1893AFILFT IDT, 1893AFILFT Datasheet - Page 57
![no-image](/images/no-image-200.jpg)
1893AFILFT
Manufacturer Part Number
1893AFILFT
Description
Ethernet ICs 3.3V 10/100 BASE TX INTEGRATED PHYCEIVER
Manufacturer
IDT
Datasheet
1.1893AFLF.pdf
(136 pages)
Specifications of 1893AFILFT
Rohs
yes
Part # Aliases
ICS1893AFILFT
- Current page: 57 of 136
- Download datasheet (963Kb)
8.1.2 Management Register Bit Access
8.1.3 Management Register Bit Default Values
ICS1893AF, Rev. D 10/26/04
The ICS1893AF Management Registers include one or more of the following types of bits:
Table 8-3. Description of Management Register Bit Types
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.
ICS1893AF Management Register bits.
Table 8-4. Range of Possible Valid Default Values for ICS1893AF Register Bits
Note:
Read-Only
Command Override
Write
Read/Write
Read/Write Zero
Register Bit Types
State of pin at reset
Default Condition
ICS1893AF Data Sheet - Release
Management
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.
–
0
1
Indicates there is no default value for the bit
Indicates the bit’s default value is logic zero
Indicates the bit’s default value is logic one
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:
Symbol
•
•
•
R/W0
R/W
CW
RO
Bit
Section 6.5, “Status Interface”
Section 8.11, “Register 16: Extended Control Register”
Section 9.2.2, “Multi-Function (Multiplexed) Pins: PHY Address and LED Pins”
Copyright © 2004, Integrated Circuit Systems, Inc.
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.
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:
An STA can unconditionally read from or write to a R/W register bit.
An STA can unconditionally read from a R/W0 register bit, but only a
‘0’ value can be written to this bit.
•
•
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.)
All rights reserved.
57
Default Value
Description
Table 8-4
Chapter 8 Management Register Set
lists the valid default values for
October, 2004
Related parts for 1893AFILFT
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ICS1893AFI](/images/manufacturer_photos/0/3/324/idt__integrated_device_technology_inc_tmb.jpg)
Part Number:
Description:
PHYCEIVER LOW PWR 3.3V 48-SSOP
Manufacturer:
IDT, Integrated Device Technology Inc
Datasheet:
![ICS1893AF](/images/manufacturer_photos/0/3/324/idt__integrated_device_technology_inc_tmb.jpg)
Part Number:
Description:
PHYCEIVER LOW PWR 3.3V 48-SSOP
Manufacturer:
IDT, Integrated Device Technology Inc
Datasheet:
![1893](/images/no-image3.png)
Part Number:
Description:
#1893 LAMP T-3 1/4 14V 330MA MINIATURE BAYONET BASE
Manufacturer:
EIKO
![1893-10PK](/photos/22/65/226522/4436756_tmb.jpg)
Part Number:
Description:
LAMP, INCANDESCENT, BAYONET, 14V
Manufacturer:
CHICAGO MINIATURE LIGHTING, LLC
Datasheet:
![IDT TEMP SENSOR SAMPLE KIT](/images/manufacturer_photos/0/3/333/integrated_device_technology__idt__tmb.jpg)
Part Number:
Description:
IDT TS3000AND TSE2002 SENSORS SAMPLE PACK OFFER
Manufacturer:
Integrated Device Technology (Idt)
![IDT-00/E](/photos/21/57/215774/4550311_tmb.jpg)
Part Number:
Description:
THERMOCOUPLE DIGITAL PANEL METER
Manufacturer:
NEWPORT ELECTRONICS
![IDT%4841CP](/images/manufacturer_photos/0/3/334/integrated_device_technology__inc__tmb.jpg)
Part Number:
Description:
High-performance CMOS bus interface latches
Manufacturer:
Integrated Device Technology, Inc.
![IDT-3030](/images/no-image3.png)
Part Number:
Description:
Accessories Connectors and Cables
Manufacturer:
ADVANTECH [Advantech Co., Ltd.]
Datasheet:
![IDT-5101](/images/no-image3.png)
Part Number:
Description:
Accessories 5.25 Industrial Disk Tray
Manufacturer:
ADVANTECH [Advantech Co., Ltd.]
Datasheet:
![IDT74FCT162244ATPA](/images/manufacturer_photos/0/3/324/idt__integrated_device_technology_inc_tmb.jpg)
Part Number:
Description:
IDT PART
Manufacturer:
IDT, Integrated Device Technology Inc
Datasheet: