Here we talk to Raspberry Pi about their use of Cadence PCB Editor on the new Raspberry Pi Compute Module and the new Raspberry Pi IO Board. James Adams (Director of Hardware Engineering) talks to Simon Wood from Parallel Systems www.orcad.co.uk Cadence PCB Suite prices start from £499 + VAT for a 1 year rental of Standard www.parallel-systems.co.uk source
Raspberry Pi Compute Module 3 (CM3) targets on gadgets
Sort of announced in July 2016, the recent Raspberry Pi Compute Module 3 (CM3) is considered to go to the market very soon. Last Oct computer system equipment manufacturer NEC already announced a new spread of professional P and V Series large format displays that easily include the RPi CM3 module. The new module, obtainable in 2 versions – CM3 and CM3L (lite) – will complement the CM1 module introduced some years ago.
Specs for the CM1, CM3 and CM3L SODIMM modules may be found in the data sheet readily available on the RPi web page
. Where the CM1 was driven by a BCM2835 processor chip (as used on the original RPi and RPi B+ models), the CM3 posesses a quad-core 1.2 GHz BCM2837 CPU, like the RPi 3. It has 1 Gigabytes of LPDDR2 RAM and 4 Gigabytes eMMC Flash. The ‘L’ version is a CM3 with no eMMC Flash, enabling the owner to hook up his/her very own SD/eMMC device. The pinout of the CM1 and CM3 modules are identical but the CM3 module is one mm higher (31 millimeters).
The price tag on the new modules is not known yet, but since a CM1 sells at about ￡20, a comparable price may be expected for the CM3.
The CM3 is founded upon the Raspberry Pi 3 hardware and is created for industrial use to supply a budget friendly approach for customers to make customized products based upon the Pi hardware and software system. The Compute Module line is more compact and has less capabilities and ports than a regular Raspberry Pi, allowing it to be perfect for Internet of Things (IoT) products.
“The module works with a standard DDR2 SODIMM form factor, sockets for which are made by several manufacturers, are simply available in the market, and also are budget friendly,” Raspberry Pi COO and hardware lead James Adams stated in a post.
There are two designs of the CM3. Here are the technical specs for both of them:
BCM2837 central processing unit at as high as 1.2Gigahertz
4GB of on-module eMMC flash
BCM2837 processor at as high as 1.2GHz
SD card interface on Module pins thus an individual can connect it up to an eMMC or SD card of their choice
Both versions can be slotted into a newly released Compute Module IO Board V3 (CMIO3) which helps you to carry out the following:
Delivers essential power to the CM3
Will allow you to program the CM3 Standard’s flash memory or to work with an SD card on the Lite version.
Connect to the processor interfaces in a a little more friendly fashion (pin headers and flexi connectors, much like the Pi)
Supplies the essential HDMI and USB connectors allowing you to have an complete system which can boot Raspbian (or maybe the OS of your choice).
“This board offers both a starting template for those who want to design with the Compute Module, and a faster way to begin tinkering with the hardware, and building and testing a system, before going to the expense of making a made to order board,” Adam said.
The older Compute Module model will continue to be delivered, for many who don’t require the CM3’s performance increasing. According to the Raspberry Pi official mag The MagPi:
“With several caveats, the CM3 can be utilized a drop-in substitute for the CM1 since they are pin compatible; the CM3 is 1mm taller, yet, while the CPU can pull far more current from the VBAT power source line and will definitely produce a lot more heat under heavy load.”