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Feature |
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Specification |
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Product Homepage | http://www.samsung.com/global/business/semiconductor/productInfo.do?fmly_id=229&partnum=SC32442 |
Product User Manuel | http://210.118.57.197/Products/Semiconductor/MobileSoC/ApplicationProcessor/ARM9Series/SC32442/um_s3c2442b_rev12.pdf |
Product Datasheet | http://www.opatnet.cz/elektronika/datasheet/U/um_s3c2442b_rev12.pdf |
Driver | |
Freedom Requirements | Docs available from Samsung, but not easily. Only after registering and qualifying. here is a copy. um_s3c2442b_rev12.pdf] |
For information about the Evaluation board look here.
For information about the difference between Samsung S3C2440A and Samsung S3C2442B, see Samsung_S3C2440A vs Samsung_S3C2442B
One difference is that the CPU voltage limits are specified variably from 400MHz (1.5V) to 50MHz (1V) the current at these speeds is not mentioned. The FreeRunner includes a variant that can be clocked up to 500MHz, however a) current consumption is insane at this frequency and b) various other components can't cope with the peripheral clock at this speed. It is therefore safe to assume that the highest frequency for the Neo FreeRunner is 400MHz.
It should also be possible to use host mode with externally-provided power. This will allow the FreeRunner to be connected to a USB device and be powered and charging the battery if present at the same time.
In addition you need to make sure EN_USBHOST signal that enables the physical Host mode power generation and disables the USB -> PMU charging path is deasserted. This may be taken care of automatically shortly by detection of the 48K resistor on a USB insertion leading to forcing EN_USBHOST deasserted. The charge pump that generates the 5V in host mode doesn't seem to mind getting external 5V given to it, but the real issue is that the battery will not be charged at all if we leave EN_USBHOST asserted since one of its jobs is to stop that happening.