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WM8993 Datasheet(PDF) 138 Page - Wolfson Microelectronics plc

Part # WM8993
Description  Audio Hub CODEC for Multimedia Phones
PDF  229 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8993 Datasheet(HTML) 138 Page - Wolfson Microelectronics plc

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WM8993
Production Data
w
PD, November 2010, Rev 4.0
138
The sequence of signals associated with a single register write operation is illustrated in Figure 61.
Figure 61 Control Interface Register Write
The sequence of signals associated with a single register read operation is illustrated in Figure 62.
Figure 62 Control Interface Register Read
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 92.
Note that multiple write and multiple read operations are supported using the auto-increment mode.
This feature enables the host processor to access sequential blocks of the data in the WM8993
register map faster than is possible with single register operations.
TERMINOLOGY
DESCRIPTION
S
Start Condition
Sr
Repeated start
A
Acknowledge (SDAT Low)
A
¯ ¯
Not Acknowledge (SDAT High)
P
Stop Condition
R/W
ReadNotWrite
0 = Write
1 = Read
[White field]
Data flow from bus master to WM8993
[Grey field]
Data flow from WM8993 to bus master
Table 92 Control Interface Terminology



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