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The BCM2835 used in the PiZero was used in the Nokia 808 PureView as a coprocessor for graphics and the camera: https://en.wikipedia.org/wiki/Nokia_808_PureView
by rossoldfield 5y ago
The BCM2835 used in the PiZero was used in the Nokia 808 PureView as a coprocessor for graphics and the camera: https://en.wikipedia.org/wiki/Nokia_808_PureView https://en.wikipedia.org/wiki/Nokia_808_PureView
The BCM2763 and BCM2835 are the same silicon in a different package: https://raspberrypi.stackexchange.com/questions/840/why-is-the-cpu-sometimes-referred-to-as-bcm2708-sometimes-bcm2835/56155#56155 https://raspberrypi.stackexchange.com/questions/840/why-is-t...
- somethoughts 5y agoDidn't know that. That makes sense. As a discrete coprocessor to the primary Smartphone SOC for a very high end smartphone, for power management the discrete coprocessor chip can be completely powered down when going into idle mode. The trick/indicator about the design goal of primary Smartphone SOC usage for the OMAP SOCs and most mobile CPU is the existence of deep sleep, RAM retention modes. Additionally every GPIO pin is configurable for Pull-Up/Pull-Down to prevent current leakage. I haven't looked extensively but I don't believe the Broadcom SOCs support this mode. Actually after more extensive review - I think the story is probably that Broadcom attempted to make a smartphone processor from Alpamosaic's Video Coprocessor, but didn't adequately support the low power modes and didn't get any design wins for smart phone. They then pivoted and found traction in the Over the Top TV space. https://www.computer.org/publications/tech-news/chasing-pixels/alphamosaic-to-pi-to-doom https://www.computer.org/publications/tech-news/chasing-pixe...