PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 48

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

Figure 21
B-Channel Routes and Access to B-Channel Data
2.3.6
The B1 and/or B2 channels are accessed by reading the B1CR/B2CR or by reading and writing
the C1R/C2R registers. The P access can be synchronized to the serial interface by means
of a Synchronous Transfer programmed in the STCR register.
The read/write access possibilities are shown in table 3.
Semiconductor Group
FF H
FF H
FF H
P Access to B Channels
*
*
)
)
* B1 = FF
SSI
SLD
SSI
SLD
)
B2 = Undefines Value
SSI Switching
IOM
= µP Access
= B-Channel Route
H
µP
P µ
R
Loop
IOM
IOM
R
R
48
FF H
FF
H
SSI
SLD
SSI
SLD
SLD
SLD Loop
Functional Description
Switching
P µ
P µ
IOM
IOM
R
R
ITS00863
FF H