peb20534 Infineon Technologies Corporation, peb20534 Datasheet - Page 190

• Manufacturer Part Number: peb20534
• Description: Dma Supported Serial Communication Controller With 4 Channels
• Manufacturer: Infineon Technologies Corporation

PEB 20534
PEF 20534
Detailed Protocol Description
8.1.9.8
Receive Length Check Feature
The SCC offers the possibility to supervise the maximum length of received frames and
to terminate data reception in the case that this length is exceeded.
This feature is controlled via the special Receive Length Check Register RLCR.
The function is enabled by setting bit ’RC’ (Receive Check) and the maximum frame
length to be checked is programmed via bit field ’RL’. The maximum receive length can
be determined as a multiple of 32-byte blocks as follows:
MAX_LENGTH = (RL + 1)
32 ,
MAX_LENGTH = 32 ... 65536
where RL is the value written to bit field ’RL’.
All frames exceeding this length are treated as if they had been aborted by the remote
station, i.e. the CPU is informed via
– a FLEX interrupt is generated by the SCC, and
– the receive abort indication ’RAB’ in the Receive Status Byte (RSTA) is set.
Receive operation continues with the beginning of the next receive frame.
Data Sheet
190
2000-05-30