lan9303m Standard Microsystems Corp., lan9303m Datasheet - Page 375

• Manufacturer Part Number: lan9303m
• Description: Small Form Factor Three Port 10/100 Managed Ethernet Switch With Dual Mii/rmii/turbo Mii
• Manufacturer: Standard Microsystems Corp.

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII
Datasheet
SMSC LAN9303M/LAN9303Mi
14.5.8
SYMBOL
Px_OUTD[1:0]
t
t
t
t
ohold
t
ihold
t
clkp
clkh
t
Px_OUTCLK
clkl
val
su
Px_IND[1:0]
Px_OUTDV
Px_INDV
(output)
RMII Interface Timing
This section specifies the RMII interface timing for Px_OUTCLK input and output modes. Please refer
to
Note 14.20 Timing was designed for system load between 10 pf and 25 pf.
P x _OUTCLK period
P x _OUTCLK high time
P x _OUTCLK low time
P x _OUTD[1:0], P x _OUTDV output valid from
rising edge of P x _OUTCLK
P x _OUTD[1:0], P x _OUTDV output hold from
rising edge of P x _OUTCLK
P x _IND[1:0], P x _INDV setup time to rising edge
of P x _INCLK
P x _IND[1:0], P x _INDV input hold time after
rising edge of P x _INCLK
Chapter 9, "MII Data Interfaces," on page 128
Table 14.17 RMII Px_OUTCLK Output Mode Timing Values
Figure 14.12 RMII Px_OUTCLK Output Mode Timing
DESCRIPTION
t
ihold
t
ohold
t
su
DATASHEET
t
t
ihold
val
t
clkh
375
t
clkp
t
for additional details.
clkl
t
su
t
t
clkp
clkp
MIN
t
2.0
4.0
1.5
20
t
ihold
*0.4
*0.4
val
t
t
clkp
clkp
MAX
14.0
*0.6
*0.6
t
t
ohold
ihold
UNITS
Revision 1.3 (08-27-09)
ns
ns
ns
ns
ns
ns
ns
t
val
t
su
Note 14.20
Note 14.20
Note 14.20
Note 14.20
NOTES