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ispLEVER 7.0 SP1 and SP2 - PLL Connectivity Updates


ispLEVER 5.0Two database updates for PLL connectivity for the LatticeECP2 and LatticeECP2M FPGA families are available for users of ispLEVER 7.0 + Service Pack 1 (SP1) and/or Service Pack 2 (SP2). Please read below for more information on these updates.

You must install ispLEVER 7.0 SP1 prior to installing these updates.

If you have already installed these updates with ispLEVER 7.0 SP1, and subsequently install SP2, you do not need to re-install these updates.

To download the update files, click on the "Downloadable Software" link at the left of this page.

LatticeECP2 Update

Purpose

This is an update to PLL routing connectivity for all members of the LatticeECP2 device family.

Who should get this update

Users wanting to utilize Dynamic Clock Switching (DCS) between two CLKOK signals from two different PLL’s on the same side of a device or when more than 6 primary clocks are used in a design.

Design considerations if you choose not to update

Ensure the PLL’s used are not on the same side of the chip when switching between two CLKOK signals or use different PLL outputs, such as CLKOS or CLKOP.

LatticeECP2M Update

Purpose

This is an update to PLL routing connectivity for the LatticeECP2M-50, ECP2M-70, and ECP2M-100 devices.

Who should get this update

Any design using the uppermost right and/or uppermost left PLLs in any of these devices.


LatticeECP2M-50: Sites SPLL_R10C1 and SPLL_R10C101
LatticeECP2M-70: Sites SPLL_R10C1 and SPLL_R10C110
LatticeECP2M-100: Sites SPLL_R10C1 and SPLL_R10C128

Note: There are several ways to determine the PLL sites that have been used/selected in your design using Design Planner or the EPIC device editor.

Design considerations if you choose not to update

Without the update, you need to Prohibit PAR from using these PLLs. You can do this by setting the following Preferences in your design:

ECP2M – 50
PROHIBIT SITE "SPLL_R10C1" ; # to prohibit uppermost left SPLL from being used
PROHIBIT SITE "SPLL_R10C101" ; # to prohibit uppermost right SPLL from being used

ECP2M-70
PROHIBIT SITE "SPLL_R10C1" ; # to prohibit uppermost left SPLL from being used
PROHIBIT SITE "SPLL_R10C110" ; # to prohibit uppermost right SPLL from being used

ECP2M-100
PROHIBIT SITE "SPLL_R10C1" ; # to prohibit uppermost left SPLL from being used
PROHIBIT SITE "SPLL_R10C128" ; # to prohibit uppermost right SPLL from being used

If you must use these PLLs in your design for any reason, this update is required.