peb20532 Infineon Technologies Corporation, peb20532 Datasheet - Page 94

• Manufacturer Part Number: peb20532
• Description: 2 Channel Serial Optimized Communication Controller
• Manufacturer: Infineon Technologies Corporation

Figure 45
Data Sheet
data in
transmit
FIFO:
HDLC
framing:
PPP
mapping:
serial
line
received
character:
PPP
unmapping
:
data in
receive
FIFO:
Note: CRC generation/checking is assumed to be disabled in this example; according the PPP mapping/
unmapping, CRC characters are treated as 'data' characters being mapped/unmapped if necessary .
ACCM0..3: Async Control Character Map Register
7
1F
UDAC0..3: User Defined Async Control Character Map Register
7
0
1E
0
PPP Mapping/Unmapping Example
ACCM3
UDAC3
7E
7E
7Eh
H
H
...
...
7E
7E
H
H
13
13
7D
7D
0
0
H
H
7
7
H
H
33
33
13
13
15
H
H
H
H
0
ACCM2
UDAC2
14
20
20
7D
7D
0
7Eh
13
H
H
3
1
H
H
12
00
00
20
20
0
11
H
H
H
H
0
94
01
01
01
0
0
H
H
H
7
7
01
01
01
H
H
H
ACCM1
UDAC1
02
02
02
7Eh
...
H
H
H
...
Detailed Protocol Description
02
02
02
H
H
H
7E
7E
0
0
7
7
H
H
7E
7E
H
H
ACCM0
UDAC0
20h
PEB 20532
PEF 20532
2000-09-14
00
0
0
0