返回列表 发帖

Probleme with emmc with vccq =1,8v cant detect with supp or isp.

Hi, problem with emmc have vccq - 1.8v, can not detect, it gave me the initial emmc and failed - error: 00FF8081, when I use an external 1.8v, it tries to read the information, read cid csd successfully but error to read ecsd and failed - no data response state: I tried to measure vccq either in isp or on the emmc support , it is either absent or it is of low value -max 1.4v-.
2020-07-28_17-22-26.png

2020-07-28_17-26-16.png


2020-07-28_19-02-22.png

photo_2020-07-30_16-35-05.jpg


think you , problem resolu 👍👍👍👍👍 after checking ic6202 , all ok reading and programming .






photo_2020-07-30_16-35-57.jpg









photo_2020-07-30_16-36-01.jpg

TOP

Maybe it's your adapter problem.   1.8V is powered by U4  LDO   XC6206-1.8V on EMMC adapter.

check IC :XC6206-1.8V

when choice VCC3.3/VCCQ1.8V . programmer's VCCQ PINS(2# 3# of P2) is Is high resistance state.and 1.8V power by XC6206.


if choice VCC3.3/VCCQ3.3V   VCC and VCCQ powered by programmer.

this is EMMC adapter SCH.
EMMC_Sch.jpg

TOP

返回列表 回复 发帖