peb20525 Infineon Technologies Corporation, peb20525 Datasheet - Page 61

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

The following figures provide a more detailed description of the TSA internal counter
operation and exceptional cases:
Figure 23
Data Sheet
clock mode 5a
bit TSCM='0' (continuous mode)
E x c ep tio ns :
a ) F S C p u ls e p erio d > 1 02 4 :
b ) F S C p u ls e p erio d < (T S de la y + T S w id th ), i.e. F S C p u ls e de te cte d w hile du ratio n c o un te r s till a c tiv e :
RxCLK,
lo ad o ffs e t
TxCLK
T h e o ffse t c ou n te r oc n t w ill a uto m a ic ally re s tart afte r 1 02 4 clo c k c y c les
F S C
T h e o ffse t c ou n te r oc n t w ill a uto m a ic ally re s tart,
F S C
T S d ela y = 1 + xT S N *8 + x C S
(1 ...1 0 2 4)
a n d w ill b e res ta rte d a g ain b y th e la te F S C p u ls e!
b u t du ra tio n c o un te r d cn t c on tinu e s o p e ra tio n (tran s m it/re c e ive in a c tive tim e slo ts )
o c n t := 1 02 4 - T S d e lay
FSC
oc n t:
M od e T E P C M /R E P C M = '0 '
M od e T E P C M /R E P C M = '1 '
s ta rt
o cn t
s ta rt
o cn t
Clock Mode 5a "Continuous Mode"
...
lo a d d u ra tion
T S d e la y + 10 2 4 c lo ck c yc le s
o cn t := 1 0 24
< 10 2 4 c lo ck c yc le s
d cn t := 0
d cn t := 0
d c n t:
o c nt := 0
s ta rt
dc n t
61
d c n t := T S w id th - 1
re s tart
o c nt
tim e s lot
ac tiv e
dc n t := 2 5 5
re sta rt
oc n t
ac tiv e
tim e slo ts a c c ordin g
P C M T X /P C M R X
N < T S de la y
lo ad o ffs e t
o c nt := N ,
re s tart
o cn t:
oc n t
Functional Overview
oc n t := 1 02 4 - T S d e lay
PEB 20525
PEF 20525
2000-09-14