參數(shù)資料
型號: PEB2265
廠商: SIEMENS AG
元件分類: Codec
英文描述: Two Channel Codec Filter with IOM㈢-2 Interface (IOM㈢-2 - SICOFI㈢-2)
中文描述: 雙信道編解碼器與國際移民組織㈢-2接口(移徙㈢-2 - SICOFI㈢-2)
文件頁數(shù): 64/77頁
文件大?。?/td> 851K
代理商: PEB2265
PEB 2265
Appendix
Semiconductor Group
64
1997-07-01
7
Appendix
7.1
IOM
-2 Interface Monitor Transfer Protocol
7.1.1
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
μ
s rate) until it is acknowledged by the
IOM-2 – SICOFI-2 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 kbyte/s.
Figure 32
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