Cirrus Logic CS8952 - Manual (Page 17)

CS8952
CrystalLAN™ 100BASE-X and 10BASE-T Transceiver 17
DS206F1
SERIAL MANAGEMENT INTERFACE TIMING
Parameter Symbol Min Typ Max Unit
MDC Period t
p
60 - - ns
MDC Pulse Width t
WL,
t
WH
40 - 60 %
MDIO Setup to MDC (MDIO as input) t
MD1
10 - - ns
MDIO Hold after MDC (MDIO as input) t
MD2
10 - - ns
MDC to MDIO valid (MDIO as output) t
MD3
0 - 40 ns
MDC
MDIO
MDIO
Valid Data
DIRECTION:
IN or OUT of chip
IN
IN
OUT
t
MD1
t
MD2
t
MD3
Valid Data
Valid Data