peb20525 Infineon Technologies Corporation, peb20525 Datasheet - Page 223
peb20525
Manufacturer Part Number
peb20525
Description
2 Channel Serial Optimized Communication Controller For Hdlc/ppp
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB20525.pdf
(252 pages)
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Figure 57
Figure 58
prepared receive buffers in memory. In this case the length of the received packet is 199
bytes, each of the buffers in host memory is 128 bytes deep:
Data Sheet
Packet 0:
Packet 1:
shows an example for fragmented reception of a packet larger than the
DMA Receive (Single Buffer per Packet)
(p re pare e xte rna l D M A co ntroller
w ith re ceive bu ffe r start ad dress)
(p rep are e xterna l D M A con tro ller
w ith receive bu ffer start ad dre ss)
CPU / MEMORY
(set m ax. receive bu ffer size
and issu e 'R E ' co m m a nd)
D M A transfer of all
(is sue 'R M C ' com m a nd )
re ceive da ta bytes
(re ad R B C register)
R D T E inte rrup t
223
...
...
SEROCCO-H
R M B S
R F IF O
R F IF O
R F IF O
R B C
C M D R
Programming
PEB 20525
PEF 20525
2000-09-14
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