pef20320 Infineon Technologies Corporation, pef20320 Datasheet - Page 199

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

MUNICH32 Polling
The influence of the polling can be illustrated by showing the bus occupancy of
MUNICH32 poll accesses only.
Figure 97
Bus Occupancy During Polling
Here the MUNICH32 is polling 31 channels (= 31
Every access is 5 clock cycles long, instead of the minimum length of 4 clock cycles. The
time for the arbitration protocol needed during every access results in bus idle time.
User’s Manual
M32
17 %
CPU
73 %
199
Idle
10
%
ITD08295
2 read accesses during 125 s).
Application Notes
PEB 20320
01.2000