My "rockpro64" is different from the public circuit diagram. - Printable Version +- PINE64 (https://forum.pine64.org) +-- Forum: ROCKPRO64 (https://forum.pine64.org/forumdisplay.php?fid=98) +--- Forum: General Discussion on ROCKPRO64 (https://forum.pine64.org/forumdisplay.php?fid=99) +--- Thread: My "rockpro64" is different from the public circuit diagram. (/showthread.php?tid=6602) |
My "rockpro64" is different from the public circuit diagram. - t4_4t - 09-29-2018 "ROCKPro64 Schematic v2.1 (Second Batch Production Release)" http://files.pine64.org/doc/rockpro64/rockpro64_v21-SCH.pdf Question 1) In the above published circuit diagram (Sheet of "CODEC/Head phone") "R225 = DNP, R226 = 0R" is presented. However, the result of examining my "rockpro64" is "R225 = 10kΩ, R226 = DNP". Please tell me whether this difference is due to the production lot or just the mistake of the circuit diagram. *) I think that it is merely a mistake in the circuit diagram. Question 2) Connection of headphone-jack = "J16:pj_35A063" is obviously wrong. *) I think that the top and bottom are connected in reverse. Please introduce the datasheet of "pj_35A063" or present the correct circuit diagram. I searched the datasheet for "pj_35A063", but I could not find it. As for the signal name "HPGND / HPOL / HPOR", its connection relation can be inferred. However, as for the signal name "PHONE_DET / MIC_IN 2 P", since the specification of "pj_35A063" is unknown, it is impossible to infer the correct connection relation. --- My "rockpro64" is a "RAM=4GB" version, and it arrived in 2018-August. I think that it is probably the "second batch production" lot. RE: My "rockpro64" is different from the public circuit diagram. - tllim - 10-04-2018 (09-29-2018, 03:20 AM)t4_4t Wrote: "ROCKPro64 Schematic v2.1 (Second Batch Production Release)" Your board should be second batch. The ROCKPro64 4GB and 2GB board are identical except LPDDR4 memory configuration. Thanks your finding, I have feedback to hardware engineer. RE: My "rockpro64" is different from the public circuit diagram. - t4_4t - 10-04-2018 Thanks for the reply. The main point of this question is not looking for any mistakes. As you may have noticed, currently All "OS-Imgae" can not output sound via "ES8316". I judged that part of the cause of this issues was included in this part, so I asked. To be useful to all "rockpro64-OS" developers, I expect you to get accurate answers from you. |