參數(shù)資料
型號： ICS1893AFILFT
廠商： IDT, Integrated Device Technology Inc
文件頁數(shù)： 90/136頁
文件大小： 0K
描述： PHYCEIVER LOW PWR 3.3V 48-SSOP
標(biāo)準(zhǔn)包裝： 1,000
系列： PHYceiver™
類型： PHY 收發(fā)器
規(guī)程： MII
電源電壓： 3.14 V ~ 3.47 V
安裝類型： 表面貼裝
封裝/外殼： 48-BSSOP（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 48-SSOP
包裝： 帶卷 (TR)
其它名稱： 1893AFILFT
Chapter 8
Management Register Set
ICS1893AF, Rev. D 10/26/04
October, 2004
57
ICS1893AF Data Sheet - Release
Copyright 2004, Integrated Circuit Systems, Inc.
All rights reserved.
8.1.2
Management Register Bit Access
The ICS1893AF Management Registers include one or more of the following types of bits:
8.1.3
Management Register Bit Default Values
The tables in this chapter specify for each register bit the default value, if one exists. The ICS1893AF sets
all Management Register bits to their default values after a reset. Table 8-4 lists the valid default values for
ICS1893AF Management Register bits.
Note:
The ICS1893AF has a number of reserved bits throughout the Management Registers. Most of
these bits provide enhanced test modes. The Management Register tables provide the default
values for these bits. The STA must not change the value of these bits under any circumstance. If
the STA inadvertently changes the default values of these reserved register bits, normal operation
of the ICS1893AF can be affected.
Table 8-3.
Description of Management Register Bit Types
Management
Register Bit Types
Bit
Symbol
Description
Read-Only
RO
An STA can obtain the value of a RO register bit. However, it cannot
alter the value of (that is, it cannot write to) an RO register bit. The
ICS1893AF isolates any STA attempt to write a value to an RO bit.
Command Override
Write
CW
An STA can read a value from a CW register bit. However, write
operations are conditional, based on the value of the Command
Register Override bit (bit 16.15). When bit 16.15 is logic:
Zero (the default), the ICS1893AF isolates STA attempts to write to
the CW bits (that is, CW bits cannot be altered when bit 16.15 is
logic zero).
One, the ICS1893AF permits an STA to alter the value of the CW
bits in the subsequent register write. (Bit 16.15 is self-clearing and
automatically clears to zero on the subsequent write.)
Read/Write
R/W
An STA can unconditionally read from or write to a R/W register bit.
Read/Write Zero
R/W0
An STA can unconditionally read from a R/W0 register bit, but only a
‘0’ value can be written to this bit.
Table 8-4.
Range of Possible Valid Default Values for ICS1893AF Register Bits
Default Condition
Default Value
–
Indicates there is no default value for the bit
0
Indicates the bit’s default value is logic zero
1
Indicates the bit’s default value is logic one
State of pin at reset
For some bits, the default value depends on the state (that is, the logic value) of a
particular pin at reset (that is, the logic value of a pin is latched at reset). An
example of pins that have a default condition that depends on the state of the pin
at reset are the PHY / LED pins (P0AC, P1CL, P2LI, P3TD, and P4RD) discussed
in the following sections:
Section 6.5, “Status Interface”
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ICS1893AFLFT 功能描述:PHYCEIVER LOW PWR 3.3V 48-SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:PHYceiver™ 標(biāo)準(zhǔn)包裝:250 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
ICS1893AFT 功能描述:PHYCEIVER LOW PWR 3.3V 48-SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:PHYceiver™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR)
ICS1893AG 制造商:ICS 制造商全稱:ICS 功能描述:3.3 V 10Base-T/100Base-TX Integrated PHYceiver-TM
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