Intel® Cyclone® 10 LP Core Fabric and General Purpose I/Os Handbook
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6.1.2. Passive Serial Configuration
The PS configuration scheme uses an external host.
You can use external hosts such as a MAX® V device, microprocessor with flash memory, or a download cable.
In the PS scheme, an external host controls the configuration. Configuration data is clocked into the target Intel® Cyclone® 10 LP device through DATA[0] at each rising edge of DCLK.
PS Configuration Connection Guidelines
Consider the following guidelines when you configure the Intel® Cyclone® 10 LP devices:
- Connect the pull-up resistors of the FPGA device to the VCC supply of the bank in which the pin resides.
- You can leave the nCEO pin unconnected or use it as a user I/O pin when it does not feed the nCE pin of another device.
- The MSEL pin settings vary for different configuration voltage standards and POR time.
- The nCSO and ASDO pins are dual-purpose I/O pins. The ASDO pin also functions as the DATA[1] pin in FPP mode.
- For multi-device configurations, connect the pull-up resistor of the slave FPGA device(s) to the VCCIO supply voltage of I/O bank in which the nCE pin resides.
- Connect the repeater buffers between the master and slave devices of the FPGA device for DATA[0] and DCLK. All I/O inputs must maintain a maximum AC voltage of 4.1 V. The output resistance of the repeater buffers must fit the maximum overshoot equation.
- The 50 Ω series resistors are optional if the 3.3 V configuration voltage standard is applied. For optimal signal integrity, connect these 50 Ω series resistors if the 2.5 V or 3.0 V configuration voltage standard is applied.