peb20525 Infineon Technologies Corporation, peb20525 Datasheet - Page 225

• Manufacturer Part Number: peb20525
• Description: 2 Channel Serial Optimized Communication Controller For Hdlc/ppp
• Manufacturer: Infineon Technologies Corporation

Figure 59
Data Sheet
Packet 1, Fragment 1:
Packet 1, Fragment 2:
Packet 2, Fragment 1:
(se t m ax. re ceive bu ffe r s ize to 1 28 bytes
Fragmented Reception Sequence (Example)
(pre pa re extern al D M A controlle r
w ith rece ive b uffer sta rt a dd re ss)
w ith re ceive b uffe r s tart a ddress )
w ith re ceive b uffe r s tart a ddress )
(p re pa re exte rn al D M A co ntrolle r
(p re pa re exte rn al D M A co ntrolle r
CPU / MEMORY
D M A tra nsfe r of 1 28
an d issue 'R E ' com m a nd )
D M A tran sfer of 71
rece ive data b yte s
rece ive data b yte s
(iss ue 'R M C ' com m a nd )
(issu e 'R E ' c om m a nd )
(re ad R B C register)
R D T E interrup t
R B F interrup t
225
...
3 2
3 2
3 2
3 2
3 2
3 2
7
R M B S
R F IF O
R F IF O
R F IF O
R F IF O
R M B S
R F IF O
R F IF O
R F IF O
R B C
C M D R
SEROCCO-H
Programming
PEB 20525
PEF 20525
2000-09-14