XGecu Programmer Forums - Powered by Discuz! Board

标题: Probleme with emmc with vccq =1,8v cant detect with supp or isp. [打印本页]

作者: tahar191 时间: 2020-7-29 22:59 标题: 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-.

图片附件: 2020-07-28_17-22-26.png (2020-7-29 23:18, 91.65 KB) / 下载次数 18288
http://forums.xgecu.com/attachment.php?aid=128&k=6637cd6edf06eda0d74a7347b281e0b3&t=1773439396&sid=745TY7

图片附件: 2020-07-28_17-26-16.png (2020-7-29 23:18, 92.78 KB) / 下载次数 18229
http://forums.xgecu.com/attachment.php?aid=129&k=4d9dc9baad6f721b17fcbd53d3d99da0&t=1773439396&sid=745TY7

图片附件: 2020-07-28_19-02-22.png (2020-7-29 23:20, 115.24 KB) / 下载次数 18139
http://forums.xgecu.com/attachment.php?aid=130&k=77c7f7c060e04f25e2751ea8254fb17e&t=1773439396&sid=745TY7

作者: admin 时间: 2020-7-30 13:03

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.

图片附件: EMMC_Sch.jpg (2020-7-30 13:21, 137.23 KB) / 下载次数 18463
http://forums.xgecu.com/attachment.php?aid=131&k=6db9f96fa254db6b77d97027fb14c161&t=1773439396&sid=745TY7

作者: tahar191 时间: 2020-7-30 22:48

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

图片附件: photo_2020-07-30_16-35-05.jpg (2020-7-30 22:33, 203.87 KB) / 下载次数 18799
http://forums.xgecu.com/attachment.php?aid=132&k=3e85053d654954aa754b73f0c2a4e9b6&t=1773439396&sid=745TY7

图片附件: photo_2020-07-30_16-35-57.jpg (2020-7-30 22:33, 168.59 KB) / 下载次数 18535
http://forums.xgecu.com/attachment.php?aid=133&k=143312e419557f9ed23cda889c635eba&t=1773439396&sid=745TY7

图片附件: photo_2020-07-30_16-36-01.jpg (2020-7-30 22:34, 169.15 KB) / 下载次数 18595
http://forums.xgecu.com/attachment.php?aid=134&k=7d3ef895c05d76495677e702b76fde4a&t=1773439396&sid=745TY7

欢迎光临 XGecu Programmer Forums (http://forums.xgecu.com/)