Datasheet
Table Of Contents
- 1.0 Introduction
- 2.0 Pin Description and Configuration
- 3.0 Functional Description
- 3.1 10BASE-T/100BASE-TX Transceiver
- 3.2 RMII Interface
- 3.3 Back-to-Back Mode – 100 Mbps Copper Repeater
- 3.4 MII Management (MIIM) Interface
- 3.5 Interrupt (INTRP)
- 3.6 HP Auto MDI/MDI-X
- 3.7 Loopback Mode
- 3.8 LinkMD® Cable Diagnostic
- 3.9 NAND Tree Support
- 3.10 Power Management
- 3.11 Reference Circuit for Power and Ground Connections
- 3.12 Typical Current/Power Consumption
- 4.0 Register Descriptions
- 5.0 Operational Characteristics
- 6.0 Electrical Characteristics
- 7.0 Timing Diagrams
- 8.0 Reset Circuit
- 9.0 Reference Circuits — LED Strap-In Pins
- 10.0 Reference Clock - Connection and Selection
- 11.0 Magnetic - Connection and Selection
- 12.0 Package Outline
2016 Microchip Technology Inc. DS00002199A-page 37
KSZ8081RNA/RND
Note 6-1 Current consumption is for the single 3.3V supply KSZ8081RNA/RND device only, and includes the
transmit driver current and the 1.2V supply voltage (V
DD_1.2
) that are supplied by the KSZ8081RNA/
RND.
REF_CLK Output
50 MHz RMII Clock Output
Jitter
——300—ps
Peak-to-peak. Applies only to RMII -
25 MHz Clock Mode.
100 Mbps Mode - Industrial Applications Parameters
Link Loss Reaction
(Indication) Time
t
llr
—4.4— µs
Link loss detected at receive
differential inputs to PHY signal
indication time for each of the
following:
1. For LED mode 01, Link LED output
changes from low (link-up) to high
(link-down).
2. INTRP pin asserts for link-down
status change.
TABLE 6-1: ELECTRICAL CHARACTERISTICS (CONTINUED)
Parameters Symbol Min. Typ. Max. Units Note