Difference between revisions of "TSC2102"
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{| border="1" cellpadding="5" cellspacing="0" summary="Signal connections" | {| border="1" cellpadding="5" cellspacing="0" summary="Signal connections" | ||
|- style="background:#efefef;" | |- style="background:#efefef;" | ||
| − | ! ''' i.MXL ''' || ''' TSC2102 ''' || '''Functionnality''' | + | ! ''' i.MXL/DevLight ''' || ''' TSC2102 ''' || '''Functionnality''' |
|---------------- | |---------------- | ||
| || SCLK || SPI clock | | || SCLK || SPI clock | ||
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|- | |- | ||
|} | |} | ||
| + | '''Remark:''' SPI_SSn i.MXL/DevLight chip select signal is not used on Linux as the driver need multiple chip select (one for each chip connected on the bus), so we use GPIOs for that purpose. | ||
==Links== | ==Links== | ||
* [http://focus.ti.com/docs/prod/folders/print/tsc2102.html TSC2102 Web page at Texas Instruments] | * [http://focus.ti.com/docs/prod/folders/print/tsc2102.html TSC2102 Web page at Texas Instruments] | ||
Revision as of 13:34, 27 May 2007
Informations about the hardware interface between the i.MXL and the TSC2102. This chip will be available on the DevFull board but anyone should be able to add it to it's DevLight.
Introduction
This chip is a "SMART" 4-Wire Touch Screen Controller with Stereo DAC with HP Amplifier.
Interface
Touchscreen
Configuration and data exchange is done through the SPI bus n°
Audio
Configuration through SPI bus and data exchange through SSIA
Signals
| i.MXL/DevLight | TSC2102 | Functionnality |
|---|---|---|
| SCLK | SPI clock | |
| MOSI | SPI MasterOut SlaveIn | |
| MISO | SPI MasterIn SlaveOut | |
| PortB 17 | SSn | SPI Chip select |
| PortB 18 | PINT/DAVn | IT |
Remark: SPI_SSn i.MXL/DevLight chip select signal is not used on Linux as the driver need multiple chip select (one for each chip connected on the bus), so we use GPIOs for that purpose.
