pef20320 Infineon Technologies Corporation, pef20320 Datasheet - Page 87

• Manufacturer Part Number: pef20320
• Description: Multichannel Network Interface Controller For Hdlc With 32 Channels
• Manufacturer: Infineon Technologies Corporation

Figure 46
Note: 1. After Receive Initialization is detected all data are ignored until a flag is
User’s Manual
2 Flags with shared 0
2. After MFL + 1 data bytes are received the further data are ignored (except for
3. Even the abort sequence at the end of the frame will not lead to the RA bit in
4. Data are formatted according to §2.8 of CCITT Q.921.
5. The FCS is formatted as ordinary data!!!
0111 1110 111 1110
01111110
1
1111110101000110011100111010 0111
DATA Ignored up to next Flag
FLAG
received. The receiver is in the interframe time-fill state ‘0’.
a change of the interframe time-fill state) and are neither stored in the RB nor
reported to the shared memory. The receiver waits for the next flag.
the descriptor to be set.
31
DATA 4
FCS 4
000C0000
C0050000
5 Desc
th
0101 0101
0101
DATA 4
DATA
0
8
0101
31
AA 7B A5 01
E4
6
Generate FI-Int.
8800103D
Generate IFC-Int.
(2 Flags)
8800083D
Generate short
Frame
Interrupt for FCS 5
8800143D
XX
1101 1110
0000
1101 1110 1010 0101 1000 0000 0010 0111
XX
XX
0000
31
0
C0050200
00140000
6 Desc
th
1010 0101 1000 0000 0010 0111
0000
RA
7
5
10
0
9
0000
1111
31
FCS 4
FCS
FCS 6
AA
E4 XX XX XX
15
Generate FI, ERR-Int.
8800123D
Generate IFC-Int.
(15 1)
8800083D
0000
87
7B
Generate Short Frame Interrupts
8800163D
8800163D
5
*
x "1"
1111 1111
A5
0000
01
0
0000
01110
ITD04574
11
0000
011111100011111101111111
Abort Sequence
01111110
01111111
Functional Description
FLAG
PEB 20320
12
01.2000