PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 43

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

2.3.2
In IOM-1 interface mode
– pin IDP0 carries B channel, MONITOR, D and C/I data from layer-1 to layer-2
– pin IDP1 carries B channel, MONITOR, D and C/I data from layer-2 to layer-1.
IDP1 is an open drain output with an integrated pull up circuitry. The B channels can be set
inactive (FF
to 0 (SLD loop), which is the state after a hardware reset.
The MONITOR channel is inactive (FF
the TIC bus (i.e. the fourth octet of IOM frame: D and C/I channels) is not accessed.
Figure 16
IOM
Semiconductor Group
®
-1 Data Ports 0, 1 (IOM
S/T Interface
IOM
H
) by setting the B channel connect bits C1C1-0 and C2C1-0 in the SPCR register
®
-1 Interface Connections
Layer-1
Functions
IDP0
IDP1
®
-1)
ISAC -S
H
R
) if no MONITOR channel transfer is programmed and
IDP0
Layer-2
Functions
µ
P
IDP1
V
DD
43
(Open Drain)
Optional: Up to 7 Layer 2
Controllers can have access to
the
C/I Channel)
IDP0
IDP1
IOM -1 TIC Bus (D and
R
Functional Description
IOM -1 TIC Bus
R
Layer-2
e.g. ICC
(PEB 2070)
IDP0
µ
P
IDP1
ITS02329