ADNS-9500 Avago Technologies US Inc., ADNS-9500 Datasheet - Page 35

• Manufacturer Part Number: ADNS-9500
• Description: Ultimate Gaming Laser Sensor
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-9500

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

Frame_Period_Min_Bound_Lower
Access: R/W
Frame_Period_Min_Bound_Upper
Access: R/W
Data Type: 16-bit unsigned integer.
USAGE: This value sets the minimum frame period (the MAXIMUM frame rate) which may be selected by the automatic
35
Bit
Field
Bit
Field
frame rate control. Units are clock cycles of the internal oscillator (nominally 47MHz). The minimum allowed
write value is 0fa0, the maximum is 61a8. The Frame Rate formula is
To read from the registers, read Upper first followed by Lower. To write to the registers, write Lower first, followed
by Upper, then write anything to the Frame_Period_Max_Bound Lower and Upper registers to activate the new
setting. A good practice is to read the content of the Frame_Period_Max_Bound registers and write it back.
Reading this register will return the most recent value that was written to it. However, the value will take effect
only after a write to the Frame_Period_Max_Bound_Upper and Lower registers. After writing to Frame_Period_
Max_Bound_Upper, wait at least two frame times before writing to Frame_Period_Min_Bound_Upper or Lower
again. Refer to Frame_Period_Max_Bound register USAGE for details.
In addition, the three bound registers must also follow this rule when set to non-default values:
Frame Rate (Frames/second, fps) = Clock Rate / Register Value
Frame_Period_Max_Bound ≥ Frame_Period_Min_Bound + Shutter_Max_Bound.
7
FBm
7
FBm
7
15
6
FBm
6
FBm
6
14
Address: 0x1C
Reset Value: 0xa0
Address: 0x1D
Reset Value: 0x0f
5
FBm
5
FBm
5
13
4
FBm
4
FBm
4
12
3
FBm
3
FBm
3
11
2
FBm
2
FBm
2
10
1
FBm
1
FBm
1
9
0
FBm
0
FBm
0
8