pins are used, as detailed in
Table 6.
Their specific functions are detailed in the reference design and in the following documents
available from ST:
q
Audio: Application note AN1310
q
Flashgun: Application note AN1312
4.9.5
Audio record hardware interface (STV0680B-003 only)
The firmware implements a successive approximation A/D conversion by outputting successive
analogue levels through the DAC output, which are compared with the actual signal level (output
from the sensor microphone preamplifier), and the resultant high or low signal from the comparator
is read at GPIO4. The sampling frequency is 11kHz, and the successive approximation is done at 8
bits resolution per sample. It is not possible to speed up the sampling frequency due to the limitation
of STV0680B firmware speed.
An actual hardware implementation is given in the audio application note AN1310.
4.9.6
Audio playback hardware interface (STV0680B-003 only)
The firmware outputs the desired signal level through the DAC output, which is amplified to the
speaker or headphone socket. GPIO6 is used to switch off the amplifier during periods of audio
recording, to prevent the successive approximation waveform from being heard during periods of
recording, and to reduce the power consumption and unwanted crackle through the speaker.
An actual hardware implementation is given in the audio application note AN1310.
4.10
Flashgun hardware interface (STV0680B-003 only)
STV0680B-003 will revert to flashgun exposure when it detects GPIO2 is high. Ideally the hardware
should combine the two factors of (a) user intention (e.g. user switches on flashgun) and (b) charge
sensing (i.e. flash is charged up and ready to fire).
These two factors (a) and (b) are independent, since there may be a delay of several seconds
between switching on the flashgun charger, and the flashgun being able to fire. To revert to flashgun
exposure before the flashgun is completely charged up would cause very bad pictures to be taken
in low light conditions because there is no “l(fā)ow light” threshold when flashgun exposure is enabled,
since the camera expects a flash to fire. A suggested flashgun hardware interface is given in the
flashgun application note AN1312.
When flashgun exposure is enabled and the shutter button is pressed, a picture will be taken and
the flash trigger pin GPIO7 will be pulsed low at the correct point in time so that all lines of the
CMOS imager are exposed.
4.11
IR filter
An Infra-Red Blocking Filter is required to achieve correct colour response. The exact specification
for the IR filter characteristics are given in the reference design manual.
GPIO
2
4
6
7
Audio Record
No
Yes
No
Audio
Playback
No
Yes
No
Flashgun
Yes
No
Yes
Table 6 : Other GPIO usage with STV0680-003
相關(guān)PDF資料
PDF描述
VVZ70-16IO7 THYRISTOR MODULE|3-PH FULL-WAVE|HALF-CNTLD|CC|1.6KV V(RRM)|70A I(T)
VWA-0 Female Disconnect; Tab Width:0.250"
PBT-4B BRASS, TAB TERMINAL
PBT-4A 1.5 mm2, BRASS, PUSH-ON TERMINAL
VWO85-14IO1 THYRISTOR MODULE|AC SWITCH|TRIPLE|FULLY-CNTLD|1.4KV V(RRM)|27A I(T)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
VV6411 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL-MODE DIGITAL CAMERA CO-PROCESSOR
VV6411C036 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DUAL-MODE DIGITAL CAMERA CO-PROCESSOR
VV64200-000 制造商:Carling Technologies 功能描述:V-SERIES ROCKER SWITCH - Bulk
VV64400-000 制造商:Carling Technologies 功能描述:V-SERIES ROCKER SWITCH - Bulk
VV64413-000 制造商:Carling Technologies 功能描述:V-SERIES ROCKER SWITCH - Bulk
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*