Lattice Semiconductor MachXO, Руководство пользователя

Страница: 13 / 25

13
MachXO Standard Evaluation Board
Lattice Semiconductor Revisions 001 & 002 User’s Guide
RJ-45 Connection
The west edge of the board provides a place to insert an RJ-45 connector. This connector is not installed at the fac-
tory. The traces to the RJ-45 connector have the same resistor network scheme as shown in Figure 5, described
above. The traces are 50 ohm impedance, and on larger MachXO devices are connected to true LVDS I/O.
Mictor Header
The left-side I/Os on the MachXO which are not used for the RJ-45 and small prototype test points are routed to a
AMP/Tyco Mictor connector for additional off-board expansion. This connector can be mounted on the bottom side
of the board. The connector is not populated by the manufacturer. Review the schematic for the board to determine
which I/O pins are routed to the Mictor connector.
Ordering Information
Technical Support Assistance
Hotline: 1-800-LATTICE (North America)
+1-503-268-8001 (Outside North America)
e-mail: techsupport@latticesemi.com
Internet: www.latticesemi.com
© 2007 Lattice Semiconductor Corp. All Lattice trademarks, registered trademarks, patents, and disclaimers are as
listed at www.latticesemi.com/legal. All other brand or product names are trademarks or registered trademarks of
their respective holders. The specifications and information herein are subject to change without notice.
Revision History
Description Ordering Part Number
China RoHS Environment-
Friendly Use Period (EFUP)
MachXO 2280C Evaluation Board - Standard LCMXO2280C-L-EV
MachXO 640C Evaluation Board - Standard LCMXO640C-L-EV
ispLEVER Base with MachXO 2280 Standard Development Kit LS-X2280-BASE-PC-N
Date Version Change Summary
June 2006 01.0 Initial release.
September2006 01.1 Updated schematic in Appendix A.
February 2007 01.2 Updated Switch Assignments table.
Updated ispClock Configuration section.
March 2007 01.3 Added Ordering Information section.
April 2007 01.4 Added important information for proper connection of ispDOWNLOAD
(Programming) Cables.
June 2007 01.5 Updated Features bullets and General Description section to indicate
the power supply will operate between 5V and 20V, instead of 5V to
28V.
March 2008 01.6 Changed document title from “MachXO Standard Evaluation Board
Revision 001 User’s Guide” to “MachXO Standard Evaluation Board
Revision 001 & 002 User’s Guide”.
10