4D SYSTEMS

µCAM-II

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Page 8 of 22

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6. Command Set

Command

ID Number

Parameter1

Parameter2

Parameter3

Parameter4

INITIAL

AA01h

00h

Image Format

RAW Resolution (Still

Image only)

JPEG Resolution

GET PICTURE

AA04h

Picture Type

00h

00h

00h

SNAPSHOT

AA05h

Snapshot Type

Skip Frame (Low Byte)

Skip Frame (High Byte)

00h

SET PACKAGE

SIZE

AA06h

08h

Package Size (Low Byte)

Package Size (High Byte)

00h

Set Baud Rate

AA07h

00h

00h

RESET

AA08h

Reset Type

00h

00h

XXh*

DATA

AA0Ah

Data Type

Length Byte 0

Length Byte 1

Length Byte 2

SYNC

AA0Dh

00h

00h

00h

00h

ACK

AA0Eh

Command ID

ACK Counter

00h / Package ID Byte 0

00h / Package ID Byte 1

NAK

AA0Fh

00h

NAK Counter

Error Number

00h

LIGHT

AA13h

Frequency Type

00h

00h

00h

*If the parameter is 0xFF, the command is a special Reset command and the module responds to it

immediately.

6.1. INITIAL (AA01h)

The host issues this command to configure the image size and Image Format. After receiving this command, the

module will send out an ACK command to the host if the configuration was successful. Otherwise, a NAK

command will be sent out.

6.1.1. Image Format

The uCAM-II can support 4 different image formats as follow:

8-bit Gray Scale (RAW, 8-bit for Y only)

03h

16-bit Colour (RAW, CrYCbY)

08h

16-bit Colour (RAW, 565(RGB))

06h

JPEG

07h

6.1.2. RAW Resolution

The uCAM-II can support 4 different image resolutions when in RAW mode:

80 x 60

01h

160 x 120

03h

128 x 128

09h

128 x 96

0Bh

6.1.3. JPEG Resolution

The uCAM-II embedded JPEG Code can support only multiples of 16 pixels, therefore the JPEG mode can only

support following image sizes. It is different from the RAW mode.

160 x 128

03h

320 x 240

05h

640 x 480

07h

6.2. GET PICTURE (AA04h)

The host issues this command to request a picture from the uCAM-II.