PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 76

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

Figure 38
Applications of TIC Bus in IOM
2.4.6
In IOM-2 interface mode the TIC bus capability is only available in TE mode. The arbitration
mechanism implemented in the last octet of IOM channel 2 of the IOM allows the access of
external communication controllers (up to 7) to the layer-1 functions provided in the ISAC-S
and to the D channel. (TIC bus; see figure 38). To this effect the outputs of the controllers
(ICC:ISDN Communication Controller PEB 2070) are wired-or-and connected to pin IDP1. The
inputs of the ICCs are connected to pin IDP0. External pull-up resistors on IDP0/1 are required.
The arbitration mechanism must be activated by setting MODE:DIM2–0=001 (see
chapter 4.1.7).
An access request to the TIC bus may either be generated by software ( P access to the C/I
Semiconductor Group
TIC Bus Access
D-Channel
Telemetry/
Packet
Communication
B-Channel
Voice/Data
Communication
with D-Channel
Signaling
B-Channel
Voice/Data
Communication
with D-Channel
Signaling
E-Channel
IVD LAN
Application
®
-2 Bus Configuration
µP
ICC
IDP0
Echo
ICC (7)
ICC
76
E-Channel
(1)
(2)
DCL
IDP1
FSC
ISAC -S
R
IOM -2
R
Functional Description
CCITT
S-Interface
ITS00854