PEB20321 Datasheet, PDF (101/366 Pages) Siemens Semiconductor Group – Multichannel Network Interface Controller for HDLC MUNICH32X

PEB 20321
PEF 20321
Detailed Protocol Description
Interrupts
The possible interrupts for the mode in receive direction are:
HI: issued if HI bit is detected in the receive descriptor (not maskable).
FI: issued if a received frame has been finished as discussed in 1b) of the protocol
features or a receive abort channel command was detected during reception of a
frame.
(maskable by FIR in the channel spec.)
ERR: issued if one of the following error conditions has occurred
– the bit length of the frame was not divisible by 8
– the byte length was greater than MFL
– the frame could only be partly stored because of internal buffer overflow of RB
– a fast receive abort channel command was issued
– the frame could only be partly transferred due to a receive descriptor with set
HOLD bit.
(maskable by RE in the channel specification)
FO: issued if due to inaccessibility of the internal buffer RB one or more complete
frames have been lost. (maskable by RE in the channel spec.)
Example:
TMB channel with
INV = 0
(no inversion)
CRC = 0
(required)
TRV = 00 (required)
FA = 0
(required)
MODE = 01 (TMB)
IFTF = 0
(required)
MFL = 7
Big Endian Data Format
Channel No. A
Data Sheet
101
2001-02-14