LAN8187_06 Datasheet, PDF (61/72 Pages) SMSC Corporation – ±15kV ESD Protected MII/RMII Fast-Ethernet PHY with HP Auto-MDIX and SMSC flexPWRTM

±15kV ESD Protected MII/RMII Fast-Ethernet PHY with HP Auto-MDIX and SMSC flexPWR^TM
Datasheet
Table 6.8 10M RMII Receive Timing Values
PARAMETER
DESCRIPTION
T9.1
Rising edge of REF_CLK to
receive signals output valid
T9.2
Rising edge of REF_CLK to
receive signals output not valid
REF_CLK frequency
MIN TYP MAX UNITS
4
ns
2
ns
50
MHz
6.3.2.2 10M RMII Transmit Timing
NOTES
REF_CLK
TXD[1:0]
TX_EN
Valid Data
T10.1
T10.2
Figure 6.9 10M RMII Transmit Timing Diagram
Table 6.9 10M RMII Transmit Timing Values
PARAMETER
DESCRIPTION
MIN TYP MAX UNITS
T10.1
Transmit signals setup to
4
REF_CLK rising
T10.2
Transmit signals hold after
REF_CLK rising
ns
2
ns
NOTES
6.4
REF_CLK Timing
Table 6.10 REF_CLK Timing Values
PARAMETER
DESCRIPTION
REF_CLK frequency
REF_CLK Frequency Drift
REF_CLK Duty Cycle
REF_CLK Jitter
MIN TYP MAX UNITS
50
MHz
+/- 50 ppm
40
60
%
150
psec
NOTES
p-p – not RMS
SMSC LAN8187/LAN8187I
61
DATASHEET
Revision 1.0 (12-14-06)