LAN8720A-CP-TR Standard Microsystems (SMSC), LAN8720A-CP-TR Datasheet - Page 73

• Manufacturer Part Number: LAN8720A-CP-TR
• Description: SMALL FOOTPRINT RMII 10/100 ETHERNET TR
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN8720A-CP-TR

• Number Of Receivers: 1
• Protocols Supported: IEEE 802.3
• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Package Type: QFN
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Operating Temperature (max): 85C
• Operating Temperature (min): 0C
• Lead Free Status / Rohs Status: Compliant

Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
SMSC LAN8720/LAN8720i
5.5.5
SYMBOL
t
t
(Data-Out)
t
t
ohold
MDIO
MDIO
t
ihold
t
clkp
clkh
t
(Data-In)
clkl
val
su
MDC
SMI Timing
This section specifies the SMI timing of the device. Please refer to
Interface (SMI)," on page 28
t
ohold
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
t
val
DESCRIPTION
Table 5.12 SMI Timing Values
for additional details.
t
ohold
t
Figure 5.6 SMI Timing
clkh
DATASHEET
t
clkp
t
73
clkl
160 (80%)
160 (80%)
MIN
400
10
10
0
t
su
Section 3.5, "Serial Management
MAX
300
t
ihold
UNITS
Revision 1.0 (12-09-09)
ns
ns
ns
ns
ns
ns
ns
NOTES