Example Of Access To Camera Registers - Dalsa 1M28-SA User Manual

One megapixel cmos stop action camera family

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User manual (54 pages)

Table Of Contents

Table of Contents

read, the desired data is transmitted as a complete byte in order to accelerate communication.

Faulty data transmissions can only be recognized using the stop bit. Additionally, there are internal

status registers (in the camera) which record failures during transmission. An attempt to access an

undefined camera register will be answered with CAN = 18H. An overview over the camera

feedback is shown in Table 29.

Table 29: Camera Feedback

Camera Feedback

Successful transfer

Failed transfer

Undefined access

Camera data

Example of Access to Camera Registers

For data transmission to the camera, the camera must be in slave mode, and the PC must be in

master mode. The camera receives data on the RX lead and transmits data to the PC via the TX

lead.

Table 30 summarizes the individual steps of a write/read of the register 06H and 07H from the

master's point of view. Additionally a read process of an undefined register 16H is shown.

Table 30: Accessing Camera Registers

Steps

03-32-00525-04

PRELIMINARY

arbitrary data

RX/TX

BIN Code

0100 0110

0000 0110

1000 0101

0000 0110

1100 0101

0000 0110

0100 0111

0000 0110

1000 1010

0001 0101

1000 1010

0000 0110

1100 1010

0000 0110

0101 0101

0000 0111

Abbreviation

ACK

NAK

CAN

DATA

HEX

Comments

Code

Write address 06H in the address register of

the camera