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PEB 20542
PEF 20542
Introduction
Data Sheet
20
2000-09-14
–
CRC generation and checking (CRC-CCITT or CRC-32)
–
Transparent CRC option per channel and/or per frame
–
Programmable Preamble (8 bit) with selectable repetition rate
–
Error detection (abort, long frame, CRC error, short frames)
Bit Synchronous PPP Mode
–
Bit oriented transmission of HDLC frame (flag, data, CRC, flag)
–
Zero bit insertion/deletion
–
15 consecutive
’
1
’
bits abort sequence
Octet Synchronous PPP Mode
–
Octet oriented transmission of HDLC frame (flag, data, CRC, flag)
–
Programmable character map of 32 hard-wired characters (00
H
-1F
H
)
–
Four programmable characters for additional mapping
–
Insertion/deletion of control-escape character (7D
H
) for mapped characters
Asynchronous PPP Mode
–
Character oriented transmission of HDLC frame (flag, data, CRC, flag)
–
Start/stop bit framing of single character
–
Programmable character map of 32 hard-wired characters (00
H
-1F
H
)
–
Four programmable characters for additional mapping
–
Insertion/deletion of control-escape character (7D
H
) for mapped characters
Asynchronous (ASYNC) Protocol Mode
–
Selectable character length (5 to 8 bits)
–
Even, odd, forced or no parity generation/checking
–
1 or 2 stop bits
–
Break detection/generation
–
In-band flow control by XON/XOFF
–
Immediate character insertion
–
Termination character detection for end of block identification
–
Time out detection
–
Error detection (parity error, framing error)
BISYNC Protocol Mode
–
Programmable 6/8 bit SYN pattern (MONOSYNC)
–
Programmable 12/16 bit SYN pattern (BISYNC)
–
Selectable character length (5 to 8 bits)
–
Even, odd, forced or no parity generation/checking
–
Generation of interframe-time fill
’
1
’
s or SYN characters
–
CRC generation (CRC-16 or CRC-CCITT)
–
Transparent CRC option per channel and/or per frame
–
Programmable Preamble (8 bit) with selectable repetition rate
–
Termination character detection for end of block identification
–
Error detection (parity error, framing error)
Extended Transparent Mode
–
Fully bit transparent (no framing, no bit manipulation)
–
Octet-aligned transmission and reception