Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
Chapter 7 Datasheet Revision History
Table 7.1 Customer Revision History
REVISION LEVEL & DATE
SECTION/FIGURE/ENTRY
CORRECTION
Rev. 1.4
(08-23-12)
Section 4.2.2, "Basic Status
Register," on page 50
Updated definitions of bits 10:8.
Section 4.2.11, "Special
Control/Status Indications
Register," on page 59
Updated bit 11 definition.
Rev. 1.3
(03-12-12)
Company disclaimer on
page 2
Removed company address and phone numbers.
Rev. 1.3
(04-20-11)
Table 5.9, “RMII Timing
Values (REF_CLK Out
Mode),” on page 71
Updated toval maximum value from 10.0ns to
5.0ns.
Table 2.7, “Power Pins,” on
page 14
Updated VDDCR pin note to include requirement
of 1uF and 470pF decoupling capacitors in parallel
to ground on the VDDCR pin.
Figure 3.16 Power Supply
Diagram (1.2V Supplied by
Internal Regulator) on
Updated diagrams to include 1uF and 470pF
decoupling capacitors on the VDDCR pin.
page 43 and Figure 3.16
Power Supply Diagram
(1.2V Supplied by Internal
Regulator) on page 43
Rev. 1.2 (11-10-10)
Section 5.5.4, "RMII
Interface Timing," on
page 71
Updated diagrams and tables to include RXER.
Section 3.7.4.2, "REF_CLK
Out Mode," on page 34
Added timing note in Section 3.7.4.2, "REF_CLK
Out Mode"
Section 5.5.4, "RMII
Interface Timing," on
page 71
Corrected signal names on RMII timing diagrams
and tables. Updated Table 5.9 toval, tohold, tsu, and
tihold with 10 ns, 1.4 ns, 7.0 ns, and 2.0 ns,
respectively.
Table 5.8, “Power-On nRST
& Configuration Strap
Timing Values,” on page 70
Updated todad description: “Output drive after
nRST deassertion”
Rev. 1.1 (04-09-10)
Section 5.1, "Absolute
Maximum Ratings*"
Modified “HBM ESD Performance by adding “per
JEDEC JESD22-A114” and changed “+/-5kV” to
“Class 3A”
Section 5.3, "Power
Consumption," on page 64
Corrected typo in the current consumption table
row title: “100BASE-TX /W TRAFFIC”
Section 5.3, "Power
Consumption," on page 64
Corrected typo in note regarding Ethernet
component current:
“The Ethernet component current is typically 41mA
in 100BASE-TX mode and 100mA in 10BASE-T
mode, independent of the 2.5V or 3.3V supply rail
of the transformer.”
Revision 1.4 (08-23-12)
78
SMSC LAN8720A/LAN8720Ai
DATASHEET
SMSC [ SMSC CORPORATION ]
