4 ms·
Didn'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
by somethoughts 5y ago
Didn'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...