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WM8281ECS/R Scheda tecnica(PDF) 172 Page - Cirrus Logic |
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WM8281ECS/R Scheda tecnica(HTML) 172 Page - Cirrus Logic |
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172 / 392 page ![]() 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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