PEF20525 INFINEON [Infineon Technologies AG], PEF20525 Datasheet - Page 100

• Manufacturer Part Number: PEF20525
• Description: 2 Channel Serial Optimized Communication Controller for HDLC/PPP
• Manufacturer: INFINEON [Infineon Technologies AG]

Examples
The interaction between SCC and the host during transmission and reception of I-frames
is illustrated in the following two figures. The flow control with RR/RNR of I-frames during
transmission/reception is illustrated in
and protocol errors are shown in
Figure 49
Figure 50
Data Sheet
ALLS
RME
ALLS
RME
WFA
WFA
RME
RR
RNR
XRNR
Transmission/Reception of I-Frames and Flow Control
Flow Control: Reception of S-Commands and Protocol Errors
I
I (0.1)
I
I
RR(1)
RR(1)
RR(2)
(0.0)
(1.1)
(1.2)
RR(0)p=1
RR(0)p=1
I (0.0)
RNR(0)
I
RR(1)
RR(0)f=1
RR(0)f=1
(0.0)
WFA = Wait For Acknowledge (see Status Register)
Transmit
Transmit
Confirm
Reception
WFA = Wait For Acknowledge (see Status Register)
Figure
with
I
I
I
Frame
Frame
Frame
I Frame
Figure
50.
100
49. Both, the sequence of the poll cycle
ALLS
ALLS
PCE
TIN
RSC (RNR)
XMR
ALLS
RSC (RR)
WFA
WFA
Detailed Protocol Description
WFA
t1
t1
t1
t1
t1
RR(0)
Protocol Error
RNR(0)f=1
RR(1)
RR(2)
RNR(0)
RR(0)f=1
Poll Cycle
I
RR(0)p=1
RR(0)p=1
RRp=1
RRp=1
(0.0)
I (0.0)
RR(0)p=1
PEB 20525
PEF 20525
2000-09-14
RNR