78Q2123/78Q2133 MicroPHY™
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 78Q2123/78Q2133
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 78Q2123/78Q2133
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© 2009 Teridian Semiconductor Corporation
Rev 1.5