EVB8720 SMSC, EVB8720 Datasheet - Page 4

• Manufacturer Part Number: EVB8720
• Description: Ethernet Modules & Development Tools LAN8720 Design BRD
• Manufacturer: SMSC

Specifications of EVB8720

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Revision 1.1 (05-24-10)
2.2
2.2.1
Connector
40-pin
(P1)
Configuration
The following sub-sections describe the various board features and configuration settings. A top view
of the EVB8720 is shown in
PHY Address Configuration
The EVB8720 allows the user to configure the default PHY address at power-up via the PHYAD[0]
configuration strap.
default, PHYAD[0] is configured to a value of “0”.
0 (Default)
PHYAD[0]
1
Testpoint
Testpoints
+3.3V
RMII
Table 2.1
Table 2.1 PHYAD[0] Resistor Configuration
Figure 2.1 Top View of the EVB8720
Testpoint
Button
VDDIO
Reset
Figure
details the proper configuration required for each PHY address value. By
USER MANUAL
2.1.
Depopulate
Testpoint
Testpoint
Populate
VDDCR
4
PHYAD[0] PULL-UP/DOWN RESISTORS
R24
+5V
LAN8720A
Integrated
Magnetics
RJ45 +
SMSC
EVB8720 Evaluation Board User Manual
Depopulate
Populate
R37
LINK/ACT
SPEED &
(integrated in
SMSC EVB8720
magjack)
LEDs