STR91XFA STMICROELECTRONICS [STMicroelectronics], STR91XFA Datasheet - Page 66

• Manufacturer Part Number: STR91XFA
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Electrical characteristics
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Table 30.
Ethernet MII transmit timings
Figure 21. Ethernet MII transmit timing diagram
Table 31.
MII_TX_CLK
MII_TX_EN
MII_CRS
MII_COL
MII_TXD
Symbol
Symbol
1
2
3
1
2
3
4
5
6
7
8
Ethernet MII management timing table
Ethernet MII transmit timing table
MDIO delay from rising
edge of MDC
MDIO setup time to rising
edge of MDC
MDIO hold time from rising
edge of MDC
MII_TX_CLK high to
MII_TX_EN valid
MII_TX_CLK high to
MII_TX_EN invalid
MII_CRS valid to
MII_TX_CLK high
MII_TX_CLK high to
MII_CRS invalid
MII_COL valid to
MII_TX_CLK high
MII_TX_CLK high to
MII_COL invalid
MII_TX_CLK high to
MII_TXD valid
MII_TXCLK high to
MII_TXD invalid
Parameter
Parameter
1
7
t
T
T
t
T
T
T
T
T
t
T
c
VAL
VAL
3
5
su
h
inval
su
h
su
h
inval
(MDIO)
Symbol
(MII_CRS)
(MII_COL)
(MDIO)
(MII_CRS)
(MII_COL)
(MDIO)
(MII_TX_EN)
(MII_TXD)
(MII_TX_EN)
(MII_TXD
Symbol
-2.03
2.70
Min
8
2
0.61
0.00
0.81
0.00
Min
Value
Value
6
Max
2.83
Max
4.20
4.86
5.02
5.02
4
STR91xFA
Unit
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns