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參數(shù)資料
| 型號(hào)： | ADNS-6130-001 |
| 廠商： | Avago Technologies Ltd. |
| 英文描述： | High Performance Laser Mouse Bundles |
| 中文描述： | 高性能激光鼠標(biāo)捆綁 |
| 文件頁數(shù)： | 19/52頁 |
| 文件大小： | 997K |
| 代理商： | ADNS-6130-001 |
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19
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.
To trigger the capture, write to the Frame_Capture reg-
ister. The next available complete 1 2/3 frames (1536
values) will be stored to memory. The data are retrieved
by reading the Pixel_Burst register once using the nor-
mal read method, after which the remaining bytes are
clocked out by driving SCLK at the normal rate. The byte
time must be at least t
LOAD
. 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 (1
st
read) has bit 6 set to
1 as a start-of-frame marker. The first pixel of the second
partial frame (901
st
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. Pixel data is in the lower six bits of each byte.
After the download is complete, the micro-controller
must raise the NCS line for at least t
BEXIT
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.
frame capture reg
address
NCS
address
data
address
MOSI
SCLK
P0
P1
P899
MISO
t
NCS-SCLK
>120ns
frame capture reg write
pixel dump reg read
exit burst mode
t
BEXIT
enter burst
mode
t
CAPTURE
t
LOAD
≥ 10
μ
s
soonest to begin again
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. t
CAPTURE
= 10 s + 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.
t
LOAD
≥ 10
μ
s
t
SRAD
≥ 4
μ
s
≥ 10
μ
s
≥ 50 μ
s
Figure 25. Frame capture burst mode timing
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| ADNS-3080 | High-Performance Optical Mouse Sensor |
| ADNS-3150-001 | Optical Mouse Designer’s Kit |
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