ADNS-7550 Avago Technologies US Inc., ADNS-7550 Datasheet - Page 30

• Manufacturer Part Number: ADNS-7550
• Description: Optical Mouse Sensor,DIP
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-7550

• Mounting Style: Through Hole
• Termination Style: Solder Pin
• Supply Voltage: 5 V
• Operating Temperature Range: 0 C to + 40 C
• Product: Optical
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 516-2180; ADNS-7550

30
Pixel_Grab
Access: Read/Write
Data Type: 8 Bit Word
USAGE: For test purposes, the sensor will read out the contents of the pixel array, one pixel per frame. To start a pixel
grab, write anything to this register to reset the pointer to pixel 0,0. Then read the PIXRDY bit in the Motion register.
When the PIXRDY bit is set, there is valid data in this register to read out. After the data in this register is read, the
pointer will automatically increment to the next pixel. Reading may continue indefinitely; once a complete frame’s
worth of pixels has been read, PIXFIRST will be set to high to indicate the start of the first pixel and the address pointer
will start at the beginning location again.
Figure 26. Pixel Address Map (sensor looking on the navigation surface through the lens)
Field
Bit
PD
7
7
PD
6
6
Address: 0x35
Reset Value: 0x00
PD
5
5
PD
4
4
PD
3
3
PD
2
2
O
P
S
T
V
E
Y
I
I
PD
Top X-ray View of Mouse
1
LB
1
POSITIVE X
XYYWWZ
A7550
PD
0
RB
0