The LVDS Tunneling Protocol & Interface (LTPI) IP v3.0 was developed to work in accordance with LTPI Specification r 1.2, v 1.0RC3 for use with the Datacenter – Secure Control Module (DC-SCM) r 2.2, v 1.0RC2 systems. In a data center server context, the primary use case for LTPI is for the transport of these low-speed I/O channels between the Secure Control Module (SCM) which is responsible for card management and the Host Processor Module (HPM). LTPI enables the pins used by these low-speed channels on the DC-SCI connector to be reallocated for other purposes. This in turn enable new interfaces/features to be supported between the SCM and HPM.
The LTPI interface can be implemented with a pair of FPGAs for configurations with typical server Board Management Controller (BMC) devices:
- Host Processor Module (HPM) FPGA
- Provides a bridging of local HPM interfaces to LTPI.
- Secure Controller Module (SCM) FPGA
- Provides a bridging of local SCM interfaces to LTPI.