peb20560 Infineon Technologies Corporation, peb20560 Datasheet - Page 136

• Manufacturer Part Number: peb20560
• Description: Dsp Oriented Pbx Controller Doc
• Manufacturer: Infineon Technologies Corporation

Semiconductor Group
Figure 2-40 Accesses to the PEDIU RAM (circular buffer) at two Consecutive
Frames
Frame n + 1
from DMA
Frame n + 1
to DMA
Frame n
from DMA
Frame n
to DMA
DSP - OUT0 - 0
DSP - OUT1 - 0
DSP - OUT0 - 1
DSP - OUT1 - 1
DSP - OUT0 - 0
DSP - OUT1 - 0
DSP - OUT0 - 1
DSP - OUT1 - 1
DSP - IN0 - 0
DSP - IN1 - 0
DSP - IN0 - 1
DSP - IN1 - 1
DSP - IN0 - 0
DSP - IN1 - 0
DSP - IN0 - 1
DSP - IN1 - 1
Frame n + 1
Frame n
RAM
2-90
RAM
Functional Block Description
256 x 16-bit RAM as
8 x 32-word blocks
= 4 x IN + 4 x OUT
Frame n - 1
to DSP
Frame n + 1
from DSP
Frame n
to DSP
Frame n + 2
from DSP
ITD10093
ITD10094
PEB 20560
2003-08