Difference between revisions of "APU"

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(→‎Global Processor (GP))
Line 8: Line 8:
  
 
* GPS = GP Scratch (?)
 
* GPS = GP Scratch (?)
−
* GPF = GP Frames (?)
+
* GPF = GP FIFO
  
 
== Encode Processor (EP) ==
 
== Encode Processor (EP) ==

Revision as of 21:35, 25 June 2017

The MCPX contains an APU (Audio Processing Unit).

  • SSL = Stream Segment List
  • SGE = Scatter Gather Entry
  • PRD = Physical Resource Descriptor (Same thing as SGE?!)

Global Processor (GP)

  • GPS = GP Scratch (?)
  • GPF = GP FIFO

Encode Processor (EP)

  • EPS = EP Scratch (?)
  • EPF = EP Frames (?)

Voice Processor (VP)

  • VPV = VP Voices
  • VPSGE = VP SGEs
  • VPSSL = VP SSLs

Voice lists

  • 2D
  • 3D
  • MP

Voice structure

This is 0x80 bytes

Pitch calculation

p = 4096 * log2(f / 48000)
f = pow2(p / 4096) * 48000

Related

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