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7i96 - P1 CONNECTOR - 15 mA for sink - it is not good
4 years 1 month ago #252434
by zz912
Replied by zz912 on topic 7i96 - P1 CONNECTOR - 15 mA for sink - it is not good
OK
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4 years 1 month ago #252438
by PCW
Replied by PCW on topic 7i96 - P1 CONNECTOR - 15 mA for sink - it is not good
OK its R38
It looks like it was a deliberate change to allow better operation with G540 drives (that need more high drive on the charge pump signal = DB25 pin16 =GPIO50)
I will fix the documentation
It looks like it was a deliberate change to allow better operation with G540 drives (that need more high drive on the charge pump signal = DB25 pin16 =GPIO50)
I will fix the documentation
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4 years 1 month ago #252459
by zz912
Replied by zz912 on topic 7i96 - P1 CONNECTOR - 15 mA for sink - it is not good
This is my R38.
Attachment not found
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4 years 1 month ago #252477
by zz912
Replied by zz912 on topic 7i96 - P1 CONNECTOR - 15 mA for sink - it is not good
I have an application where I use a 7I37TA card to protect P1. Will this resistor not bother her?
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4 years 1 month ago #252479
by zz912

Replied by zz912 on topic 7i96 - P1 CONNECTOR - 15 mA for sink - it is not good
It si not DB25 pin16. It is lucky 13.OK its R38
It looks like it was a deliberate change to allow better operation with G540 drives (that need more high drive on the charge pump signal = DB25 pin16 =GPIO50)
I will fix the documentation
Attachment not found
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4 years 1 month ago #252519
by PCW
Replied by PCW on topic 7i96 - P1 CONNECTOR - 15 mA for sink - it is not good
OK
It should not interfere with any Mesa daughter card but might cause issues
with some parallel port BOBs
I checked the BOM and its 300 Ohms there, not sure if it was done for a reason
or was just a mistake.
It should not interfere with any Mesa daughter card but might cause issues
with some parallel port BOBs
I checked the BOM and its 300 Ohms there, not sure if it was done for a reason
or was just a mistake.
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