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WM9093ECS/R Datasheet(PDF) 38 Page - Wolfson Microelectronics plc

Part # WM9093ECS/R
Description  Ultra Low Power Audio Subsystem
PDF  84 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9093ECS/R Datasheet(HTML) 38 Page - Wolfson Microelectronics plc

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WM9093
Production Data
w
PD, March 2012, Rev 4.2
38
The sequence of signals associated with a single register write operation is illustrated in Figure 7.
Figure 7 Control Interface Register Write
The sequence of signals associated with a single register read operation is illustrated in Figure 8.
Figure 8 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 18.
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 WM9093
register map faster than is possible with single register operations.
TERMINOLOGY
DESCRIPTION
S
Start Condition
Sr
Repeated start
A
Acknowledge (SDA Low)
A
¯¯
Not Acknowledge (SDA High)
P
Stop Condition
R/W
¯¯
ReadNotWrite
0 = Write
1 = Read
[White field]
Data flow from bus master to WM9093
[Grey field]
Data flow from WM9093 to bus master
Table 18 Control Interface Terminology



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