PEB 20571 F V3.1 Infineon Technologies, PEB 20571 F V3.1 Datasheet - Page 115
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PEB 20571 F V3.1
Manufacturer Part Number
PEB 20571 F V3.1
Description
IC LINE CARD CTRLR DSP TQFP-100
Manufacturer
Infineon Technologies
Datasheet
1.PEB_20570_F_V3.1.pdf
(308 pages)
Specifications of PEB 20571 F V3.1
Function
PBX Controller with DSP
Interface
ISDN
Voltage - Supply
3.13 V ~ 3.47 V
Current - Supply
272.6mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
100-LFQFP
Includes
Layer-1 Control, Signaling Control, Signal Processing, Voice Channel Handling
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
Number Of Circuits
-
Other names
PEB20571FV3.1X
PEB20571FV31XP
SP000007539
PEB20571FV31XP
SP000007539
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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
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