ADNS-7700 Datasheet, PDF (42/60 Pages) AVAGO TECHNOLOGIES LIMITED – One chip USB LaserStream Mouse Sensors Single 5.0 volts power supply

SHUT_HI
Access: Read Oly
Bit
7
Field
S₁₅
Address: 0x9
Reset Value: 0x00
6
5
4
3
S₁₄
S₁₃
S₁₂
S₁₁
Type: Device
2
1
0
S₁₀
S₉
S₈
SHUT_LO
Access: Read Only
Address: 0x0A
Reset Value: Undefined
Type: Device
Bit
7
6
5
4
3
2
1
0
Field
S₇
S₆
S₅
S₄
S₃
S₂
S₁
S₀
Data Type: 16-bit number.
USAGE: The combination of SHUT_HI and SHUT_LO is a 16-bit number. This is the number of clocks the shutter was open
for the last image taken. The units are in main clocks ticks (nominally 24MHz). To avoid split read issues, read
SHUT_Hi first.
Shutter Value (White Paper)
Z = 2.4mm, Circle@7.5" diameter, Speed = 6ips
60
50
40
30
20
10
0
1 51 101 151 201 251 301 351 401 451 501 551 601 651 701 751
Count
Figure 25. Shutter Values (white paper)
Shutter vs Z (White Paper)
1000cpi, Circle@7.5" diameter, Speed = 6ips
300
250
200
150
100
50
0
1.6 1.8
2 2.2 2.4 2.6 2.8
3 3.2 3.4
Distance from Lens Reference Plane to Navigation Surface, Z (mm)
Figure 26. Mean Shutter vs. Z (white paper)
Avg-3sigma
Avg
Avg+3sigma
42