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PEB2091NV5.3 参数 Datasheet PDF下载

PEB2091NV5.3图片预览
型号: PEB2091NV5.3
PDF下载: 下载PDF文件 查看货源
内容描述: 集成电路通信( ISDN Echocancellation电路) [ICs for Communications(ISDN Echocancellation Circuit)]
分类和应用: 电信集成电路综合业务数字网通信
文件页数/大小: 299 页 / 1531 K
品牌: INFINEON [ Infineon ]
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PEB 2091  
PEF 2091  
Functional Description  
3.6.2.2 C/I Channel 1  
C/I Channel 1 (C/I1) is only available in TE mode (DCL = 1.536 MHz). The channel  
consists of six bits in each direction.  
In stand-alone mode the C/I1 channel is ignored by the U transceiver.  
In µP mode it can be accessed via registers CIWI/U and CIRI/U (see "C/I Channel  
Access", page 100).  
3.6.3  
IOM®-2 Monitor Channel  
The Monitor Channel protocol is a full duplex handshake protocol used for programming  
and monitoring devices in the active Monitor Channel or on Monitor Channel 1 in the TE  
mode. These can include the IEC-Q itself as well as external devices connected to the  
IOM®-2 interface.  
The Monitor Channel consists of 8 bits, located at position 17-24 of every time slot. For  
handshake control bits MR and MX at positions 31 and 32 of every time slot are used  
(see Figure 24, page 71).  
3.6.3.1 Active Monitor Channel  
The active Monitor Channel is available in all operational modes. The IEC-Q is always  
controlled and monitored via active Monitor Channel.  
In stand-alone mode the Monitor Channel is controlled by an external device, e.g. the  
ICC, 3PAC, IPAC or ISAR, EPIC®, ELIC®.  
In µP mode the Monitor Channel can either be controlled by an external device or via the  
microprocessor interface. For a description on how to access the active Monitor Channel  
via the µP-interface please refer to "Monitor Channel Access", page 101.  
Structure of Monitor messages  
Monitor messages sent to the IEC-Q are always 2 bytes long, monitor messages  
returned by the IEC-Q are 2 or 4 bytes long depending on the command. 4 byte long  
return messages (internal register data) are issued via 2 messages containing 2 bytes  
each. Table 11 below shows the general structure of 2 bytes monitor messages.  
Table 11  
General Monitor Channel Structure  
1. Byte  
2. Byte  
A3 A2 A1 A0  
Address  
D11 D10 D9 D8  
Data  
D7 D6 D5 D4  
Data  
D3 D2 D1 D0  
data  
Semiconductor Group  
76  
Data Sheet 01.99