Artesyn ATCA-8310 Installation and Use (May 2014) - Manual (Page 365)

CPLD and FPGA
ATCA-8310 Installation and Use (6806800M72E) 365
8.2.3.13 SPP Persistent memory
Implementation similar to ATCA-F120
 HRESET_REQ to FPGA
 FPGA asserts interrupt to SPP
 Short delay to allow DDR3 to enter self-refresh
 FPGA asserts HRESET to SPP
8.2.3.14 SPI Interfaces DCM baseboard, DMC1, DMC2 and ARTM
SPI interfaces are used for register accesses to the corresponding FPGA devices. Implement a
similar SW interface as on ATCA-F120 for communication to the ARTM.
8.2.3.15 Serial Redirection
The CPLD and the Glue FPGA are used for serial redirection. The routing of the IPMC Debug
serial interface needs to work without payload power and is therefore implemented in the
CPLD.
The routing of GPP and SPP serial interfaces is done in the FPGA.
The TXD lines can be seen (where possible) on serial interface, which are not selected by the
IPMC. This allows to listen to serial interfaces even they are not selected.