ADNS-2220 Avago Technologies US Inc., ADNS-2220 Datasheet - Page 31

• Manufacturer Part Number: ADNS-2220
• Description: SOLID STATE OPTICAL MOUSE LENS
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-2220

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q2072083A

Frame_Period_Lower
Access: Read
Frame_Period_Upper
Access: Read
Data Type: Sixteen bit unsigned integer.
USAGE: Read these registers to determine the current frame period and to calculate the frame rate. Units are clock
cycles. The formula is
Frame Rate = Clock Frequency/Register value
To read from the registers, read Frame_Period_Upper first followed by Frame_Period Lower.
To set the frame rate manually, disable automatic frame rate mode via the Extended_Config register and write the
desired count value to the Frame_Period_Maximum_Bound registers.
The following table lists some Frame_Period values for popular frame rates with a 24MHz clock.
Motion_Clear
Access: Write
Data Type: Any.
USAGE: Writing any value to this register will cause the Delta_X, Delta_Y, and internal motion registers to be cleared.
Use this as a fast way to reset the motion counters to zero without resetting the entire chip.
31
Field
Field
Bit
Bit
Frames/second
6469
5000
3000
2000
1500
500
FP
FP
7
7
15
7
Decimal
12,000
16,000
48,000
3,710
4,800
8,000
FP
FP
6
6
6
14
Counts
OE7E
12C0
1F40
3E80
BB80
2EE0
Hex
FP
FP
5
5
Address: 0x10
Reset Value: Undefined
5
Address: 0x11
Reset Value: Undefined
Address: 0x12
Reset Value: Undefined
13
Upper
OE
BB
12
1F
2E
3E
FP
FP
4
Frame_Period
4
4
12
Lower
FP
7E
C0
40
E0
80
80
3
FP
3
3
11
FP
FP
2
2
2
10
FP
FP
1
1
1
9
FP
FP
0
0
0
8