PEB2465 SIEMENS [Siemens Semiconductor Group], PEB2465 Datasheet - Page 17

• Manufacturer Part Number: PEB2465
• Description: Four Channel Codec Filter
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

PEB 2465
Functional Description
®
2.2
IOM
-2 Interface
The IOM-2 Interface consists of two data lines and two clock lines. DU (data upstream)
carries data from the SICOFI-4 to a master device. This master device performs the
interface between the PCM-backplane, the -controller and up to 24 SICOFI-4’s. DD
(data downstream) carries data from the master device to the SICOFI-4. A frame
synchronization clock signal (8 kHz, FSC) as well as a data clock signal (2048 kHz or
4096 kHz DCL) has to be supplied to the SICOFI-4. The SICOFI-4 handles data as
described in the IOM-2 specification for analog devices.
Figure 4
®
IOM
-2 Interface Timing for 16 Voice Channels (per 8 kHz frame)
Semiconductor Group
17
02.97