EVB8187 Standard Microsystems (SMSC), EVB8187 Datasheet - Page 3

• Manufacturer Part Number: EVB8187
• Manufacturer: Standard Microsystems (SMSC)

Specifications of EVB8187

• Lead Free Status / Rohs Status: Supplier Unconfirmed

EVB8187 User Manual
SMSC EVB8187
2.1
2.1.1
2.2
†.actual board may vary.
P1 40pin MII
interface
Power
Configuration
Power is provided to the onboard +3.3v regulator by the +5v power coming from the MII connector P1.
Standby power of +5v can be supplied externally by the test point loop at TP3 with ground connected
to pin 20 of header J2.
Note: Standby power can also be applied at +3.3v to TP5 if the regulator VR2 is removed.
3.3 Volt Power Supply
The EVB8187 has an on-board step down DC-DC +3.3v power supply regulator (VR2) and uses the
+5v input from the MII.
This section gives an explanation to the configuration options available on the SMSC EVB8187.
MII interface test points
Test Points
Figure 1 Top View of the EVB8187
SMSC
LAN8187
www.smsc.com
3
Power supply
indicator LEDs
Reset Button
LED/PHYADDRESS
Configuration resistors
†
POE
Header
Magnetic
H1102 commercial temperature
H1188 Industrial temperature
access
RJ-45
Ethernet
Revision 0.7 (12-8-06)