Local Multipoint Transport Protocol（LMTP）

LMTP v2 does not specify the bus width and the number of base address bits, that is, it applies to the case of [8/16/32] bits, but each device in the same transmission system must be consistent. By default, this protocol uses a 32-bit bus width and a 3-bit base address system as an example; LMTP v2 does not specify the transmission voltage level, but each device in the same transmission system must also be consistent.

LMTP v2 includes two parts: high-speed parallel line and serial configuration line. The serial configuration line is equivalent to the universal asynchronous transceiver UART, so this document mainly introduces the high-speed parallel line.

The high-speed devices with fixed configurations can use the high-speed parallel line alone, while the low-speed devices that do not require high-speed transmission can use the serial configuration line alone. LMTP v2 is especially suitable for the devices with multiple [MCU/APU+FPGA] architectures.