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WM8994ECS/R 数据表(PDF) 215 Page - Cirrus Logic

部件名 WM8994ECS/R
功能描述  Multi-channel Audio Hub CODEC for Smartphones
PDF  363 Pages
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制造商  CIRRUS [Cirrus Logic]
网页  http://www.cirrus.com
标志 CIRRUS - Cirrus Logic

WM8994ECS/R 数据表(HTML) 215 Page - Cirrus Logic

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WM8994
Rev 4.6
215
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 WM8994
[Grey field]
Data flow from WM8994 to bus master
Table 120 Control Interface Terminology
Device ID
S
A
MSByte Address
(0)
A
MSByte Data
A
LSByte Data
A
P
8 bit Device ID
8 bits
8 bits
8 bits
LSByte Address
A
8 bits
RW
Figure 74 Single Register Write to Specified Address
Device ID
Sr
A
P
MSByte Data
(1)
LSByte Data
A
Device ID
S
A
MSByte Address
(0)
A
A
A
LSByte Address
RW
RW
Figure 75 Single Register Read from Specified Address
Device ID
S
A
MSByte Address
(0)
A
MSByte Data 0
A
LSByte Data 0
A
Written to 'Register Address'
A
MSByte Data N
A
LSByte Data N
A
P
Written to 'Register Address+N'
MSByte Data 1
MSByte Data N-2
A
MSByte Data N-1
A
LSByte Data N-1
Written to 'Register Address+N-1'
LSByte Address
A
RW
Figure 76 Multiple Register Write to Specified Address using Auto-increment
Sr
Device ID
S
A
MSByte Address
(0)
A
Device ID
A
(1)
Read from 'Register Address'
MSByte Data 0
LSByte Data 0
A
A
P
MSByte Data N
LSByte Data N
A
A
A
MSByte Data N-1
LSByte Data N-1
A
A
Read from 'Last Register Address+N'
Read from 'Last Register Address+N-1'
LSByte Address
A
RW
RW
Figure 77 Multiple Register Read from Specified Address using Auto-increment



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