M64285FP データシートの表示（PDF） - MITSUBISHI ELECTRIC

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M64285FP

CMOS Image Sensor (Image inputting systems for gaming devices, Toys, PC interface systems)

MITSUBISHI ELECTRIC  

Technical Data Sheet

MITSUBISHI

PRELIMINARY

MITSUBISHI CMOS Image Sensor

M64285FP

11. Description of Functions

11.1. State Diagram

Set STOP=1

Standby

• Register setting

• Reset State

Assert START

(MD3=0)

Image output over

Assert START

(MD3=1)

Assert START

Continuous Mode

image capture

& output

Snapshot Mode

image capture

& output

The state diagram of M64285FP is shown above. The sequence to control M64285FP is

explained below.

(1) Reset all the registers and counters.

RESET is set to "L" (asynchronous to CLK). Reset state is in the Standby state.

(2) Set the contents of the registers.

There are 16 sets of registers, consisting of 4 bits each. The input data is composed of 8

bits. The leading 4 bits are for address and the following 4 bits are for data. The input

data is latched at the rising edge of SCLK. When LOAD goes "H", the contents of the

register become fixed at the rising edge of CLK.

(3) Start image capture.

After the contents of all the registers are fixed, START is asserted in synchronous with

the rising edge of CLK. Then the control counters are reset to the initial value specified

by the registers, and the image capture sequence starts. After the accumulation time

defined by the registers 4 ~ 7, the analog image signals are outputted serially. The STRB

pulse is outputted in synchronous with the above. The number of active data on one

frame is 1024 for the 2D image, 64 for the projection image, and 1 for the pixel average

data; the number of data outputted in each modes is fixed by the combination of the

above. When this chip finishes outputting the defined number of data, in the snapshot

modes (MD3=1), it automatically falls into the Standby state. In the continuous modes

(MD3=0), once the image capture sequence starts, this chip carries on outputting the

image data, unless START is asserted again or STOP bit is set to "H" to force the chip

into the Standby state.

The contents of the registers can be changed in the Standby state. When START is asserted

in the standby state or in the continuous image capture sequence, the control counters are,

again, reset to the initial value specified by the registers, and the image capture sequence

starts. If the register contents are changed before asserting START, M64285FP outputs the

data in a different mode. In the continuous output modes, register No. 2 including the STOP

bit is the only register that is allowed to be set.

( 7 / 26 )

Specifications and information herein are subject to change without notice.

02 / 05 / 01

Ver. 2.2E_01

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