Rainbow Electronics W90P710CDG User Manual
Page 520
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W90P710CD/W90P710CDG
Publication Release Date: September 19, 2006
- 521 -
Revision B2
7.3.4 EMC RMII AC Characteristics
The signal timing characteristics conforms to the guidelines specified in IEEE Std. 802.3.
PHY_REFCLK
PHY_TXEN
PHY_TXD[1:0]
T
TXO
valid data
T
TXH
T
FREQ
T
RXS
T
RXH
PHY_RXERR
PHY_RXD[1:0]
PHY_CRSDV
T
DUTY
valid data
SYMBOL DESCRIPTION MIN
TYP
MAX
UNIT
T
FREQ
RMII reference clock frequency
50
MHz
T
DUTY
RMII clock duty
35%
50%
65%
ns
T
TXO
Transmit data output delay
5
-
15
ns
T
TXH
Transmit data hold time
2
-
-
ns
T
RXS
Receive data setup time
4
-
-
ns
T
RXH
Receive data hold time
2
-
-
ns
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