pef20320 Infineon Technologies Corporation, pef20320 Datasheet - Page 50

• Manufacturer Part Number: pef20320
• Description: Multichannel Network Interface Controller For Hdlc With 32 Channels
• Manufacturer: Infineon Technologies Corporation

User’s Manual
For example:
a) 2.048-Mbit/s PCM highway
b) 1
c) 6
The choice of the individual buffer size of each data channel can be made in the channel
specification (shared memory). The buffer size of one channel is changeable without
disturbing the transmission of the other channels.
Figure 26
Partitioning of TB
32
of the buffer are allocated to each data channel.
The maximum buffer size for one channel (63 long words) is allocated to this data
channel.
Eight long words of the buffer are allocated to each of the 6 data channels with
256 Kbit/s and two long words are assigned to each of the 8 data channels with a
transmission rate of 64 Kbit/s.
2.048-Kbit/s data channel
256-Kbit/s and 8
64-Kbit/s data channels (8 bits are sent with each PCM frame). Two long words
Active Transmit
Channel (internal)
64 Kbit/s data channels.
Unused
TF
TB
Used as Address Offset for TB
ITBS of Channel
ITBS of Channel
ITBS of Channel
ITBS of Channel
CD
50
X
X
X
X
1
0
2
3
64 Long Words
Functional Description
ITD04396
PEB 20320
01.2000