3 ms·
It's not like the MISO line is tied to a power rail. You just need to sink more current than the output of the chip you are trying to override. So the driver i
by dbcurtis 8y ago
It's not like the MISO line is tied to a power rail. You just need to sink more current than the output of the chip you are trying to override. So the driver is likely in the single digit milliamp range, and in any case, you don't care if you toast the output driver on that chip. In fact, if you do, bonus!
- amelius 8y agoOk, but i suppose that in the future chip output pads can have circuitry which can detect a forced output (by measuring current). When this happens, the chip could short-circuit power lines, or superimpose a signal on the power-lines to notify the rest of the system.
- ispiansclsda 8y ago> When this happens, the chip could short-circuit power lines No chip design would ever do this. The chip would incinerate itself. > superimpose a signal on the power-lines to notify the rest of the system The rest of the system i.e. the BMC already know that something weird is up.