View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000744 | SpeedFan | Fan control | public | 2007-01-10 16:36 | 2007-01-19 02:01 |
| Reporter | josenk | Assigned To | alfredo | ||
| Priority | normal | Severity | feature | Reproducibility | always |
| Status | acknowledged | Resolution | open | ||
| Product Version | 4.31 | ||||
| Summary | 0000744: Max6640 issues | ||||
| Description | Temp issues: -Remote temp is actually the internal chip temp. -Local temp is one of the remote temps. (I tested this problem by heating up a remote temp and noticed Local temp raised) -Remote temp2 is missing. -In advanced, there is no option to change settings "open-loop", "closed-loop", "Full-on", etc... I sent a report from the tool. | ||||
| Tags | No tags attached. | ||||
| Motherboard Model | |||||
| Video Card Model | |||||
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Thank you. I corrected the names to "TEMP 1" and "TEMP 2" as in the datasheet. I can't find any reference to the word "loop" in the datasheet. Could you help me? |
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Actually taking another look at the datasheet, it looks a little differnt then other Maxim chips.... <<< Snip from Max6640 datasheet >>> Fan-Speed Control The MAX6640 adjusts fan speed by controlling the duty cycle of a PWM signal. This PWM signal then either modulates the DC brushless fan |
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So you would like me to support changing bit 7 in registers 10h and 14h. Is this correct? |
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Yes, it would be great to allow the change of fan speed control. PWM Control Mode: -Set bit 7 of the fan 1 or 2 configuration 1 register (10h and 14h) to 1 Manual RPM Control Mode -Set bits 2, 3,and 7 of the fan 1 or 2 configuration 1 register (10h and 14h) to zero. Automatic RPM Control Mode -setting bit 7 of the fan 1 or 2 configuration 1 register (10h and 14h) to zero and selecting the temperature channel that controls the fan speed using bits 2 and 3 of the configuration register. I'll even send you one of my PCIexpress boards when the project is complete... I desided to use a MAX6640 and MAX6651 on a PCIe 1x board. Control 6 fans, two temps. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2007-01-10 16:36 | josenk | New Issue | |
| 2007-01-14 21:39 | alfredo | Note Added: 0002306 | |
| 2007-01-14 21:39 | alfredo | Status | assigned => acknowledged |
| 2007-01-15 04:25 | josenk | Note Added: 0002309 | |
| 2007-01-18 13:14 | alfredo | Note Added: 0002318 | |
| 2007-01-19 02:01 | josenk | Note Added: 0002323 | |
| 2009-08-19 08:28 | alfredo | Relationship added | has duplicate 0001457 |
| 2009-08-19 08:28 | alfredo | Relationship deleted | has duplicate 0001457 |
