SMSC LAN8720i Manual De Usuario
Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
Revision 1.0 (05-28-09)
70
SMSC LAN8720/LAN8720i
DATASHEET
7.1.4
DC Characteristics - Input and Output Buffers
Table 7.6 RMII Bus Interface Signals
NAME
V
IH
(V)
V
IL
(V)
I
OH
I
OL
V
OL
(V)
V
OH
(V)
TXD0
0.68 * VDDIO
0.4 * VDDIO
TXD1
0.68 * VDDIO
0.4 * VDDIO
TXEN
0.68 * VDDIO
0.4 * VDDIO
TXCLK
-8 mA
+8 mA
+0.4
VDDIO – +0.4
RXD0/MODE0
-8 mA
+8 mA
+0.4
VDDIO – +0.4
RXD1/MODE1
-8 mA
+8 mA
+0.4
VDDIO – +0.4
RXER/PHYAD0
-8 mA
+8 mA
+0.4
VDDIO – +0.4
CRS_DV/MODE2
-8 mA
+8 mA
+0.4
VDDIO – +0.4
MDC
0.68 * VDDIO
0.4 * VDDIO
MDIO
0.68 * VDDIO
0.4 * VDDIO
-8 mA
+8 mA
+0.4
VDDIO – +0.4
nINT/REFCLKO
-8 mA
+8 mA
+0.4
3.6