ADNS-3060 查看數據表（PDF） - HP => Agilent Technologies

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产品描述 (功能)

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ADNS-3060

High-performance Optical Mouse Sensor

HP => Agilent Technologies 

Frame Capture

This is a fast way to download

a full array of pixel values

from a single frame. This

mode disables navigation and

overwrites any downloaded

firmware. A hardware reset is

required to restore navigation,

and the firmware must be

reloaded afterwards if

required.

To trigger the capture, write to

the Frame_Capture register.

The next available complete 1

2/3 frames (1536 values) will

be stored to memory. The data

are is retrieved by reading the

Pixel_Burst register once using

the normal read method, after

NCS

which the remaining bytes are

clocked out by driving SCLK at

the normal rate. The byte time

must be at least tLOAD. If the

Pixel_ Burst register is read

before the data is ready, it will

return all zeros.

To read a single frame, read a

total of 900 bytes. The next

636 bytes will be

approximately 2/3 of the next

frame. The first pixel of the

first frame (1st read) has bit 6

set to 1 as a start-of-frame

marker. The first pixel of the

second partial frame (901st

read) will also have bit 6 set

to 1. All other bytes have bit 6

set to zero. The MSB of all

bytes is set to 1. If the

Pixel_Burst register is read

past the end of the data (1537

reads and on) , the data

returned will be zeros.

After the download is

complete, the micro-controller

must raise the NCS line for at

least tBEXIT to terminate burst

mode. The read may be

aborted at any time by raising

NCS.

Alternatively, the frame data

can also be read one byte at a

time from the Frame_Capture

register. See the register

description for more

information.

exit burst mode

tBEXIT ≥4µs

MOSI

SCLK

MISO

frame capture reg write

address data

tNCS-SCLK

>120ns

pixel dump reg read

address

enter burst

mode

soonest to begin again

frame capture reg

address

≥10µs

tCAPTURE

tSRAD ≥50µs

tLOAD

≥10µs

P0

tLOAD

≥10µs

P1

P899

P0 bit 6 set to 1

all MSB = 1

see note 2

Notes:

1. MSB = 1 for all bytes. Bit 6 = 0 for all bytes except pixel 0 of both frames which has bit 6 = 1 for use as a frame marker.

2. Reading beyond pixel 899 will return the first pixel of the second partial frame.

3. tCAPTURE = 10µs + 3 frame periods.

4. This figure illustrates reading a single complete frame of 900 pixels. An additional 636 pixels from the next frame are available.

Figure 24. Frame capture burst mode timing

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