Datasheet

High Performance Single Chip Low Power 10/100 Ethernet Physical Layer Transceiver (PHY)
Datasheet
Revision 0.8 (06-12-08) 50 SMSC LAN83C185
DATASHEET
Chapter 6 Electrical Characteristics
The timing diagrams and limits in this section define the requirements placed on the external signals
of the Phy.
6.1 Serial Management Interface (SMI) Timing
PARAMETER DESCRIPTION MIN TYP MAX UNITS NOTES
T1.1 MDC frequency 2.5 MHz
T1.2 MDC to MDIO (Write) delay 0 300 ns
T1.3 MDIO (Read) to MDC setup 10 ns
T1.4 MDIO (Read) to MDC hold 10 ns
MDC
MDIO
(Write)
MDIO
(Read)
T1.1
T1.3
T1.2
Valid Data
Valid Data
T1.4