5 ms·

Itsy-Chipsy: Make your own $100 ASIC

5 points by blacksmythe 8y ago

tlb 8y ago
Using a 180 nm process, this isn't going to outperform an FPGA at 14 nm either on clock rate or power. And the iteration time will be several weeks instead of minutes. So I'm curious what use cases this will have -- maybe something that doesn't fit into the FPGA mold like asynchronous logic?
- blacksmythe 8y ago
  Depends on clock rate. This is not for building a microprocessor. Static power on 180 nm circuit should be negligible, which won't be the case on a 14 nm FPGA.
- ekroa 8y ago
  Guessing following cases: 1) Education 2) Synthesized analog functions: PLL, ADC, DAC, Filters, etc. 3) Do your own standard cells using a new kind of logic 4) Proof-of-concept for analog circuitry
- deepnotderp 8y ago
  Prototyping of novel circuits (e.g. async), 3D integration, education, etc. It's a really useful thing to be honest.
ckdur 8y ago
Since all circuitry from different projects will be inside a single chip, and all circuits are accessible through the same platform, how do you plan to offer digital privilege access/circuitry protrction to each chip? I mean, random data can be push to jtag (for example) and get results for every circuit embedded inside this chip.
- ekroa 8y ago
  We've been thinking on this. It is definitely a though issue but it is not different from the opportunity of decapping a commercial chip and try to get IP from there. There a three options we have been thinking: 1. Obfuscated register mapping with a synced TRNG, 2. A light cipher. 3. Physical and structural logic obfuscation. The area overhead is an issue and we are trying to gather some results from an internal research going on to see feasibility.
russellmzauner 8y ago
Who cares about performance as long as it works? Pretty sure you're all missing the point. The point is that a kid working fast food during the day and OpenChip/OpenCores enthusiast at night could build whatever they're thinking of over summer vacation. New businesses are no longer started in the garage - they're started in the kitchen.

5 points by blacksmythe 8y ago

tlb 8y ago

Using a 180 nm process, this isn't going to outperform an FPGA at 14 nm either on clock rate or power. And the iteration time will be several weeks instead of minutes. So I'm curious what use cases this will have -- maybe something that doesn't fit into the FPGA mold like asynchronous logic?

blacksmythe 8y ago
Depends on clock rate. This is not for building a microprocessor. Static power on 180 nm circuit should be negligible, which won't be the case on a 14 nm FPGA.
ekroa 8y ago
Guessing following cases: 1) Education 2) Synthesized analog functions: PLL, ADC, DAC, Filters, etc. 3) Do your own standard cells using a new kind of logic 4) Proof-of-concept for analog circuitry
deepnotderp 8y ago
Prototyping of novel circuits (e.g. async), 3D integration, education, etc. It's a really useful thing to be honest.

ckdur 8y ago

Since all circuitry from different projects will be inside a single chip, and all circuits are accessible through the same platform, how do you plan to offer digital privilege access/circuitry protrction to each chip? I mean, random data can be push to jtag (for example) and get results for every circuit embedded inside this chip.

ekroa 8y ago
We've been thinking on this. It is definitely a though issue but it is not different from the opportunity of decapping a commercial chip and try to get IP from there. There a three options we have been thinking: 1. Obfuscated register mapping with a synced TRNG, 2. A light cipher. 3. Physical and structural logic obfuscation. The area overhead is an issue and we are trying to gather some results from an internal research going on to see feasibility.

russellmzauner 8y ago

Who cares about performance as long as it works? Pretty sure you're all missing the point. The point is that a kid working fast food during the day and OpenChip/OpenCores enthusiast at night could build whatever they're thinking of over summer vacation. New businesses are no longer started in the garage - they're started in the kitchen.