KSZ8081MNX Datasheet PDF - Micrel Semiconductor
| Part Number | KSZ8081MNX | |
| Description | 10Base-T/100Base-TX Physical Layer Transceiver | |
| Manufacturers | Micrel Semiconductor | |
| Logo |  |
|
|
There is a preview and KSZ8081MNX download ( pdf file ) link at the bottom of this page. Total 30 Pages | ||
Preview 1 page No Preview Available !
KSZ8081MNX/KSZ8081RNB
10Base-T/100Base-TX
Physical Layer Transceiver
Revision 1.4
General Description
The KSZ8081 is a single-supply 10Base-T/100Base-TX
Ethernet physical-layer transceiver for transmission and
reception of data over standard CAT-5 unshielded twisted
pair (UTP) cable.
The KSZ8081 is a highly-integrated PHY solution. It
reduces board cost and simplifies board layout by using
on-chip termination resistors for the differential pairs and
by integrating a low-noise regulator to supply the 1.2V
core.
The KSZ8081MNX offers the Media Independent Interface
(MII) and the KSZ8081RNB offers the Reduced Media
Independent Interface (RMII) for direct connection with
MII/RMII-compliant Ethernet MAC processors and
switches.
A 25MHz crystal is used to generate all required clocks,
including the 50MHz RMII reference clock output for the
KSZ8081RNB.
The KSZ8081 provides diagnostic features to facilitate
system bring-up and debugging in production testing and
in product deployment. Parametric NAND tree support
enables fault detection between KSZ8081 I/Os and the
board. Micrel LinkMD® TDR-based cable diagnostics
identify faulty copper cabling.
The KSZ8081MNX and KSZ8081RNB are available in 32-
pin, lead-free QFN packages (see “Ordering Information”).
Datasheets and support documentation are available on
website at: www.micrel.com.
Features
• Single-chip 10Base-T/100Base-TX IEEE 802.3
compliant Ethernet transceiver
• MII interface support (KSZ8081MNX)
• RMII v1.2 Interface support with a 50MHz reference
clock output to MAC, and an option to input a 50MHz
reference clock (KSZ8081RNB)
• Back-to-back mode support for a 100Mbps copper
repeater
• MDC/MDIO management interface for PHY register
configuration
• Programmable interrupt output
• LED outputs for link, activity, and speed status indication
• On-chip termination resistors for the differential pairs
• Baseline wander correction
• HP Auto MDI/MDI-X to reliably detect and correct
straight-through and crossover cable connections with
disable and enable option
• Auto-negotiation to automatically select the highest link-
up speed (10/100Mbps) and duplex (half/full)
• Power-down and power-saving modes
• LinkMD TDR-based cable diagnostics to identify faulty
copper cabling
• Parametric NAND Tree support for fault detection
between chip I/Os and the board
• HBM ESD rating (6kV)
Functional Diagram
LinkMD is a registered trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
August 19, 2015
Revision 1.4
|
| |
 
Micrel, Inc.
KSZ8081MNX/KSZ8081RNB
NAND Tree Support .............................................................................................................................................................. 35
NAND Tree I/O Testing ..................................................................................................................................................... 36
Power Management .............................................................................................................................................................. 37
Power-Saving Mode .......................................................................................................................................................... 37
Energy-Detect Power-Down Mode .................................................................................................................................... 37
Power-Down Mode ............................................................................................................................................................ 37
Slow-Oscillator Mode......................................................................................................................................................... 37
Reference Circuit for Power and Ground Connections......................................................................................................... 38
Typical Current/Power Consumption .................................................................................................................................... 39
Transceiver (3.3V), Digital I/Os (3.3V) .............................................................................................................................. 39
Transceiver (3.3V), Digital I/Os (2.5V) .............................................................................................................................. 39
Transceiver (3.3V), Digital I/Os (1.8V) .............................................................................................................................. 40
Register Map ......................................................................................................................................................................... 41
Register Description .............................................................................................................................................................. 42
Absolute Maximum Ratings .................................................................................................................................................. 52
Operating Ratings ................................................................................................................................................................. 52
Electrical Characteristics....................................................................................................................................................... 52
Timing Diagrams ................................................................................................................................................................... 54
MII SQE Timing (10Base-T) .............................................................................................................................................. 54
MII Transmit Timing (10Base-T)........................................................................................................................................ 55
MII Receive Timing (10Base-T)......................................................................................................................................... 56
MII Transmit Timing (100Base-TX) ................................................................................................................................... 57
MII Receive Timing (100Base-TX) .................................................................................................................................... 58
RMII Timing ....................................................................................................................................................................... 59
Auto-Negotiation Timing .................................................................................................................................................... 60
MDC/MDIO Timing ............................................................................................................................................................ 61
Power-up/Reset Timing ..................................................................................................................................................... 62
Reset Circuit.......................................................................................................................................................................... 63
Reference Circuits – LED Strap-In Pins................................................................................................................................ 64
Reference Clock – Connection and Selection ...................................................................................................................... 65
Magnetic – Connection and Selection .................................................................................................................................. 66
Package Information and Recommended Land Pattern ....................................................................................................... 68
August 19, 2015
5
Revision 1.4
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for KSZ8081MNX electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ KSZ8081MNX.PDF Datasheet ] | |
Share Link :
Electronic Components Distributor
|
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
| SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
| Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
| Part Number | Description | Manufacturers |
| KSZ8081MNX | The function is 10Base-T/100Base-TX Physical Layer Transceiver. | Micrel Semiconductor |
Semiconductors commonly used in industry:
1N4148 |
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
KSZ8
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA | ||