MT9T001 View Datasheet(PDF) - Micron Technology

Part Name

Description

View to exact match

MT9T001

3-MEGAPIXEL DIGITAL IMAGE SENSOR

Micron Technology 

PRELIMINARY

MT9T001

3-MEGAPIXEL DIGITAL IMAGE SENSOR

Electronic Panning

In addition to changing the window size, the user

has the flexibility to change the location of the readout

window. Reg0x01 controls the first row to be read out

and Reg0x02 controls the first column to be read out.

The default values are 0x0014 (decimal 20) for Reg0x01

and 0x0020 (decimal 32) for Reg0x02. Note that the first

column to be read out must be an even number.

Reg0x01 and Reg0x02, together with Reg0x03 and

Reg0x04, allow the user to choose any segment of the

imager array to be read out. This is especially benefi-

cial when the user needs to zoom in on a small portion

of the image and perform analysis on the image con-

tent.

Figure 9 shows some examples of the electronic

panning/zoom-in and windowing capabilities of the

sensor.

Blanking Control

Reg0x05 and Reg0x06 These registers control the

blanking time in a row (called column fill-in or hori-

zontal blanking) and between frames (vertical blank-

ing). Horizontal blanking is specified in terms of pixel

clocks. Vertical blanking is specified in terms of row

readout times. The actual imager timing can be calcu-

lated using the equations given in Table 3 on page 11.

Reg0x05 controls the horizontal blanking time in a

row. The value is specified in terms of pixel clocks.

Default value of 0x008E for Reg0x05 results in a hori-

zontal blanking time of 511 pixel clocks. Note that the

minimum value for Reg0x05 is 21. Thus, the minimum

horizontal blanking time is 390 pixel clocks.

Reg0x06 controls the vertical blanking time in a row.

The value is specified in terms of the number of rows.

Default value of 0x0019 for Reg0x06 results in a vertical

blanking time of 26-row time.

Frame Time

Reg0x03, Reg0x04, Reg0x05, and Reg0x06 Total frame

time in terms of pixel clocks can be obtained using the

formula given in Table 3 on page 11. The user can

change the number of columns and rows read out,

horizontal blanking and vertical blanking times to

obtain different frame rates.

High Frame Rate Readout Modes

Reg0x01, Reg0x02, Reg0x03, Reg0x04, Reg0x05, and

Reg0x06 In addition to having the flexibility to read

out smaller standard formats, the sensor gives the user

the option of reading out nonstandard formats. This is

particularly useful if the user needs to zoom in on a

particular segment of the image to perform high-

speed mathematical calculations (e.g., high-speed

viewfinder or auto-focus applications).

In applications such as the auto-focus mode, the

user may need more horizontal resolution than verti-

cal. Thus, the user can window down to the mid-sec-

tion of the imager array by programming Reg0x01 and

Reg0x03 to change the row start address and the win-

dow height. Figure 10 is an example of how the user

may want to window down to 2,048H x 512V from the

default of 2,048H x 1,536V. See also Table 9 for other

auto-focus mode resolutions.

Figure 9: Windowing Capabilities

(1200, 180)

B

(1327, 307)

(32, 20)

A

(568, 356)

C

(1079, 867)

(1007, 479)

(2048, 1536)

Window A

Window B

Window C

Window D

Window Size

2,048 x 1,536

128 x 128

512 x 512

400 x 96

Reg0x01

0x0014

0x00B4

0x0164

0x0390

Reg0x02

0x0020

0x04B0

0x0238

0x0050

(80, 912)

D

Reg0x03

0x05FF

0x007F

0x01FF

0x018F

Reg0x04

0x07FF

0x007F

0x01FF

0x005F

09005aef80c64010

MT9T001_3100_DS_2.fm - Rev. C 9/04 EN

20

Micron Technology, Inc., reserves the right to change products or specifications without notice.

©2003 Micron Technology, Inc. All rights reserved.

Share Link: