A 24-Gb/s/Pin 8-Gb GDDR6 With a Half-Rate Daisy-Chain-Based Clocking Architecture and I/O Circuitry for Low-Noise Operation
In: IEEE Journal of Solid-State Circuits, Jg. 57 (2022), S. 212-223
Online
unknown
Zugriff:
The demand for high-performance graphics systems used for artificial intelligence, cloud game, and virtual reality continues to grow; this trend requires graphics systems to achieve ever higher bandwidths. This article proposes a GDDR6 dynamic random access memory (DRAM) with a half-rate clocking architecture and optimized receiver and transmitter to improve high-speed operation. Furthermore, this article adopts a staggered PAD using the redistribution layer (RDL) to reduce the distance to four PADs; it enables the mitigation of bandwidth limitation of half-rate clocking, a lower phase mismatch, and a reduced propagation delay. The proposed half-rate clocking-based GDDR6 DRAM achieves 24 Gb/s/pin on a 1.35-V DRAM process. Also, the power-supply-induced-jitter (PSIJ) value is improved from 9.97 to 3.22 ps, compared to a GDDR6 design using a quarter-rate clocking. In addition, the phase mismatch of the proposed clock distribution network (CDN) is reduced compared to the conventional CDN, resulting in an improvement of the 3-σ value of the phase skew from 4.16 to 2.25 ps.
Titel: |
A 24-Gb/s/Pin 8-Gb GDDR6 With a Half-Rate Daisy-Chain-Based Clocking Architecture and I/O Circuitry for Low-Noise Operation
|
---|---|
Autor/in / Beteiligte Person: | Jung, Hae-Kang ; Yang, Jaehyeok ; Kang, Ji-Hyo ; Cho, Yeongmuk ; Cha, Seon-Yong ; Cha, Jae-Hoon ; Jeong, Sera ; Park, Minsoo ; Kim, Youngtaek ; Kim, Hyungsoo ; Kim, Hongdeuk ; Chae, Joo-Hyung ; Chun, Junhyun ; Kim, Kyung-hoon ; Ji, Junghwan ; Kim, Dong-Hyun ; Lee, Sang-Kwon ; Park, Sijun ; Byeon, Sangyeon ; Lee, Gangsik ; Cho, Joo-Hwan ; Kim, Sunho ; Jang, Ji-Eun ; Kim, Bo-Ram |
Link: | |
Zeitschrift: | IEEE Journal of Solid-State Circuits, Jg. 57 (2022), S. 212-223 |
Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 2022 |
Medientyp: | unknown |
ISSN: | 1558-173X (print) ; 0018-9200 (print) |
DOI: | 10.1109/jssc.2021.3114205 |
Schlagwort: |
|
Sonstiges: |
|