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Some Northbridge also provide interface for Accelerated Graphics Ports (AGP) bus, Peripheral Component Interconnect (PCI), PCI-X, PCI Express, or Hypertransport bus. Specific Northbridge IC must be used for PowerPC CPU. It is impossible to use Northbridge for Intel or AMD x86 CPU with PowerPC CPU.
A common example of a northbridge on a PowerPC platform is in Apple's older PowerPC-based computers like the iMac G5, which utilized an IBM CPC945 Northbridge chip. According to an Apple Developer note, The Power Mac G5's northbridge chip connected to a "Mid Bridge", which then connected to a south bridge. [9]
The sense pin is used to relay the rotation speed of the fan and the control pin is an open-drain or open-collector output, which requires a pull-up to 5 V or 3.3 V in the fan. Unlike linear voltage regulation, where the fan voltage is proportional to the speed, the fan is driven with a constant supply voltage; the speed control is performed by ...
The PowerPC 5000 family is a series of PowerPC and Power ISA microprocessors from Freescale (previously Motorola) and STMicroelectronics designed for automotive and industrial microcontroller and system on a chip (SoC) use. The MPC5000 family consists of two lines (51xx/52xx and 55xx/56xx) that really don't share a common heritage.
The specification for Power ISA v.2.03 [7] is based on the former PowerPC ISA v.2.02 [8] in POWER5+ and the Book E [9] extension of the PowerPC specification. The Book I included five new chapters regarding auxiliary processing units like DSPs and the AltiVec extension. Compliant cores. Freescale PowerPC e200, e500
For this reason, the IBM PowerPC desktops did not ship, although the reference design (codenamed Sandalbow) based on the PowerPC 601 CPU was released as an RS/6000 model (Byte ' s April 1994 issue included an extensive article about the Apple and IBM PowerPC desktops). Apple, which also lacked a PowerPC based OS, took a different route.
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The PowerPC 400 family is a line of 32-bit embedded RISC processor cores based on the PowerPC or Power ISA instruction set architectures.The cores are designed to fit inside specialized applications ranging from system-on-a-chip (SoC) microcontrollers, network appliances, application-specific integrated circuits (ASICs) and field-programmable gate arrays (FPGAs) to set-top boxes, storage ...