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From 10/27/2014 to 11/25/2014

10/28/2014

JC 11:48 AM PCB Development: RE: RTC Crystal Specifications
Theres a 24MHz crystal between XTALOUT and XTALIN on the ARM. Its frequency tolerance at 25C is +/- 25ppm.
Note these numbers are based on a 3359-GX-226-RL RevD.
Jonathan Cormier
CL 11:42 AM PCB Development: RE: RTC Crystal Specifications
Great, thank you for the information. Is it a similar specification for the other oscillator on the board, connected to the ARM? Chris Leon
JC 11:31 AM PCB Development: RE: RTC Crystal Specifications
For the 32khz crystal attached between the OSC32KOUT and OSC32KIN pins, according to its datasheet, the frequency tolerance at 25C is +-10ppm. Jonathan Cormier
CL 10:56 AM PCB Development: RTC Crystal Specifications
What are the ppm drift specifications for the TPS65910 RTC crystal? Chris Leon

10/27/2014

AB 04:10 PM Software Development: RE: Communicating with an 8-bit parallel interface (GPIO, SPI or GPMC)
Updated question(s) from the customer:
I've been looking into using GPMC. The Technical Reference Manual for the AM335x says that GPMC has a 512MB address space. Since the module I have has a 512MB NAND flash on GPMC, configuring anot...
Alexander Block
 

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