PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 355

• Manufacturer Part Number: PEB22554
• Description: ICs for Communications
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

RAB…
HA1, HA0…
HFR …
LA …
Semiconductor Group
Receive Message Aborted
The received frame was aborted from the transmitting station.
According to the HDLC protocol, this frame must be discarded by the
receiver station.
High Byte Address Compare
Significant only if 2-byte address mode has been selected.
In operating modes which provide high byte address recognition, the
QuadFALC compares the high byte of a 2-byte address with the
contents of two individually programmable registers (RAH1, RAH2)
and the fixed values FE
Dependent on the result of this comparison, the following bit
combinations are possible:
Note: If RAH1, RAH2 contain identical values, a match is indicated
HDLC Frame Format
0
1
Note: RSIS 7-2, 0 is not valid with a BOM frame.
Low Byte Address Compare
Significant in HDLC modes only.
The low byte address of a 2-byte address field, or the single address
byte of a 1-byte address field is compared with two registers. (RAL1,
RAL2).
0
1
00… RAH2 has been recognized
01… Broadcast address has been recognized
10… RAH1 has been recognized C/R = 0(bit 1)
11… RAH1 has been recognized C/R = 1 (bit 1)
A HDLC frame was received.
RAL2 has been recognized
RAL1 has been recognized
A BOM frame was received.
by ‘10’or ‘11’.
355
H
and FC
H
(broadcast address).
Operational Description T1 / J1
PEB 22554
09.98