SAB82525H-V21 Datasheet, PDF (84/126 Pages) Siemens Semiconductor Group – High-Level Serial Communication Controller Extended

Extended Interrupt Register (READ)
Value after RESET: 00_H
7
EXIR
XMR XDU PCE RFO CSC RFS 0
EXE
SAB 82525
SAB 82526
SAF 82525
SAF 82526
0
0
(24/64)
XMR … Transmit Message Repeat
The transmission of the last message has to be repeated because
– the HSCX has received a negative acknowledgement in auto-mode,
– or a collision has occurred after sending the 32nd data byte of a message in a bus
configuration.
– or CTS (transmission enable) has been withdrawn after sending the 32nd data byte of a
message in point-to-point configuration.
XDU/EXE … Transmit Data Underrun/Extended Transmission End
The actual frame has been aborted with IDLE, because the XFIFO holds no further data,
but the frame is not yet complete!
In extended transparent mode, this bit indicates the transmission-end condition.
Note: It is not possible to send transparent-, or I-frames when a XMR or XDU interrupt is
indicated.
Semiconductor Group
84