Process variation tolerant all-digital multiphase DLL for DDR3 interface. - Heechai Kang; Kyungho Ryu; Donghwan Lee; Won Lee; SuHo Kim; JongRyun Choi; Seong-Ook Jung (CICC, 2010)

Process Variation Tolerant All-Digital 90° Phase Shift DLL for DDR3 Interface. - Heechai Kang; Kyungho Ryu; Dong-Hoon Jung; Donghwan Lee; Won Lee; SuHo Kim; JongRyun Choi; Seong-Ook Jung (IEEE Trans. Circuits Syst. I Regul. Pap., 2012)

23.6 A 0.6V 4.266Gb/s/pin LPDDR4X interface with auto-DQS cleaning and write-VWM training for memory controller. - Soo-Min Lee; Jihun Oh; Jinho Choi; Seokkyun Ko; Daero Kim; Kyounghoi Koo; JongRyun Choi; Yoonjee Nam; Sangsoo Park; Hyungkweon Lee; Eunsu Kim; Sukhyun Jung; et al. (ISSCC, 2017)