CrossLink Programming and Configuration Usage Guide
Technical Note
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FPGA-TN-02014-1.2
21
5.6.
TransFR Operation
CrossLink, like other Lattice FPGAs, provides for the TransFR™ capability. TransFR is described in
Interruption During Configuration Using TransFR Technology (TN1087)
is an example of how you can update bitstream in CrossLink by using the TransFR feature.
CrossLink
NVCM with
Golden Image
Configuration
SRAM
sys clock
Global Reset
SPI PROM with
New Image
System Board
Figure 5.3. Bitstream Update Using TransFR
The example assumes the golden image is stored in NVCM to initiate the system, and then uses SPI PROM as a resource
for image updates without disturbing the system.
on the next page shows the process flow for performing
this task.