PEB20571 INFINEON [Infineon Technologies AG], PEB20571 Datasheet - Page 79

• Manufacturer Part Number: PEB20571
• Description: ICs for Communications
• Manufacturer: INFINEON [Infineon Technologies AG]

3.3
IOM-2 is a standardized interface for interchip communication in ISDN line cards for
digital exchange systems developed by ALCATEL, Siemens, Plessey and ITALTEL.
The IOM-2 interface is a four-wire interface with a bit clock, a frame clock and one data
line per direction. It has a flexible data clock. This way, data transmission requirements
are optimized for different applications.
Figure 3-9
Note: In Linecard mode, 8 identical IOM-2 subchannels are provided. In analog
3.3.1
FSC
DCL
DD
DU
B1, B2
MONITOR
D
C/I
MR
MX
*) For detailed clock and data rates, refer to IOMU feature description in Chapter 4.3.2
Preliminary Data Sheet
Linecards, a 6-bit C/I Channel is available for signaling information. In digital
Linecards, a dedicated 2-bit D-channel carries the signaling information.
IOM
Signals / Channels
IOM
User data channels, 64 kbit/s each
Frame Synchronization Clock, 8 kHz
Data Clock, up to 4.096 MHz *)
Data Downstream, up to 4.096 Mbit/s *)
Data Upstream, up to 4.096 Mbit/s *)
Monitor Channel
Signaling Channel, 16 kbit/s
Command/Indication Channel
Monitor Receive handshake signal
Monitor Transmit handshake signal
®
-2 Interface
®
-2 Interface in Digital Linecard Mode
3-23
Interface Description
DELIC
2003-08