lan8710a Standard Microsystems Corp., lan8710a Datasheet - Page 73

• Manufacturer Part Number: lan8710a
• Description: Small Footprint Mii/rmii 10/100 Ethernet Transceiver With Hp Auto-mdix And Flexpwr Technology
• Manufacturer: Standard Microsystems Corp.

Small Footprint MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR
Datasheet
SMSC LAN8710A/LAN8710Ai
5.5.5
SYMBOL
t
t
t
t
t
ohold
t
ihold
(REF_CLK)
clkp
clkh
oval
t
clkl
su
RXD[1:0]
CRS_DV
TXD[1:0]
CLKIN
RMII Interface Timing
Note 5.19 Timing was designed for system load between 10 pf and 25 pf.
TXEN
CLKIN period
CLKIN high time
CLKIN low time
RXD[1:0], CRS_DV output valid from rising
edge of CLKIN
RXD[1:0], CRS_DV output hold from rising edge
of CLKIN
TXD[1:0], TXEN setup time to rising edge of
CLKIN
TXD[1:0], TXEN input hold time after rising edge
of CLKIN
t
ihold
DESCRIPTION
t
ohold
Table 5.10 RMII Timing Values
t
su
Figure 5.6 RMII Timing
t
DATASHEET
t
ihold
oval
t
clkh
t
clkp
73
®
Technology
t
clkl
t
su
t
t
t
clkp
clkp
t
ihold
oval
MIN
3.0
4.0
1.5
20
*0.35
*0.35
t
t
clkp
clkp
MAX
14.0
*0.65
*0.65
t
t
ohold
ihold
UNITS
t
oval
Revision 1.2 (08-10-10)
ns
ns
ns
ns
ns
ns
ns
t
su
Note 5.19
Note 5.19
Note 5.19
Note 5.19
NOTES