PEB2256H-V12 Infineon Technologies, PEB2256H-V12 Datasheet - Page 223

• Manufacturer Part Number: PEB2256H-V12
• Description: IC INTERFACE LINE 3.3V 80-MQFP
• Manufacturer: Infineon Technologies

Specifications of PEB2256H-V12

• Applications: *
• Interface: *
• Voltage - Supply: *
• Package / Case: 80-SQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PEB2256H-V12; PEB2256H-V12IN

RFT(1:0)
Data Sheet
RFT1
0
0
1
1
RFT1
0
0
1
1
RFIFO Threshold Level - HDLC Channel 1
The size of the accessible part of RFIFO can be determined by
programming these bits. The number of valid bytes after a RPF
interrupt is given in the following table:
The value of RFT1, 0 can be changed dynamically.
– If reception is not running or
– after the current data block has been read, but before the
command CMDR.RMC is issued (interrupt controlled data transfer).
Note: It is seen that changing the value of RFT1, 0 is possible even
during the reception of one frame. The total length of the
received frame can be always read directly in RBCL, RBCH
after a RPF interrupt, except when the threshold is increased
during reception of that frame. The real length can then be
inferred by noting which bit positions in RBCL are reset by a
RMC command (see table below):
RFT0
0
1
0
1
RFT0
0
1
0
1
223
Size of Accessible Part of RFIFO
32 bytes (reset value)
16 bytes
4 bytes
2 bytes
Bit Positions in RBCL Reset by a
CMDR.RMC Command
RBC(4:0)
RBC(3:0)
RBC(1:0)
RBC0
FALC56 V1.2
E1 Registers
PEB 2256
2002-08-27