wm8351 Wolfson Microelectronics plc, wm8351 Datasheet - Page 40

• Manufacturer Part Number: wm8351
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: 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
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
TERMINOLOGY
[White field]
[Grey field]
R/W
Sr
S
A
P
ReadNotWrite
Data flow from bus master to WM8351
Data flow from WM8351 to bus master
Start Condition
DESCRIPTION
Repeated start
Stop Condition
Acknowledge
0 = Write
1 = Read
PD, June 2009, Rev 4.1
Production Data
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