SAB82538 Datasheet, PDF (196/253 Pages) Infineon Technologies AG – ICs for Communications

SYN Character Register Low, High (READ/WRITE)
Value after RESET: 00, 00_H
7
SYNL
SYNL
SYNH
SYNH
SAB 82538
SAF 82538
BISYNC Mode
0
(offset: 24)
(offset: 25)
In conjunction with bit BISNC and bit SLEN the SYN character can be specified:
– MONOSYNC mode (BISNC = 0)
The SYN character is defined by SYNL.
SLEN = 0: the SYN character is specified by bits 0-5
SLEN = 1: the SYN character is specified by bits 0-7
– BISYNC mode (BISNC = 1)
The SYN character is defined by SYNL (low byte) and SYNH (high byte).
SLEN = 0: the 12-bit SYN character is specified by bits 0-5 of both SYNL and SYNH
SLEN = 1: the 16-bit SYN character is specified by bits 0-7 of both SYNL and SYNH
SYNL is received/transmitted first
In transmit direction, the SYN character thus specified is sent continuously when no data
are to be transmitted and ITF (Interframe Time Fill) control bit is set to “1”.
In receive direction, the receiver searches for the specified SYN character in the receive
data stream, when in hunt mode.
Termination Character Register (READ/WRITE)
Value after RESET: 00_H
7
TCR
TCR7
0
TCR0 (offset: 26)
TCR7–TCR0… Termination Character
If enabled via register RFC the received data stream is monitored for the
occurrence of a programmed “termination character”. When such a
character is found, an interrupt is issued if enabled via mask register IMR0.
The number of valid bytes in the RFIFO up to and including the termination
character is determined by reading the RBCL register.
Note: If selected character length is less than eight bits, leading (unused) bits of TCR
have to be set to “0”.
Semiconductor Group
196