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): 56/63頁
文件大小: 563K
代理商: VV6410C036
Introduction
STV0680B + VV6444/6410/6500
6/63
Version 3.4
1
Introduction
1.1
Digital camera chipset
This document describes the features and functionality of a CMOS chipset, comprising an
STMicroelectronics (ST) CIF or VGA resolution sensor and an STV0680B companion processor
(DCA1), as well as outlining what peripheral components are required/supported in order to
complete a camera using the chipset. Such a camera is particularly suited to dual-mode digital stills
or toy applications.
In stills mode, the camera stores raw image data in memory. The camera carries out no colour
processing, ensuring its simplicity and low cost. Subsequent download of raw data to a PC or
Macintosh for processing is done through an RS232 or USB interface, through demo software, a
TWAIN driver, or OEM custom application. The license to use the colour algorithm (embedded in
the PC or Mac driver software) is included in the price of the chipset.
A video option is provided, when tethered through USB, which can allow for Video for Windows
applications, and ‘video clips’ can be recorded while untethered by continuously capturing images
while in ‘Continuous’ mode, then downloaded to the PC for playback, using software to create an
AVI file.
Using STV0680B-003, the firmware also includes the capability to trigger a flashgun module
through a two wire interface (enable input and trigger output), and the capability to record audio
sounds into the SDRAM, for subsequent upload to the PC, or to replay audio sounds which have
either been recorded on the camera or dowloaded from the PC (stored on the PC as.WAV files).
Precise design guidelines are available from ST as a reference design (see
Section 4). A software
development kit (SDK) for PC is available from ST, to interface to the camera and provide the basis
for developing a custom software application for stills and/or video, which includes colour
processing software as object code.
Figure 1 : Typical camera system block diagram
CMOS Sensor
Sensor data
STV0680B
USB interface
16MBit or 64MBit
SDRAM
Lens +
RS232
I/F
USB
I/F
memory
I/F
RS232 interface
GPIO
Sensor
I/F
PWM
LED
4.5 - 6v Battery e.g.
12MHz XTAL
Audio DAC
LCD
Driver
2 x 7 seg. LCD
Push
Transceiver
Piezo
“Mode”
Buzzer
“Shutter
4-5v (Nominal) supply from Battery or USB
3-4 x AA, AAA, etc.
Power
Management
Circuit (Discretes)
Detect Low
Battery
to PC
Circuit (Discretes)
Sensor clock
IR Filter
VV6500 (VGA)
VV6410/6411(CIF)
Image Array
Audio
Pre-Amp
Speaker
Microphone
Comparator
Buttons:
/Record”
OEM Flashgun
Enable/Trigger
Module
Audio
Enable/Trigger
Flashgun
Amplifier
VReg
3v3 supply
Subject
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