uTCA RTM 8 SFP issueshttps://ohwr.org/project/utca-rtm-8-sfp/issues2019-02-12T11:05:50Zhttps://ohwr.org/project/utca-rtm-8-sfp/issues/1IC12 (LM75AIM) I2C address2019-02-12T11:05:50ZJoão BritoIC12 (LM75AIM) I2C addressThe pin 5 of IC12 (LM75AIM temperature sensor) is floating, generating
uncertain i2c addressing.
Put it on the GND solved the problem.João BritoJoão Britohttps://ohwr.org/project/utca-rtm-8-sfp/issues/2Pull down resistors2019-02-12T11:05:50ZJoão BritoPull down resistorsThe pull down resistors R2, R3, R4, R5 and R13 have inappropriate value
of 100 ohms. Because of this is impossible to drive 74HC04D ports to
high logic value.
I changed the resistor from 100 ohms to 100k ohms and works fine.João BritoJoão Britohttps://ohwr.org/project/utca-rtm-8-sfp/issues/3more current for SFPs2019-02-12T11:05:51ZGrzegorz Kasprowiczmore current for SFPssome SFP consume much more current that DC/DC can handleGrzegorz KasprowiczGrzegorz Kasprowicz