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Author: LornaLynch

hardware/computemodule/cm-peri-sw-guide.md

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 This guide is designed to help developers using the Compute Module get to grips with how to wire up peripherals to the Compute Module pins, and how to make changes to the software to enable these peripherals to work correctly.
 
-The Compute Module contains the Raspberry Pi BCM2835 System On Chip (SoC) or "processor", memory, and eMMC. The eMMC is similar to an SD card but is soldered onto the board; unlike SD cards, eMMC is specifically designed to be used as a disk and has extra features that make it more reliable in this use case. Most of the pins of the SoC (GPIO, two CSI camera interfaces, two DSI display interfaces, HDMI etc) are freely available and can be wired up as the user sees fit (or, if unused, can usually be left unconnected). The Compute Module is a DDR2 SODIMM form-factor-compatible module, so any DDR2 SODIMM socket should be able to be used (note the pinout is NOT the same as an actual SODIMM memory module).
+The Compute Module contains the Raspberry Pi BCM2835 system on a chip (SoC) or "processor", memory, and eMMC. The eMMC is similar to an SD card but is soldered onto the board; unlike SD cards, the eMMC is specifically designed to be used as a disk and has extra features that make it more reliable in this use case. Most of the pins of the SoC (GPIO, two CSI camera interfaces, two DSI display interfaces, HDMI etc) are freely available and can be wired up as the user sees fit (or, if unused, can usually be left unconnected). The Compute Module is a DDR2 SODIMM form-factor-compatible module, so any DDR2 SODIMM socket should be able to be used (note the pinout is NOT the same as an actual SODIMM memory module).
 
 To use the Compute Module, a user needs to design a (relatively simple) 'motherboard' which can provide power to the Compute Module (3.3V and 1.8V at minimum) and which wires the pins up to the required peripherals for the user's application.