SMSC EVB-LAN9730-MII, Руководство пользователя

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EVB-LAN9730-MII Evaluation Board User Manual
SMSC LAN9730 5 Revision 1.0 (10-14-11)
USER MANUAL
2.1.1 Jumpers
The following table details the jumper definitions and default settings for the EVB-LAN9730-MII.
Jumper 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 indicates an installed jumper. All jumper settings are
shown in their default state (self-powered, internal Ethernet PHY operation).
Table 2.1 Jumpers
JUMPER DESCRIPTION SETTINGS
JP1 External Host Reset Connect 1 2
IN: Connects J2 (external host reset
input) to JP5 for input to nRESET
OUT: Disconnects J2 (external host reset
input) to JP5 for input to nRESET
Note: JP5 must also be installed to
utilize an external host reset
input on J2.
JP2
+1.2 V Power Supply Select
( Note 2.1 )
1 2
(DNP)
IN: +1.2 V power supplied by an external
+1.2 V power source
OUT: +1.2 V power supplied by the
LAN9730’s internal regulator
JP4 Ethernet PHY Select
1 2 Selects external Ethernet PHY
2---3 Selects internal LAN9730 Ethernet PHY
JP5 External Reset Connect 1 2
IN: Connects external reset events
(S1, J1, J2) to nRESET
OUT: Disconnects external reset events
(S1, J1, J2) to nRESET
JP6
LED Connects
( Note 2.2 )
1---2
IN: Connects Ethernet Speed LED
indicator (T1 - Yellow)
OUT: Disconnects Ethernet Speed LED
indicator (T1 - Yellow)
3---4
IN: Connects Ethernet Link/Activity LED
indicator (T1 - Green)
OUT: Disconnects Ethernet Link/Activity
LED indicator (T1 - Green)
5---6
IN: Connects Ethernet Full Duplex LED
indicator (LED2)
OUT: Disconnects Ethernet Full Duplex
LED indicator (LED2)
JP7
EEPROM Chip Select
Connect
1---2
IN: Connects the LAN9730’s EECS pin to
the CS pin of the on-board EEPROM
OUT: Disconnects the LAN9730’s EECS
pin from the CS pin of the on-board
EEPROM
JP8 HSIC Slew Tune Boost Select
1 2
Selects 30% HSIC_DATA and
HSIC_STROBE slew rate boost
2---3
Selects no HSIC_DATA and
HSIC_STROBE slew rate boost