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1893CF 参数 Datasheet PDF下载

1893CF图片预览
型号: 1893CF
PDF下载: 下载PDF文件 查看货源
内容描述: [Interface Circuit, 1-Trnsvr, CMOS, PDSO48, 0.300 MM INCH, SSOP-48]
分类和应用: 网络接口电信集成电路电信电路光电二极管
文件页数/大小: 136 页 / 1040 K
品牌: IDT [ INTEGRATED DEVICE TECHNOLOGY ]
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ICS1893AF Data Sheet - Release  
Chapter 2 Conventions and Nomenclature  
Chapter 2 Conventions and Nomenclature  
Table 2-1 lists and explains the conventions and nomenclature used throughout this data sheet.  
Table 2-1. Conventions and Nomenclature  
Item  
Convention / Nomenclature  
Bits  
A bit in a register is identified using the format ‘register.bit’. For example, bit  
0.15 is bit 15 of register 0.  
When a colon is used with bits, it indicates the range of bits. For example,  
bits 1.15:11 are bits 15, 14, 13, 12, and 11 of register 1.  
For a range of bits, the order is always from the most-significant bit to the  
least-significant bit.  
Code groups  
Colon (:)  
Within this table, see the item ‘Symbols’  
Within this table, see these items:  
‘Bits’  
‘Pin (or signal) names’  
Numbers  
As a default, all numbers use the decimal system (that is, base 10) unless  
followed by a lowercase letter. A string of numbers followed by a lowercase  
letter:  
– A ‘b’ represents a binary (base 2) number  
– An ‘h’ represents a hexadecimal (base 16) number  
– An ‘o’ represents an octal (base 8) number  
All numerical references to registers use decimal notation (and not  
hexadecimal).  
Pin (or signal) names  
All pin or signal names are provided in capital letters.  
A pin name that includes a forward slash ‘/’ is a multi-function, configuration  
pin. These pins provide the ability to select between two ICS1893AF  
functions. The name provided:  
– Before the ‘/’ indicates the pin name and function when the signal level  
on the pin is logic zero.  
– After the ‘/’ indicates the pin name and function when the signal level on  
the pin is logic one.  
For example, the HW/SW pin selects between Hardware (HW) mode and  
Software (SW) mode. When the signal level on the HW/SW pin is logic:  
– Zero, the ICS1893AF Hardware mode is selected.  
– One, the ICS1893AF Software mode is selected.  
An ‘n’ appended to the end of a pin name or signal name (such as  
RESETn) indicates an active-low operation.  
When a colon is used with pin or signal names, it indicates a range. For  
example, TXD[3:0] represents pins/signals TXD3, TXD2, TXD1, and TXD0.  
When pin name abbreviations are spelled out, words in parentheses  
indicate additional description that is not part of the pin name abbreviation.  
Registers  
A bit in a register is identified using the format ‘register.bit’. For example, bit  
0.15 is bit 15 of register 0.  
All numerical references to registers use decimal notation (and not  
hexadecimal).  
When register name abbreviations are spelled out, words in parentheses  
indicate additional description that is not part of the register name  
abbreviation.  
ICS1893AF
Copyright © 2004, Integrated Circuit Systems, Inc.  
All rights reserved.  
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