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1893BKT 参数 Datasheet PDF下载

1893BKT图片预览
型号: 1893BKT
PDF下载: 下载PDF文件 查看货源
内容描述: [Interface Circuit, 1-Trnsvr, CMOS, PQCC56, 8 X 8 MM, PLASTIC, M0-220VLLD-5, MLF2-56]
分类和应用: 电信电信集成电路
文件页数/大小: 138 页 / 1444 K
品牌: IDT [ INTEGRATED DEVICE TECHNOLOGY ]
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ICS1893BF Data Sheet Rev. E - Release  
Chapter 7 Management Register Set  
7.7.2 Acknowledge (bit 5.14)  
The ISO/IEC specification defines bit 5.14 as the Acknowledge bit. When this bit is a:  
Zero, it indicates that the remote link partner has not received the ICS1893BF Link Control Word.  
One, it indicates to the ICS1893BF / STA that the remote link partner has acknowledged reception of the  
ICS1893BF Link Control Word.  
7.7.3 Remote Fault (bit 5.13)  
The ISO/IEC specification defines bit 5.13 as the Remote Fault bit. This bit is set based on the Link Control  
Word received from the remote link partner. When this bit is a logic:  
Zero, it indicates that the remote link partner detects a Link Fault.  
One, it indicates to the ICS1893BF / STA that the remote link partner detects a Link Fault.  
Note: For more information about this bit, see Section 7.3.9, “Remote Fault (bit 1.4)”.  
7.7.4 Technology Ability Field (bits 5.12:5)  
The Technology Ability Field (TAF) bits (bits 5.12:5) determine the specific abilities that the remote link  
partner is advertising. These bits are set based upon the Link Code Word received from the remote link  
partner during the auto-negotiation process. The ISO/IEC specification defines the TAF technologies in  
Annex 28B.  
The ISO/IEC specification reserves bits 5.12:10 for future use. When each of these reserved bits is:  
Read by an STA, the ICS1893BF returns a logic zero.  
Written to by an STA, the STA must use the default value specified in this data sheet.  
IDT uses some reserved bits to invoke auxiliary functions. To ensure proper operation of the ICS1893BF,  
an STA must maintain the default value of these bits. Therefore, IDT recommends that an STA always write  
the default value of any reserved bits during all management register write operations.  
7.7.5 Selector Field (bits 5.4:0)  
The Selector Field bits indicate the technology or encoding that the remote link partner is using for the  
Auto-Negotiation message. The ICS1893BF supports only IEEE Std. 802.3, represented by a value of  
00001b in bits 5.4:0. The ISO/IEC standard defines the Selector Field technologies in Annex 28A.  
Presently, the IEEE standard defines the following two valid codes:  
00001b (IEEE Std 802.3)  
00010b (IEEE Std 802.9)  
ICS1893BF, Rev. E, 8/11/09  
August, 2009  
Copyright © 2009, IDT, Inc.  
All rights reserved.  
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