MT2812

Programmable Baseband SoC

Overview

Metanoia’s MT2812 is a System on a Chip (SoC) that supports a wide range of wireless applications by converting multiple data formats to Ethernet medium. With a programmable modem that uses advanced DSP technology, dual RISC processors and integrated high speed data convertors, the MT2812 is ideal for converting packetized data to arbitrary wireless communication formats including 5G New Radio (5G NR).

The MT2812 SoC can be combined with the MT3812, Metanoia sub-6GHz RF transceivers and RF front end modules to build compact and highly flexible sub-6GHz 5G-NR Radio Units (RUs) systems. With most of the necessary building blocks provided by Metanoia, it is the most cost-effective and competitive solution to meet the needs of various market segments and operators in 5G network deployment.

Applications

The MT2812 SoC supports a scalable architecture which can help in building higher density applications by using multiple instances of the chip.

Target Market Segments

Sub-6GHz low density O-RAN RU market (1T1R up to 4T4R Low density RU)
Complete end-to-end solution for 5G RU, including Digital Front-End (DFE) for Low-PHY, fronthaul interface as specified by O-RAN and also interface to sub-6GHz RF chip like Metanoia MT3812.

Use Cases

These are examples systems that can be built using MT2812.

>> 2T2R with carrier aggregation (e.g. for CBRS band)
The occupied BW is typically up to 40 (4 x 10) MHz comprising one or more 5G TDD component carriers The instantaneous BW can be up to 150 MHz The DACs, on MT2812, operate at sampling frequencies up to 491.52 MSPS and support two TX IQ streams The ADCs, on MT2812, operate at sampling frequencies up to 245.76 MSPS and support two RX IQ streams DPD in the RU system can be supported to achieve TX power and performance requirements Multiple TX paths are periodically observed to track variations across temperature and environment changes
>> 4T4R with carrier aggregation (e.g. for CBRS band) The occupied BW is typically up to 40 (4 x 10) MHz comprising one or more 5G TDD component carriers The instantaneous BW can be up to 150 MHz per instance The DACs, on MT2812, operate at sampling frequencies up to 491.52 MSPS and support two TX IQ streams The ADCs, on MT2812, operate at sampling frequencies up to 245.76 MSPS and support two RX IQ streams DPD in the RU system can be supported to achieve TX power and performance requirements Multiple TX paths are periodically observed to track variations across temperature and environment changes
>> 2T2R O-RAN FR1 O-RU with 100 MHZ CBW The occupied BW is typically up to 100 MHz comprising one or more 5G TDD component carriers The instantaneous BW can be up to 100 MHz per instance The DACs, on MT2812, operate at 491.52 MSPS and support two TX IQ streams The ADCs, on MT2812, operate at 245.76 MSPS and support two RX IQ streams DPD in the RU system can be supported to achieve power and performance requirements Multiple TX paths are periodically observed to track variations across temperature and environment changes
>> 4T4R O-RAN FR1 O-RU with 100 MHZ CBW The occupied BW is typically up to 100 MHz comprising one or more 5G TDD component carriers The instantaneous BW can be up to 100 MHz per instance The DACs, on MT2812, operate at 491.52 MSPS and support two TX IQ streams The ADCs, on MT2812, operate at 245.76 MSPS and support two RX IQ streams DPD in the RU system can be supported to achieve TX power and performance requirements Multiple TX paths are periodically observed to track variations across temperature and environment changes

Specifications

The MT2812 is a cost-effective and competitive SoC that meets customers’ needs to buid 5G Radio Unit solutions for the 5G market. The features list includes the following items:

Two CPU Complex	e200z7 Core running up-to 625 MHz 32-bit PowerPC Book E compliant 64 kB Local Data Memory 16 kB Instruction Cache 16 kB Data Cache Memory Protection Unit (MPU) with 24-entry descriptor table Embedded Floating-point APU (EFPU2) supporting scalar and SIMD single-precision floating-point operations Signal Processing Extension (SPE2) APU supporting SIMD fixed-point operations, using the 64-bit General Purpose Register file Performance Monitor APU supporting execution profiling
Three VSPA3 16SP Complexes	16 Complex 32-bit float mac per cycle 64 Real 32-bit float mac per cycle 32 Complex 24-bit float mac per cycle 28 Real 24-bit float mac per cycle Special Arithmetic Unit (SAU) Forward Error Correction Unit 128 kB VCPU and 192 kB IPPU Data Memory DMA
2 MB On-Chip SRAM
High DMA with CRC
Security Offload	AES-256 crypto up to 2 Gbps
Interfaces	Integrated data converters 2T2R @ 100 MHz Up to 424 MSPS ADC x4 (RXI1, RXQ1, RXI2, RXQ2). Each pair of ADCs can be interleaved to give 848 MSPS effective Up to 848 MSPS DAC x4 (TXI1, TXQ1, TXI2, TXQ2) Timer outputs I2C Master and slave modes supported SPI interface with 2 Chip Selects FlexSPI supporting x4 serial NOR or NAND flash with 1 Chip Select GPIO 62550 Compatible 2-pin UART for debug console interface Light-Weight LVDS communication protocol
Network I/O	5 Gbps SGMII / SerDes and RGMII Ethernet management Interface IEEE 1588
Standard 5-pin JTAG
Time Base Generator	64-bit master counter Timing generation with timing advance and delay compensation
Other Features	Absolute +/- 10% maximum rating core and I/O voltage Supply voltages: 1.8 V,1.2 V, 0.9 V, 0.8 V Operating Temperature between -40 °C (Ta) ~ 105 °C (Tj) ESD Criteria – HBM with 2000 V with test method for ESD per MIL-STD-883G Method 3015.7 ESD Criteria – CDM with 500 V with test method for ESD per JESD22-C101-D. Latch up with 200 mA tolerance with test is based on JEDEC STANDARD EIA/JESD
16 nm FinFET technology, power consumption < 2.5 W, 8×8 mm FC-PBGA 164-pin package

Reference Design

The Metanoia 5G_RU_R2812_COM (also named Cobra Baseband board) is a 5G RU Sub-6Ghz reference design which use the MT2812 SoC, as Digital Front End chip. The Cobra baseband board has two QSS connectors to plug-in a card based on the MT3812 RFIC, Metanoia’s 5G Transceiver chip.

The Cobra Baseband board is the ideal test platform for both cutting-edge application development and out-of-the-box evaluation. Metanoia Cobra Reference design includes a Cobra Baseband board and associated Hardware Development Kit (HDK) and Software Development Kit (SDK). This Cobra Reference design accelerates time to market for OEMs and ODMs by leveraging reference design, software, and Open Radio Access Network (O-RAN) interoperability.