User Guide

Camera Module CCS Technical Documentation
Page 10 ¤Nokia Corporation Issue 2 11/02
Camera control interface
General
The camera control interface configuration is based on fast mode IIC(i.e. I
2
C) bus.
Slave address
The Camera Module control interface has got slave address 78h. General call address and
start byte are not supported.
Sub address
A sub address for internal register are prepared. Width of sub address is 8 bits, and each
address has 8 registers. The camera module has the function of increment addressing,
the host can operate continuous addresses by one sequence. After system reset by Power
ON (when VDD is applied) subaddress becomes 00’h.
Read & write
Nokia engine can read and write all registers’ data except for test registers.
Operating procedure
Mode description
This camera module supports following two operating modes.
1 Normal mode
This mode means continuous image capturing operation.
(Namely every frame is output.)
2 Long storage mode
This mode means intermittent image capture operation (one frame out of every
four frame) particularly in case of long time exposure. Nokia engine submits a
command to set this mode.
Operation flow chart
(1) For Power-on, the following order is necessary.
VDDI(1.8 V) power ON Extclk ON Vctrl ON VDD(2.8 V) Power ON
T1 T2 T3 T4
Command for initializing Image data output start.
T5
In the figure below, “VD” is internal synchronization pulse to show vertical scanning
period.