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
KSZ8081RNA/RND
DS00002199A-page 40 2016 Microchip Technology Inc.
7.3 MDC/MDIO Timing
FIGURE 7-4: MDC/MDIO TIMING
TABLE 7-4: MDC/MDIO TIMING PARAMETERS
Parameter Description Min. Typ. Max. Units
fc MDC Clock Frequency — 2.5 10 MHz
t
P
MDC period — 400 — ns
t
MD1
MDIO (PHY input) setup to rising edge of MDC 10 — — ns
t
MD2
MDIO (PHY input) hold from rising edge of MDC 4 — — ns
t
MD3
MDIO (PHY output) delay from rising edge of MDC 5 222 — ns
t
MD1
VALID
DATA
MDIO
(PHY INPUT)
VALID
DATA
MDC
t
MD2
MDIO
(PHY OUTPUT)
VALID
DATA
t
MD3
t
P