PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 213

• Manufacturer Part Number: PEB2085
• Description: ISDN SubscribernAccess Controller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

CRC
RAB
SA1-0
TA
Notes:
Semiconductor Group
Number of address
bytes = 1
Number of address
bytes = 2
CRC Check
The CRC is correct (1) or incorrect (0).
Receive Message Aborted
The receive message was aborted by the remote station (1), i.e. a sequence of 7 1’s
was detected.
SAPI Address Identification
TEI Address Identification
SA1-0 are significant in auto-mode and non-auto-mode with a two-byte address field,
as well as in transparent mode 3. TA is significant in all modes except in transparent
modes 2 and 3.
Two programmable SAPI values (SAP1, SAP2) plus a fixed group SAPI (SAPG of
value FC/FE
TEI (TEIG of value FF
The result of the address comparison is given by SA1-0 and TA, as follows
If the SAPI values programmed to SAP1 and SAP2 are identical the reception of a
frame with SAP2/TEI2 results in the indication SA1 = 1, SA0 = 0, TA = 1.
Normally RSTA should be read by the processor after an RME interrupt in order to
determine the status of the received frame. The contents of RSTA are valid only
after an RME interrupt, and remain so until the frame is acknowledged via the RMC
bit.
H
), and two programmable TEI values (TEI1, TEI2) plus a fixed group
SA1
x
x
0
0
0
0
1
1
1
H
SA0
x
x
0
0
1
1
0
0
1
), are available for address comparison.
TA
0
1
0
1
0
1
0
1
x
213
Address Match with
1
TEI2
TEI1
SAP2
SAP2
SAPG
SAPG
SAP1
SAP1
st
Byte
reserved
Register Description
2
–
–
TEIG
TEI2
TEIG
TEI1 or TEI2
TEIG
TEI1
nd
Byte