有两个指标相当重要，一是部署实际物理连接所需要的电路面积，也就是PHY面积，二是它的功耗。相比HBM2...
GDDR性能很不错，但潜力不如HBM，如果拿相同容量的HBM2与GDDR对比，性能差不多，这样的对比就好比，只...
PHY Advanced clocking architecture minimizes clock jitter DFI PHY Independent Mode for initialization and training IEEE 1500 interface, Memory BIST feature, and loop-back function Designed for optimized interposer routing Pin programmable support for lane repair ...
The HBM3 OPHY utilizes state-of-the-art architecture in full custom analog mixed-signal design to overcome the problem of long-term impedance drift and clock phase drift, allowing impedance and clock phase updates without the need to interrupt data traffic. The programmable timing PHY boundary com...
2、卓越的功率效率- 通过利用 3D HCB 代替平面晶粒到晶粒 PHY,将晶粒到晶粒接口的功耗降低 10 倍。 3、减少延迟- 最大限度地减少 3D 堆栈内计算、内存和 I/O 组件之间的延迟。 4、紧凑的外形尺寸- 可实现更小的中介层和封装尺寸,从而节省成本并改善封装翘曲。
The HBM3 OPHY utilizes state-of-the-art architecture in full custom analog mixed-signal design to overcome the problem of long-term impedance drift and clock phase drift, allowing impedance and clock phase updates without the need to interrupt data traffic. The programmable timing PHY boundary com...
An HBM PHY can be verified at block level and test-chip level using this verification strategy. Some of the challenges and common issues mentioned will help in verification architecture planning and development. Most companies however are facing struggles with the verification of the HB...
The implementation scale of HBM2's PHY interface is not on the same level as the DDR interface; the connection density of HBM2 is much higher. From the perspective of transmission bit width, each layer of DRAM die has two 128-bit channels, and the total HBM memory with the height of ...
Key Rambus HBM Gen2 PHY product highlights include support for DRAM 2, 4 and 8 stack height, a DFI-style interface to the memory controller, 2.5D interposer connections between the PHY and DRAM, a validated memory controller interface, support for wafer-level and interposer testing, as well ...
At the system level, eye simulations of the IBIS-AMI model for both the PHY and DRAM have facilitated examinations of signal quality throughout the HBM4 channel. This analysis is instrumental in optimizing the signal transmission and ensuring robust performance across the memory subsystem. HBM4 Rea...