SAB82538 Datasheet, PDF (138/253 Pages) Infineon Technologies AG – ICs for Communications

VN3 – VN0… Version Number of Chip
0… Version 1
1… Version 2
SAB 82538
SAF 82538
HDLC Mode
Baud Rate Generator Register (WRITE)
7
BGR
BR7
0
BR0 (offset: 34)
BR7 – BR0… Baud Rate, Bit 7-0
Together with bits BR9, BR8 of CCR2, determines the division factor of the
baud rate generator.
In terms of the value N programmed in BR9 - BR0 (n = 0… 1023), the
division factor k is:
k = (n + 1) × 2
Receive Length Check Register (WRITE)
7
RLCR
RC RL6
0
RL0 (offset: 35)
RC…
Receive Check (on/off)
0… Receive Length Check feature disabled
1… Receive Length Check feature enabled
RL6 – RL0… Receive Length
The maximum receive length after which data reception is suspended can
be programmed here. The receive length is (RL + 1) × 32 bytes, where RL
is the value programmed via RL6-0.
A frame exceeding this length is treated as if it was aborted by the opposite
station (RME Interrupt, RAB bit set).
In this case, the Receive Byte Count (RBCH, RBCL) is greater than the
programmed Receive Length.
Semiconductor Group
138