5731 - Crosslink: Which SPI mode does Crosslink use in Master SPI to configure from SPI Flash? I am referring to CPOL and CPHA conventions of the SPI specification.
5731 - Crosslink: Which SPI mode does Crosslink use in Master SPI to configure from SPI Flash? I am referring to CPOL and CPHA conventions of the SPI specification.
Crosslink uses CPOL=0 and CPHA= 0 in master SPI mode.
You can not use the Master SPI Mode(MSPI) to access the on-chip Flash memory. This mode is exclusively for SRAM memory configuration. You can use the MSPI port for programming the external SPI Flash device through JTAG mode. This provides a single ...
You can not configure the configuration SRAM memory directly with the Slave SPI Mode(SSPI), nor can you read back SRAM memory with the SSPI. But you can use the SSPI to configure the SRAM memory through a REFRESH instruction. The effect is the same ...
Description: MACHXO3 device share the same SPI SysConfig ports for both SSPI and MSPI configuration mode. The Configuration(CFG) MSPI is designed to be bus friendly, i.e. when it's not actively booting, all MSPI pins are tri-stated. It's possible to ...
When the NVCM of an iCE40 device has already been programmed, it can no longer be configured in Master SPI mode (SPI serial Flash PROM). However, Slave SPI is still possible which could be an external device, such as a processor, microcontroller, or ...
The Crosslink did not support full background programming. It is only supporting partial background re-configuration using the SEI (Software Error Injection) or read-back features. The statement in the document means that if you persisted with the ...