ADNS-2030 Avago Technologies US Inc., ADNS-2030 Datasheet - Page 32

• Manufacturer Part Number: ADNS-2030
• Description: Optical Mouse Sensor,DIP
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-2030

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The maximum value of the shutter is depen-
dent upon the frame rate and clock frequen-
cy. The formula for the maximum shutter value is:
Max shutter value =
Frames/second
2300*
2000*
1500
1000
500
* Note: To optimize tracking performance on dark surfaces, it is recommended that an adaptive frame rate based on
Frame_Period_Lower
Access: Read/Write
Frame_Period_Upper
Access: Read/Write
Data Type: Sixteen bit 2’s complement word.
USAGE: Sets the frame rate. The frame period counter counts up until it overflows. Units are clock cycles.
The formula is: =
(2’s complements hex)
For an 18 MHz clock, below are the Frame_period val-
ues for popular frame rates.

shutter value be implemented for frame rates greater than 1500.
Field
Field
Bit
Bit
clock freq
frame rate
FP
FP
7
7
15
7
clock freq
frame rate
Max Shutter
Decimal
5010
6184
9184
15184
33184
= counts
FP
FP
6
6
– 2816
14
6
Address: 0x10
Reset Value: 0x20
Address: 0x11
Reset Value: 0xd1
Hex
0x1392
0x1828
0x23E0
0x3B50
0x81A0
FP
FP
5
5
13
5
FP
FP
4
4
12
4
For a clock frequency of 18 MHz, the following table
shows the maximum shutter value. 1 clock cycle is 55.56
nsec.
Shutter
Upper
13
18
23
3B
81
FP
FP
3
3
11
3
Lower
92
28
E0
50
A0
FP
FP
2
2
10
2
FP
FP
<-- Default Max Shutter
1
1
1
9
FP
FP
0
0
0
8