78Q2120C
10/100BASE-TX
Transceiver
MDIO Interface Input Timing
CHARACTERISTICS
SYMBOL
MIOSU
MIOHD
Fmax
CONDITIONS
MIN
10
NOM
MAX
UNIT
ns
Setup Time: MDC to MDIO
Hold Time: MDC to MDIO
Max Frequency: MDC
10
ns
25
MHz
MDC
MIO
HD
MIO
SU
MDIO
MDIO as an Input to the 78Q2120C
MDIO Interface Output Timing
CHARACTERISTICS
MDC to MDIO data delay
SYMBOL
MC2D
CONDITIONS
MIN
NOM
MAX
30
UNIT
ns
MDIO output from high Z to
driven after MDC
MCZ2D
30
ns
MDIO output from driven to
high Z after MDC
MCD2Z
30
ns
MDC
MCZ2D
MC2D
MCD2Z
MDIO
MDIO as an Output from the 78Q2120C
Page: 24 of 35
© 2009 Teridian Semiconductor Corporation
Rev 1.3
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
