117
Table 31. MII signal clocking
Mode
Direction
Pin name
In/Out
Note
PHY
TX
P_TXD[3:0]/M_RXD[3:0],
In
Clocked in by
P_TX_EN/M_RX_DV,
P_TX_CLK/M_RX_CLK
P_TX_ER/M_RX_ER
P_TX_CLK/M_RX_CLK
Out
RX
P_RXD[3:0]/M_TXD[3:0],
Out
Clocked out by MII_RX.
P_RX_DV/M_TX_EN,
P_RX_ER/M_TX_ER
P_RX_CLK/M_TX_CLK
Out
Inverted version of MII_RX.
MAC
TX
P_RXD[3:0]/M_TXD[3:0],
Out
Clocked out by
P_RX_DV/M_TX_EN,
P_RX_CLK/M_TX_CLK.
P_RX_ER/M_TX_ER
Max 25 ns round-trip delay.
P_RX_CLK/M_TX_CLK
In
RX
P_TXD[3:0]/M_RXD[3:0],
In
Clocked in by
P_TX_EN/M_RX_DV,
P_TX_CLK/M_RX_CLK
P_TX_ER/M_RX_ER
P_TX_CLK/M_RX_CLK
P_TX_CLK/M_RX_CLK
In
Label
Parameter
Min
Max
Units
MDC
MDC frequency
-
2.5
MHz
t
STASU
Setup MDIO to MDC high, STA driving MDIO
10
ns
t
STAHD
Hold MDIO from MDC high, STA driving MDIO
10
ns
t
PHYVL
MDC high to MDIO valid, HDMP-3001 driving MDIO
300
ns
t
MINHL
MDC minimum high and low time (duty cycle)
160
-
ns
8.12 MDIO Port Timing
The MDIO port timing of HDMP-3001 conforms to the IEEE 802.3 specification, clause 22.