VL6522

Overview

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1

Overview

1.1

Architecture

The design includes an image control bus (ICB) mastering unit in the form of a

microcontroller used for top-level autonomous management of power, SFPs, USB standard,

audio and video class command handling and translation to IDP video and audio processing

modules. The microcontroller is also used to run auto exposure and white balance functions.

There are two data pipelines: the audio data pipe (ADP) and the image data pipe (IDP).

1.2

Technical specifications

1.3

Power consumption

From a power consumption perspective the principal modes are:

1.

Active - high speed streaming of audio and video, or video only, or audio only.

2.

Suspend - standby mode, with lowest current consumption in conformance with the

USB2.0 standard.

Table 1.

Technical specifications

Parameter

Values

Image size

640 x 480 (VGA)

Pixel size

3.6 µm x 3.6 µm

Array size

2.32 mm x 1.74 mm

Exposure control

auto

Frame rate

auto or adjustable up to 60 fps

Clock frequency

12 MHz

Output format

USB2.0 (YUV2)

Output data rate

480 MHz (USB2)

Audio analogue gain

24 dB

Audio signal/noise ratio

59 dB

Supply voltage (V)

5

3.3

1.8

Supply current (mA typ.)

VGA 30 fps + audio

14.7

16.3

45.1

Total current consumption from single

1.

Typical value VGA @ 30 fps + audio

74.8 mA

Operating temperature

Package type

LGA36