LAN8810I-AKZE Datasheet, PDF (95/100 Pages) Microchip Technology – GMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support

5.5.7
GMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
SMI Timing
This section specifies the SMI timing of the device. Please refer to Section 3.4, "Serial Management
Interface (SMI)," on page 25 for additional details.
MDC
t_val
t_ohold
MDIO
(Data-Out)
t_clkp
t_clkh t_clkl
t_ohold
t_su t_ihold
MDIO
(Data-In)
Figure 5.9 SMI Timing
Table 5.18 SMI Timing Values
SYMBOL
t_clkp
t_clkh
t_clkl
t_val
t_ohold
t_su
t_ihold
DESCRIPTION
MDC period
MDC high time
MDC low time
MDIO (read from PHY) output valid from rising
edge of MDC
MDIO (read from PHY) output hold from rising
edge of MDC
MDIO (write to PHY) setup time to rising edge
of MDC
MDIO (write to PHY) input hold time after rising
edge of MDC
MIN
400
160 (80%)
160 (80%)
0
10
10
MAX
300
UNITS
ns
ns
ns
ns
NOTES
ns
ns
ns
SMSC LAN8810/LAN8810i
95
DATASHEET
Revision 1.0 (02-06-13)