How to find vendor name from JEDEC id?
I would like to get the manufacturer name from JEDEC ids. Here is an example of some ids.
JEDEC ID:7F 7F 7F 7F 7F 51 00 00
JEDEC ID:80 2C
JEDEC ID:80 CE
JEDEC ID:AD 00 00 00 00 00 00 00
JEDEC ID:CE 01 09 13 45 67 5E F4
JEDEC ID:CE 01 09 13 47 7A 3E 5A
I found this list of manufacturer ids from JEDEC, but I’m not sure if this ids match to my ids and how to connect them correctly.
For example:
If I look at the JEDEC id CE 01 09 13 47 7A 3E 5A, the first Byte CE is equal to 11001110. If I compare this value with the JEDEC list, I get Samsung as Vendor. This is correct for the hardware.
But for example the Byte value 80 from JEDEC id 80 CE is missing in the list. Also I cannot find the vendor for 7F 7F 7F 7F 7F 51 00 00. Additional to that I don’t know when to use which Byte value from the JEDEC list (Byte 1, Byte 2, ...) In guess 01 00 00 00 is AMD and 00 00 01 00 is Camintonn Corporation. But in my case I haven’t any leading zeros. How should I know when to use the second Byte value?
Any idea how to get the vendor name from the ids? Are there any rules?
Answer
JEDEC provides a document called JEP106 which contains all manufacturers. You can download this document here (rev AP release in Feb 2015). In that document the different banks are continued with the byte value 7F.
If you have the id 7F 01 you’re in the second bank and you’re vendor is Cirrus Logic. Without leading 7F you’re in the first bank.