Changes between Version 7 and Version 8 of sbcrevisions


Ignore:
Timestamp:
06/06/2018 02:52:20 PM (2 weeks ago)
Author:
Ryan Erbstoesser
Comment:

add year for 2388

Legend:

Unmodified
Added
Removed
Modified
  • sbcrevisions

    v7 v8  
    378378== GW2388-4 ==
    379379=== Revision A === 
    380 Date: 12/09
     380Date: 12/2009
    381381 * Initial Release
    382382
    383383=== Revision B === 
    384 Date: 05/10
     384Date: 05/2010
    385385
    386386 * Improve GSC battery circuit to increase battery life
     
    391391
    392392=== Revision C ===
    393 Date: 12/10
     393Date: 12/2010
    394394 * Change watchdog timer circuit to ensure narrow pulse width generates reset
    395395 * Add ARM processor digital I/O control of USB voltage generator
     
    401401 * Add filter capacitors to LED, reset, and tamper switch connectors to reduce radiated emissions.
    402402=== Revision D ===
    403 Date: 09/11
     403Date: 09/2011
    404404 * Increase default DDR2 memory size from 128Mytes to 256Mbytes due to price reduction in newer parts
    405405 * Replace core voltage switchers with newer devices that do not require the reset generator for under voltage lockout
    406406 * Update primary 3.3V switcher with newer Mosfets and Inductor to improve efficiency by 10% and improve transient response for supporting higher power radios.
    407407=== Revision E ===
    408 Date: 08/12
     408Date: 08/2012
    409409 * Change the Mini-PCIe bridge reset from system reset to ARM Processor GPIOA11 to ensure it remains low until after the PCIe clock is valid.
    410410=== Revision F ===
    411 Date: 12/12
     411Date: 12/2012
    412412 * Terminate unused PCIe bridge inputs to correct for TI design flaw that potentially locks up the bridge at low temperature and high humidity environments
    413413 * Replace bipolar transistor used to drive fan with a MOSFET device for increased current capability
    414414 * Add passive filter to JTAG system reset input to reduce EMI sensitivity.
    415415=== Revision G ===
    416 Date: 12/13
     416Date: 12/2013
    417417 * Replace ARM processor clock with an external clock generator to reduce jitter on PCIe differential clocks
    418418 * Add diodes to the PoE return paths on both channels for full isolation when being powered by an 802.3 switch
    419419 * Replace N-channel MOSFET used to drive fan with a P-channel device for proper control.
    420420=== Revision H ===
    421 Date: 02/14
     421Date: 02/2014
    422422 * Move the PCIe interrupts from processor digital I/O signals to dedicated interrupts for improved interrupt capability
    423423= Other SBC Families =