Mity CPU Platforms » MitySOM-335x (ARM Cortex-A8 Based Products)

10/28/2014

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 th... Jonathan Cormier

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 ... Chris Leon

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 tol... Jonathan Cormier

10:56 AM PCB Development: RTC Crystal Specifications

What are the ppm drift specifications for the TPS65910 RTC crystal? Chris Leon

10/27/2014

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 A... Alexander Block

10/21/2014

10:28 AM Software Development: RE: Communicating with an 8-bit parallel interface (GPIO, SPI or GPMC)

SPI:
I'm not sure what you mean by using the spi bus to handle the 8-bit data bus.
If you want raw access to the ... Jonathan Cormier

10:16 AM Software Development: RE: Communicating with an 8-bit parallel interface (GPIO, SPI or GPMC)

As Alex mentioned the GPMC bus is used for an on-SOM nand memory. The GPMC bus allows multiple devices to use the bu... Jonathan Cormier

10/20/2014

04:55 PM Software Development: Communicating with an 8-bit parallel interface (GPIO, SPI or GPMC)

Posting this on behalf of a customer:
The interface to their networking chip and other peripheral boards on their ... Alexander Block