PEB2465 SIEMENS [Siemens Semiconductor Group], PEB2465 Datasheet - Page 69

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

10
10.1
10.1.1 Monitor Channel Operation
The monitor channel is used for the transfer of maintenance information between two
functional blocks. Using two monitor control bits (MR and MX) per direction, the data are
transferred in a complete handshake procedure. The MR and MX bits in the fourth octet
(C/I channel) of the IOM-2 frame are used for the handshake procedure of the monitor
channel.
The monitor channel transmission operates on a pseudo-asynchronous basis:
– Data transfer (bits) on the bus is synchronized to Frame Sync FSC
– Data flow (bytes) are asynchronously controlled by the handshake procedure.
For example: Data is placed onto the DD-Monitor-Channel by the Monitor-transmitter of
the master device (DD-MX-Bit is activated i.e. set to ‘0’). This data transfer will be
repeated within each frame (125 s rate) until it is acknowledged by the SICOFI-4
Monitor-receiver by setting the DU-MR-bit to ‘0’, which is checked by the
Monitor-transmitter of the master device. Thus, the data rate is not 8-kbytes/sec.
Figure 32
Semiconductor Group
Appendix
IOM
®
-2 Interface Monitor Transfer Protocol
69
PEB 2465
Appendix
02.97