Toradex Colibri Migration Guide
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2.7 Design Guide for Customer Specific Hardware
In general you should regard our Colibri Evalboard schematics and design your hardware similar to it. (
See the Colibri PXAxxx datasheet for more information about pin out.The SODIMM pins that have a really different function are described below.
1. Pull up all the nCS signals that you are using on your HW.
2. Not all of the Colibri modules have exactly the same Ethernet controller (AX88796BL, AX88772B, DM9000) therefore a slightly different circuit is used. See the Evalboard schematic for details. (
).
3. SODIMM pin 22 is nVDD_FAULT on the Colibri PXA270 and nGPIO_RESET on the Colibri PXA3x0. Make sure you have the proper glue logic to generate the right behavior if both modules will be used. Or just leave it open, that
will work on all modules.
4. SODIMM pin 24: In general this pin should be left unconnected to be compatible with all Colibri modules. On some Colibri modules this pin is nBATT_SENSE. Please contact [email protected] for more information about low
battery handling on Colibri modules.
5. The SODIMM pins 118, 120, 122, 124, 134, 136, 138, 140, 142, 144, 146, 184, 186, 188 are Address[25:12] on the Colibri PXA270. On the Colibri PXA3x0 most of them are GPIOs. On the Colibri T20 this pins can be used as
addresses or GPIOs. Don't use this signals in a design for all modules or add proper glue logic to your HW.
6. The SODIMM pins 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178 and 180 are Data[31:16] on the Colibri PXA270. On the Colibri PXA3x0 they are GPIOs. Don't use this signals in a design for both
modules or add proper glue logic to your HW. The Colibri T20 has a 32bit bus, but it is not 100% compatible with the Colibri PXA270.
7. The SODIMM pins 126,128,130, 132 are DQMs which are not available on all. Don't use this signals in a design for all modules or add proper glue logic to your HW.
8. Some of the GPIOs on Colibri PXA3xx have a second instance (e.g. GPIO1_2). It is not possible to use both pins as GPIO (GPIO1 and GPIO1_2). There is no problem if one of the two pins is set to an alternate function different
to GPIO. E.g. if one pin is used as LCD data signal you can use the other pin as GPIO without any restrictions. Take care when using GPIOs with second instances.
Affected GPIOs: PXA320: GPIO[17:0]; PXA310: GPIO[10:0]; PXA300: GPIO[6:0]
9. There are signals which are connected to more than one SODIMM pin. Please refer to the notes in the compatibility list.
10. The analog inputs (SODIMM pin 2, 4, 6, 8) have different input voltage ranges depending on the audio-/touch-controller used on the Colibri module. Make sure you add a proper circuit onto your carrier board or do not use voltages
higher than 3.3V if you want to support current and future Colibri modules.
We recommend using 3.3V as maximum voltage on all AD inputs to ensure the compatibility to future Colibri modules.
Audio-/Touch-Codec (Colibri Modules)
Analog Voltage Input Range
NXP UCB1400:
- Colibri PXA 270 up to and including V 1.2
- Colibri PXA320 up to and including V 1.2
AD 0-3 (SODIMM pin 2, 4, 6, 8): 0V to 7.5V
Wolfson WM9715L:
- Colibri PXA310 all versions
- Colibri PXA270 V 2.1 and higher
- Colibri PXA320 V 2.0 and higher
- Colibri T20
AD 0, 1, 3 (SODIMM pin 2, 6, 8): 0V to 3.3V
AD 2 (SODIMM pin 4): 0V to 5V
STMicroelectronics STMPE811 / Freescale SGTL5000:
- Colibri T30
AD 0-3 (SODIMM pin 2, 4, 6, 8): 0V to 3.3V
Содержание Colibri PXA270
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