Knowledge Base Article
Which clock edge is used to launch or capture Active Serial (AS) signals in the Serial Flash Loader (SFL) IP ?
Description
When programming a Serial Configuration (EPCS) device, a Quad-Serial Configuration (EPCQ) device or an EPCQ-L Serial Configuration device using the Serial Flash Loader (SFL) IP, Active Serial (AS) signals from/to the FPGA are launched or captured at the following clock edge:
- nCS and ASDO (DATA0) from the FPGA are launched on the falling edge of DCLK.
- DATA (DATA1) to the FPGA is captured on the rising edge of DCLK.
For the overall timing relationship for AS configuration, refer to the respective device handbook or device datasheet.
Updated 3 months ago
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