LAN9512 Evaluation Board User Manual
Revision 1.0 (12-04-12)
USER MANUAL SMSC LAN9512
4
2.1 Jumpers
Table 2.1 describes the default settings and jumper descriptions for the EVB9512. These defaults are
the recommended configurations for evaluation of the LAN9512. These settings may be changed as
needed, however, any deviation from the default settings should be approached with care and
knowledge of the schematics and datasheet. An incorrect jumper setting may disable the board.
Note: A dashed line in the Settings column of Tabl e 2. 1 indicates the board’s default jumper setting.
2.2 LEDs
Table 2.1 Jumpers
JUMPER DESCRIPTION SETTINGS
JP1 5 volt select jumper
1 2 Populate when bus-powered
2---3
Populate when self-powered
(+5V power brick must be attached)
JP9 Auto-MDIX jumper
1---2 Auto-MDIX enabled
2 3 Auto-MDIX disabled
JP22 VBUS_DET jumper
1 2 Populate when bus-powered
2---3 Populate when self-powered
JP27 CLK24_EN jumper
1 2 Populate to enable 24MHz CLK24_OUT
2---3 Populate to disable 24MHz CLK24_OUT
Table 2.2 LEDs
REFERENCE COLOR INDICATION
LED3 Green +3.3V power active
LED4 Green Power on downstream port 2
LED5 Green Power on downstream port 3
LED8 Green Full duplex on Ethernet port
T1 Green Link/activity on Ethernet port
T1 Yellow Speed on Ethernet port
