WM8351CGEB/RV WOLFSON [Wolfson Microelectronics plc], WM8351CGEB/RV Datasheet - Page 40

• Manufacturer Part Number: WM8351CGEB/RV
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

WM8351
Figure 24 Control Interface 2-wire Register Read
Figure 25 Single Register Write to Specified Address
Figure 26 Single Register Read from Specified Address
Figure 27 Multiple Register Write to Specified Address using Auto-increment
w
S
MSByte Data N-2
Device ID
A
RW
(0)
A
MSByte Data N-1
The sequence of signals associated with a single register read operation is illustrated in Figure 24.
The Control Interface also supports other register operations, as listed above. The interface protocol
for these operations is summarised below. The terminology used in the following figures is detailed in
Table 2.
Table 2 Control Interface Terminology
Register Address
Written to 'Register Address+N-1'
TERMINOLOGY
[White field]
[Grey field]
R/W
Sr
S
A
P
A
A
LSByte Data N-1
MSByte Data 0
Written to 'Register Address'
ReadNotWrite
A
Data flow from bus master to WM8351
Data flow from WM8351 to bus master
A
MSByte Data N
Written to 'Register Address+N'
LSByte Data 0
Start Condition
DESCRIPTION
Repeated start
Stop Condition
Acknowledge
A
A
LSByte Data N
0 = Write
1 = Read
MSByte Data 1
PD, April 2012, Rev 4.5
A
P
Production Data
40