PEB20570FV31XP Lantiq, PEB20570FV31XP Datasheet - Page 115

• Manufacturer Part Number: PEB20570FV31XP
• Manufacturer: Lantiq

Specifications of PEB20570FV31XP

• Lead Free Status / Rohs Status: Compliant

4.3.2.4
Figure 34
The following description analyses the frame-wise circular-buffering scheme, on a frame
to frame basis.
Assume that during frame n, buffer-0 is used as I-buffer, while buffer-1 is used as D-
buffer. The IOMU stores the incoming frame-n time-slots in buffer-0 input-blocks and
drives outward the frame n time-slots which are read from buffer-0 output-blocks. At the
same time the DSP reads the time-slots that arrived during frame n-1 (the previous
frame) from buffer-1 input-blocks and prepares the time-slots to be driven outward in the
next frame, frame n+1, in buffer-1 output blocks.
Data Sheet
DU1
DU0
DD1
DD0
Circular Buffer Architecture
Serial
IOMU Frame-Wise Circular-Buffer Architecture
DELIC
Serial
IOMU
98
Parallel
Parallel
Functional Description
I-BUFFER
D-BUFFER
Frame-wise
Buffer
Swapping
every frame
DSP
out0
out1
out0
out1
in0
in0
in1
in1
PEB 20570
PEB 20571
Belongs
to the
IOMU
Belongs
to the
DSP
2003-07-31