STV-376-E01(2008) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STV-376-E01
(Rev.:2008)

Ultra-low power laser motion sensor for laser mouse applications

STMicroelectronics 

VT5376

Figure 6. Single read

No data write

S 20h

A

20h

A Sr 21h

Interface

Read data

A 15

AP

Note:

Note:

NAck

from the master

As mentioned in the previous example, the read message is terminated with a negative

acknowledge (A) from the master.

Multiple location write

It is possible to write data bytes to consecutive adjacent internal registers without having to

send explicit indexes prior to sending each data byte.

An auto-increment write is assumed if no stop condition occurs.

Figure 7. Multiple location write

Incremental write

S

20h

A

07h

A

11

A

C1

AP

data written

@ index = 07

data written

@ index = 08

Multiple location read: reading motion value example

Multiple locations can be read within a single read message. An auto-increment write is

assumed.

Registers are read until the master Nacks the data.

Figure 8. Multiple location read: reading motion

No data write

Incremental read

S

20h

A

21h A Sr 21h

A Xmotion A Ymotion A P

11/30

Share Link: