VT5376 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
VT5376
STMicroelectronics
'VT5376' PDF : 31 Pages View PDF
Interface
Figure 5. Single read
No data write
S 20h
A
2Ah
VT5376
Read data
A Sr 21h A
16
AP
4.4.3
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 6. Multiple location write
Incremental write
S
20h
A
07h
A
11
A
C1
AP
data written
@ index = 07
data written
@ index = 08
4.4.4 Multiple location read: reading motion value example
Multiple locations can be read within a single read message. An auto-increment write is
assumed.
Note: 1 Registers are read until the master Nacks the data.
2 When reading 0x21/0x22 (X/Y motion data), a multiple read must be performed as both
registers are cleared after a each read.
Figure 7. Multiple location read: reading motion
No data write
Incremental read
S
20h
A
2Ah
A Sr
21h
A X scaling A Y scaling A P
12/31
Doc ID 13939 Rev 4
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