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标题: Is it possible to get the schematic from T56? [打印本页]

作者: Oleg_Skalskiy 时间: 2022-12-24 02:15 标题: Is it possible to get the schematic from T56?

There are questions about what should be in place u5
Yes, and in principle for future repairs in case of a short circuit

作者: admin 时间: 2022-12-25 17:41

回复 1# Oleg_Skalskiy

U4 and U5 is a LDO on T56. MODE is AMS11117-1.2V. Packge is SOT89.
1.U4 Normal voltage about 1.2V always.If it is broken, the programmer maybe not be connected to the computer at the same time.
２.U5 normal voltage is about 3.3V on idle state. If it is broken, self check maybe not passed. and test IO voltage is not correct.

These two components have been replaced for the newly delivered programmer.

作者: Oleg_Skalskiy 时间: 2022-12-25 18:16

U5 1.2v but produces 3.3
And why is adj not installed. Why is it so hard to do.
U5 exactly at 1.2V?

作者: Oleg_Skalskiy 时间: 2022-12-25 18:16

Test is OK

作者: Oleg_Skalskiy 时间: 2022-12-25 20:46

And tell me the value of R29

作者: admin 时间: 2022-12-26 12:45

And tell me the value of R29
Oleg_Skalskiy 发表于 2022-12-25 20:46

R29 doesn't matter，This is only a discharge resistance of overcurrent protection signal.
it's about 4.7K-22K.

作者: admin 时间: 2022-12-26 12:48

U5 1.2v but produces 3.3
And why is adj not installed. Why is it so hard to do.
U5 exactly at 1.2V ...
Oleg_Skalskiy 发表于 2022-12-25 18:16

AMS1117-1.2V LDO is also adjustable, but the minimum voltage is not less than 1.2V .
T56 adjust the output voltage of VCCIO through DAC5571
VIOout=Vdacout+1.2V

图片附件: 1.JPG (2022-12-26 12:55, 40.63 KB) / 下载次数 7262
http://forums.xgecu.com/attachment.php?aid=1658&k=f39f438f916f3f77ad7588f0e0de3ec3&t=1715737258&sid=XJfb33

作者: Oleg_Skalskiy 时间: 2022-12-26 17:09

R29 doesn't matter，This is only a discharge resistance of overcurrent protection signal.
it's ...
admin 发表于 26-12-2022 12:45

I have two parallel resistors
22kOm + 5.6kOm = 4.464kOm

Can be replaced by another value. And tell me which one?

作者: admin 时间: 2022-12-27 08:47

I have two parallel resistors
22kOm + 5.6kOm = 4.464kOm

Can be replaced by another value. ...
Oleg_Skalskiy 发表于 2022-12-26 17:09

It doesn't matter.

作者: Oleg_Skalskiy 时间: 2022-12-27 17:07

This is the test screen. https://radikal.host/i/JXMTMK

VPP no j3 j4 j5 j6 j7 j8 no VPP is this normal?
VPP is 11.81 is this normal?
TEST normal

作者: admin 时间: 2022-12-27 17:47

This is the test screen.

VPP no j3 j4 j5 j6 j7 j8 no VPP is this normal?
VPP is 11.81 is this n ...
Oleg_Skalskiy 发表于 2022-12-27 17:07

Yes, VPP +-0.5V, ISP VPP only J1/J2

作者: Oleg_Skalskiy 时间: 2022-12-27 18:22

It doesn't matter.
admin 发表于 27-12-2022 08:47

Replaced with one 10kOm (0806)
Began to work better with EMMC.
How is this related?
and where can I find the schematic for the EMMC T56 adapter? MOORC adapter I want to fully adapt

作者: Oleg_Skalskiy 时间: 2022-12-29 06:59

Please, answer me!
We need a description of these elements marked in red
https://radikal.host/i/JFW9ln

作者: admin 时间: 2022-12-29 10:28

回复 13# Oleg_Skalskiy

BGA153-2021_10.rar (631.72 KB)

BGA100_2021_10.rar (624.68 KB)

1. R1-R9 22 ohm    0603
2. C1 C2 10uf          1206
3. C3       2.2uf          1206
4. C4-C9 0.1uf          0603
5. C10    15P          0603
6. U4  LDO  XC6206-1.8V  SOT23
（it may be more stable when use a 2.0V LDO)

附件: BGA100_2021_10.rar (2022-12-29 10:26, 624.68 KB) / 下载次数 14019
http://forums.xgecu.com/attachment.php?aid=1659&k=e0ddbe3cacb5b3b7e9444141ba67f7d4&t=1715737258&sid=XJfb33

附件: BGA153-2021_10.rar (2022-12-29 10:26, 631.72 KB) / 下载次数 14632
http://forums.xgecu.com/attachment.php?aid=1660&k=6fe107cc5a9fc17158556d577941955c&t=1715737258&sid=XJfb33

作者: Oleg_Skalskiy 时间: 2022-12-29 17:07

R1-R9 33 Ohm
Will they greatly change the work with emmc or is such a value allowed?

作者: Oleg_Skalskiy 时间: 2023-1-1 00:01

My Adapter
1. R1-R9 33 ohm             0806
2. C1 C2 10uf 50V          0806
3. C3       2.2uf 50V          0806
4. C4-C9 0.1uf 50V          0806
5. C10    15P 50V             0806
6. U4  LDO  XC6206-2.0V  SOT23
7. Between CLK and VCCQ I installed a 470 Ohm resistor (0806)

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