LAN9303MI-AKZE Datasheet, PDF (378/386 Pages) SMSC Corporation – Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII
Datasheet
14.5.8
RMII Interface Timing
This section specifies the RMII interface timing for Px_OUTCLK input and output modes. Please refer
to Chapter 9, "MII Data Interfaces," on page 129 for additional details.
Px_OUTCLK
(output)
t_clkp
t_clkh t_clkl
t_val
t_val
t_ohold
Px_OUTD[1:0]
Px_OUTDV
t_ohold
t_su t_ihold
t_su t_ihold
t_val
t_ihold
Px_IND[1:0]
t_ihold
t_su
Px_INDV
Figure 14.12 RMII Px_OUTCLK Output Mode Timing
Table 14.17 RMII Px_OUTCLK Output Mode Timing Values
SYMBOL
DESCRIPTION
t_clkp
t_clkh
t_clkl
t_val
t_ohold
t_su
t_ihold
Px_OUTCLK period
Px_OUTCLK high time
Px_OUTCLK low time
Px_OUTD[1:0], Px_OUTDV output valid from
rising edge of Px_OUTCLK
Px_OUTD[1:0], Px_OUTDV output hold from
rising edge of Px_OUTCLK
Px_IND[1:0], Px_INDV setup time to rising edge
of Px_INCLK
Px_IND[1:0], Px_INDV input hold time after
rising edge of Px_INCLK
MIN
20
t_clkp*0.4
t_clkp*0.4
2.0
4.0
1.5
MAX
t_clkp*0.6
t_clkp*0.6
14.0
UNITS NOTES
ns
ns
ns
ns Note 14.20
ns Note 14.20
ns Note 14.20
ns Note 14.20
Revision 1.5 (07-08-11)
378
DATASHEET
SMSC LAN9303M/LAN9303Mi