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3.6.1
Signal Description
Signal Name
Description
FLASH_CLK_FPGA_CCLK
Must be high impedance during configuration and operation
FLASH_DO_FPGA_DIN
Must be high impedance during configuration and operation
FPGA_INIT#
Is pulled low by the FPGA if any CRC error occurs during the configuration; it
may be used as an input to delay the start of the FPGA configuration.
FPGA_DONE
Goes high after a successful FPGA configuration
FPGA_PROG#
When pulled low, the FPGA configuration sequence is cleared and all pins are
tri-stated. The rising edge of FPGA_PROG# initializes the configuration.
FPGA_MODE
Must be pulled low during configuration
FLASH_DI
Must be high impedance during configuration and operation
FLASH_CS#
Must be high impedance during configuration and operation
Table 31: Master Serial Configuration - Signals Description
3.7
Slave Serial Configuration
In the slave serial configuration mode, the bitstream must be transmitted from an external device to the
FPGA. The configuration pins of the FPGA are connected directly to the module connector, allowing the
configuration of the FPGA from a microcontroller or another SPI capable device. For more information on
the configuration modes, please refer to the 7 Series FPGAs Configuration User Guide [17].
For slave serial configuration the bitstream generation option “SPI_buswidth” must be set to 1 in the Xilinx
tools.
3.7.1
Signal Description
Signal Name
Description
FLASH_CLK_FPGA_CCLK
Configuration clock
FLASH_DO_FPGA_DIN
Configuration data
FPGA_INIT#
Is pulled low by the FPGA if any CRC error occurs during the configuration; it
may be used as an input to delay the start of the FPGA configuration.
FPGA_DONE
Goes high after a successful FPGA configuration
FPGA_PROG#
When pulled low, the FPGA configuration sequence is cleared and all pins are
tri-stated. The rising edge of FPGA_PROG# initializes the configuration.
FPGA_MODE
Must be pulled high or left open during configuration
Table 32: Slave Serial Configuration - Signals Description
D-0000-430-002
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Version 06, 25.07.2019