pef20320 Infineon Technologies Corporation, pef20320 Datasheet - Page 197

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

5.2.4
Some considerations about the performance are made by investigating the maximum
data rate. Further investigations are made about the bus occupancy by all busmasters
and the MUNICH32 poll access’ influence on the data rate. Finally the processing of one
frame is illustrated.
Data Rates
The data rate during transmission from the ISDN into the Ethernet was tested.
Figure 95
Data Rate
The size of one data buffer is 128 Byte. If the number of channels exceeds 24 the data
rate depends on the MUNICH32 transmitter. If the transmitter is initialized the data rate
decreases. This shows the influence of the MUNICH32 polling the Hold bit.
User’s Manual
Performance Considerations
kbit/s
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
3
6
9
12
15
197
18
21
Data Rate available
Data Rate without
MUNICH32 polling
Data Rate with MUNICH32
polling
24
27
30
Application Notes
Channels
ITD08293
PEB 20320
01.2000