EMEI is the third generation NVMe SSD controller independently developed by DERA and it is also DERA's first enterprise-class controller that supports PCIe 4.0.
EMEI further optimizes the technical architecture while maintaining the high performance, high reliability and large capacity. The computing power of the built-in CPU is enhanced and more acceleration engines are provided on the data path to ensure industry-leading data processing capabilities. Designed using 12nm process technology, it further reduces chip size and power consumption.
The EMEI controller supports NAND flash from all major manufacturers and is compatible with NVMe 2.0 protocols, including ZNS (Zoned Namespace). It implements performance isolation technology to improve product performance while giving the product good design flexibility. EMEI integrates DERA's self-developed LDPC error correction algorithm, supports end-to-end data protection, and includes built-in AES and SM2/SM3/SM4 algorithm engines, ensuring superior reliability and ultra-high performance for the product.
NVMe 2.0 compliance, support PCle Gen 4.0X4/Dual port
Support NVMe optional command and vendor specific command, realize customized firmware
Support mainstream NAND flash, support both ONFI and TOGGLE
512GB-32TB total raw-capacity
16 NAND channels, 1.8V/1.2V VCCQ, 1200MT/s I/O speed. Up to 16 NAND Dies per channel
Up to 7GB/s/ 5GB/s sequential read/ write bandwidth, up to 1.5M IOPS of 4KB random read
Dual channels 40bit DDR controller with ECC protection, supports DDR4/ DDR3/ LPDDR4/ LPDDR3, up to 32GB DRAM
4KB code length LDPC error correction algorithm
All internal RAM protected by ECC, whole end-to-end CRC data path protection
Support ZNS, implement performance isolation technology, and support PMR features
SPI NOR with ECC protection, multiple general interfaces: 5*UART, 2*I2C, 16*GPIO and 2*SPI