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PM7348 参数 Datasheet PDF下载

PM7348图片预览
型号: PM7348
PDF下载: 下载PDF文件 查看货源
内容描述: [ATM/SONET/SDH IC, CMOS, PBGA324,]
分类和应用: ATM异步传输模式
文件页数/大小: 318 页 / 1736 K
品牌: PMC [ PMC-SIERRA, INC ]
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S/UNI-IMA-4 Telecom Standard Product Data Sheet  
Released  
11.3 UTOPIA Interface Registers  
These registers control the configuration of the UTOPIA interface.  
Register 0x020: Transmit Any-PHY/UTOPIA Cell Available Enable  
Bit  
15:11  
Type  
R
Function  
Unused  
Default  
0
10:0  
R/W  
TCAEN[10:0]  
0
TCAEN[10:0]  
The TCAEN[10:0] bits control the response to polling on the Any-PHY/UTOPIA Transmit  
port. The TCAEN[10:0] bits can be used to select which group of 8 virtual PHY’s the  
device should respond to. Only one bit should be set to enable a range of 8 addresses; for  
example, setting TCAEN[0] enables addresses 0 through 7, setting TCAEN[9] enables  
addresses 72 through 79, and setting TCAEN[10] enables addresses 80 through 83. If a  
disabled PHY address is polled, TCA remains high impedance. Similarly, PHY selection is  
ignored and no cell is transferred to the S/UNI-IMA-4 when a disabled PHY is addressed.  
This is typically used to allow more than one slave device to share the Transmit UTOPIA  
bus or to preserve addresses on the Any-PHY bus. Disabling all traffic to the Any-  
PHY/UTOPIA input port is achieved by setting all TCAEN[10:0] bits to logic 0.  
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.  
Document No.: PMC-2020889, Issue 2  
110