integrated-circuitmotherboardx86
From what I can gather, the BIOS chip is a loadable memory space that handles initial I/O, system checks and CAN configure certain things like power states and clock rates, before handing operation over to the chipset/CPU. The chipset then orchestrates connection and throughput between CPU and peripheral devices i.e. RAM, PCI lanes etc.
Is that the main difference? If so, why don't we just let the chipset handle all the initial boot stages?
Please close if off-topic and I will ask in superuser.
In a retriggerable MMV a new trigger during a pulse will restart the pulse time, and thus extend the current pulse.
If the pulse time is 10 s and you would retrigger 6 s after the first trigger you would get a 16 s pulse.
In a non-retriggerable MMV the second trigger will be ignored and you'll get a 10 s pulse:
Flip chip is about a single die. On the circuitry side solder balls are placed and the thing is mounted upside down on the PCB, hence the name.
Package on package (\$PoP\$) goes one step further: you have a flip chip, with another BGA on top of that, where the lower die occupies the place between the top die's solder balls.
The top die is not a flip chip; note the bonding wires. The bottom die is a flip chip, though the soldered balls aren't visible; the die should have been 1/10mm or so above its substrate.
Like many \$PoP\$ illustrations, this one shows a stacked die at the top, but that's not a requirement to talk about \$PoP\$.
A typical \$PoP\$ application would be to have a microcontroller below and a Flash or RAM device on top, since they will have to be tightly connected anyway.
Best Answer
The BIOS is a program stored in a read-only memory (the "BIOS chip) that does initialization and configuration of the computer system, and loads the operating system. This program runs in the main CPU on power-up or reset. When the BIOS program is finishes its job, it turns control of the system over to the operating system.