High Performance Single Chip Low Power 10/100 Ethernet Physical Layer Transceiver (PHY)
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
MDC
T1.1
MDIO
T1.2
(Write)
Valid Data
MDIO
T1.3
T1.4
(Read)
Valid Data
PARAMETER
DESCRIPTION
MDC frequency
MIN
TYP
MAX
2.5
300
UNITS
NOTES
T1.1
T1.2
T1.3
T1.4
MHz
ns
MDC to MDIO (Write) delay
MDIO (Read) to MDC setup
MDIO (Read) to MDC hold
0
10
10
ns
ns
SMSC LAN83C185
Rev. 0.6 (12-12-03)
DATA4S7HEET