LAN9303 Datasheet, PDF (355/366 Pages) SMSC Corporation – Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII
Datasheet
14.5.5 MII Interface Timing (PHY Mode)
This section specifies the MII interface input and output timing when in PHY mode. Please refer to
Chapter 9, "MII Data Interface," on page 121 for additional details.
P0_OUTCLK
(output)
t_clkp
t_clkh t_clkl
t_val
t_val
t_hold
P0_OUTD[3:0]
t_hold
t_val
P0_OUTDV
Figure 14.6 MII Output Timing (PHY Mode)
Table 14.11 MII Output Timing Values (PHY Mode)
SYMBOL
DESCRIPTION
t_clkp
P0_OUTCLK period
t_clkh
P0_OUTCLK high time
t_clkl
P0_OUTCLK low time
t_val
P0_OUTD[3:0], P0_OUTDV output valid from
rising edge of P0_OUTCLK
t_hold
P0_OUTD[3:0], P0_OUTDV output hold from
rising edge of P0_OUTCLK
MIN
40
t_clkp*0.4
t_clkp*0.4
MAX
t_clkp*0.6
t_clkp*0.6
28.0
UNITS NOTES
ns
ns
ns
ns Note 14.14
10.0
ns Note 14.14
Note 14.14 Timing was designed for system load between 10 pf and 25 pf.
SMSC LAN9303/LAN9303i
355
DATASHEET
Revision 1.3 (08-27-09)