Title
A 12.4TOPS/W, 20% Less Gate Count Bidirectional Phase Domain MAC Circuit for DNN Inference Applications
Abstract
A small gate count 8 bit bidirectional phase domain MAC (PMAC) circuit is proposed for DNN inference applications targeting IoT edge. PMAC consumes significantly smaller power than standard fully digital MACs, owing to its efficient analog accumulation nature based on Gated-Ring-Oscillator (GRO). Compared with the previous first PoC of PMAC, the bidirectional architecture proposed in this paper achieves 20% less gate count, which is comparable with fully digital MACs, and relaxes system design constraints by eliminating phase error originating in leakage current. Asynchronous readout technique and 2-step DTC for the better system throughput and compact implementation, respectively, are presented for the first time. The PMAC achieves peak efficiency of 12.4 TOPS/W in 28 nm CMOS.
Year
DOI
Venue
2018
10.1109/ASSCC.2018.8579253
2018 IEEE Asian Solid-State Circuits Conference (A-SSCC)
Keywords
Field
DocType
DNN accelerator,Phase Domain MAC,GRO
Asynchronous communication,Logic gate,Gate count,PMAC,Leakage (electronics),Computer science,8-bit,Electronic engineering,CMOS,Throughput
Conference
ISBN
Citations 
PageRank 
978-1-5386-6414-8
0
0.34
References 
Authors
1
5
Name
Order
Citations
PageRank
Yosuke Toyama100.34
Kentaro Yoshioka2549.04
Koichiro Ban3437.32
Akihide Sai4208.25
Kohei Onizuka5123.64