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WM8281ECS/R Scheda tecnica(PDF) 172 Page - Cirrus Logic

Il numero della parte WM8281ECS/R
Spiegazioni elettronici  Low Power Audio System with Ambient Noise Cancellation and Echo Cancellation
PDF  392 Pages
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Produttore elettronici  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8281ECS/R Scheda tecnica(HTML) 172 Page - Cirrus Logic

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WM8281
172
Rev 4.0
MESSAGE CODE
MC[6:0]
DESCRIPTION
GENERIC
FRAMER
INTERFACE
Reconfiguration Messages
0x40
BEGIN_RECONFIGURATION ()
D
D
D
0x44
NEXT_ACTIVE_FRAMER (LAIF, NCo, NCi)
D
0x45
NEXT_SUBFRAME_MODE (SM)
D
D
0x46
NEXT_CLOCK_GEAR (CG)
D
0x47
NEXT_ROOT_FREQUENCY (RF)
D
0x4A
NEXT_PAUSE_CLOCK (RT)
D
0x4B
NEXT_RESET_BUS ()
D
0x4C
NEXT_SHUTDOWN_BUS ()
D
0x50
NEXT_DEFINE_CHANNEL (CN, TP, SD, SL)
D
0x51
NEXT_DEFINE_CONTENT (CN, FL, PR, AF, DT, CL, DL)
D
0x54
NEXT_ACTIVATE_CHANNEL (CN)
D
0x55
NEXT_DEACTIVATE_CHANNEL (CN)
D
0x58
NEXT_REMOVE_CHANNEL (CN)
D
0x5F
RECONFIGURE_NOW ()
D
D
D
Value Management Messages
0x60
REQUEST_VALUE (TID, EC)
D
0x61
REQUEST_CHANGE_VALUE (TID, EC, VU)
0x64
REPLY_VALUE (TID, VS)
S
0x68
CHANGE_VALUE (EC, VU)
D
Table 50 SLIMbus Message Support
S = supported as a Source Device only. D = supported as a Destination Device only.
The WM8281 SLIMbus component must be reset prior to scheduling a Hardware Reset or Power-On
Reset. This can be achieved using the RESET_DEVICE message (issued to the WM8281 Interface
Device), or else using the NEXT_RESET_BUS message.
PARAMETER
CODE
DESCRIPTION
COMMENTS
AF
Auxiliary Bits Format
CG
Clock Gear
CL
Channel Link
CM
Clear Mask
WM8281 does not fully support this function.
The CM bytes of the REQUEST_CLEAR_INFORMATION or
CLEAR_INFORMATION messages must not be sent to WM8281
Devices. When either of these messages is received, all bits
within the specified Information Slice will be cleared.
CN
Channel Number
DC
Device Class
DCV
Device Class Variation
DL
Data Length
DT
Data Type
WM8281 supports the following DT codes:
0h - Not indicated
1h - LPCM audio
Note that 2’s complement PCM can be supported with DT=0h.
EC
Element Code
FL
Frequency Locked
IS
Information Slice
LA
Logical Address



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