ADNS-3050 Avago Technologies US Inc., ADNS-3050 Datasheet - Page 24

• Manufacturer Part Number: ADNS-3050
• Description: Optical Sensors - Board Mount Optical Nav Sensor
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-3050

• Lead Free Status / Rohs Status: Details

24
REST2_DOWNSHIFT
Access: Read/Write
Data Type: Eight bit number
USAGE:
REST3_PERIOD
Access: Read/Write
Data Type: Eight bit number.
USAGE:
PREFLASH_RUN
Access: Read/Write
Data Type: Bit field
USAGE:
Bit
7
6:0
Field R2D7
Field R3P7
This register sets the Rest1 to Rest2 mode downshift time. Min value for this register is 0.
Rest 2 Downshift Time = (Register value (decimal) x (Rest2 period) x 128
This register sets the Rest3 period in seconds. Min value for this register is 0. Max value is 0xFD.
Rest 3 Period = (Register Value (decimal) +1) x 0.007
NOTE: Writing into this register when the sensor itself is operating in this rest mode may result in unexpected
behavior of the sensor. To avoid this from happening, below commands should be incorporated prior and
after the write command into this register.
i. Write 0x80 to register 0x22H prior to writing into this register
ii. Writing the desired value to this REST3_PERIOD register
iii. Write 0x00 to register 0x22H after to writing into this register
This register usage is to turn on LED to saturate sensor array before electronic shutter is open.
Field
Bit 7
Bit 7
Bit 7
Field Name
PREFLASH_CTRL
PREFLASH_T
PREFLASH_
CTRL
Address: 0x12
Reset Value: 0x2f
Address: 0x13
Reset Value: 0x31
Address: 0x14
Reset Value: 0x80
6
R2D6
6
R3P6
6
PREFLASH_T
Description
0: Prefl ash control during idle state.
1: Prefl ash control during processing state.
PREFLASH_T
PREFLASH_CTRL=1: Prefl ash time = Processing time -
PREFLASH_T*32*clk_period + Idle time
PREFLASH_CTRL=0: Prefl ash time =
PREFLASH_T*64*clk_period
5
R2D5
5
R3P5
5
PREFLASH_T
4
R2D4
4
R3P4
4
PREFLASH_T
3
R2D3
3
R3P3
3
PREFLASH_T
2
R2D2
2
R3P2
2
PREFLASH_T
1
R2D1
1
R3P1
1
PREFLASH_T
0
R2D0
0
R3P0
0
PREFLASH_T