pef20320 Infineon Technologies Corporation, pef20320 Datasheet - Page 84

• Manufacturer Part Number: pef20320
• Description: Multichannel Network Interface Controller For Hdlc With 32 Channels
• Manufacturer: Infineon Technologies Corporation

User’s Manual
ERR: issued if one of the following error conditions has occurred:
FO: issued if due to inaccessibility of internal buffer RB
Example:
HDLC channel with
CS = 1
INV = 0
CRC = 1
TRV = 00
FA = x
MODE = 11
IFTF = x
Motorola interface
Channel No. 1D
MFL = 10
– FCS was incorrect
– the bit length was greater than MFL
– the frame was stopped by 7F
– the frame could only be partly stored because of internal buffer overflow of RB
– a fast receive abort channel command was issued
– a receive abort channel command was detected during reception of a frame
– a frame could only be partly transferred to the shared memory because of a
– one ore more complete frames have been lost
– one ore more changes of interframe time-fill state were lost
receive descriptor with HOLD bit set
(maskable by RE in the channel spec.)
(maskable by RE in the channel spec.)
(FCS transferred to shared memory)
(no inversion)
(CRC 32)
(required as unused in HDLC mode)
(irrelevant)
(HDLC)
(irrelevant)
H
84
Functional Description
PEB 20320
01.2000