STV-366-R01 STMICROELECTRONICS [STMicroelectronics], STV-366-R01 Datasheet - Page 12

• Manufacturer Part Number: STV-366-R01
• Description: 1.8V optical mouse sensor
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Operation
5
5.1
5.2
5.2.1
Table 3.
5.2.2
Note:
Table 4.
12/30
0x00
0x01
Add
Index (hex)
0x20
0x21
0x22
0x2F
Bits
[7:0]
[3:0]
Operation
The VT5366 provides X and Y motion information to an external processor, communication
takes place over a standard I2C bus.
I2C communication
The VT5366 is a standard I2C slave device. The 7-bit device address is 0x10, making the
I2C address 0x20 for writing and 0x21 for reading (the LSB is the read/write bit). The
maximum I2C clock speed is 400kHz. Full details of the I2C interface are given in
Register map
The VT5366 register space allows for up to 255 registers to be addressed. The sensor
address (ID) is 0x20.
Read motion
The key registers that are required are listed below.
Key register
Customer access
The rest of the customer accessible registers are listed below.
Please DO NOT write to any Addresses not mentioned below as this will affect the chip’s
performance.
Reg [#0x00 - 0x01] Device revisions
[1] automatic motion reset
[7:0] X-motion
[7:0] Y-motion
[7:0] Minimum motion search vector Change sensitivity when going into non-run mode
Device Hardware revision
Device Firmware revision
Function
Name
R/W
R/W
RO
set bit [1] to enable automatic reset of motion registers
2’s complement format
2’s complement format
Default
1
0
Note
Description
Chapter 6
VT5366
.