TSC2101 - Revision history

JulienB: imxssi has now a dedicated page

2010-01-04T09:30:59Z

imxssi has now a dedicated page

JulienB: /* Introduction */

2009-12-29T16:38:49Z

‎Introduction

JulienB: /* SSI test tool */

2009-12-21T11:22:53Z

‎SSI test tool

JulienB: /* SSI test tool */

2009-12-21T10:59:13Z

‎SSI test tool

JulienB at 09:32, 21 December 2009

2009-12-21T09:32:30Z

JulienB: /* SSI test tool */

2009-12-21T09:30:56Z

‎SSI test tool

JulienB at 12:49, 9 November 2009

2009-11-09T12:49:26Z

VeroniqueL at 15:03, 1 September 2009

2009-09-01T15:03:14Z

JulienB: creation (copy from tsc2102)

2008-12-15T14:40:54Z

creation (copy from tsc2102)

New page

Informations about the hardware interface between the i.MX27 and the TSC2101.

==Introduction==

This chip is a "SMART" 4-Wire Touch Screen Controller with Stereo DAC (Audio Out), Mono ADC (Audio In) and HP Amplifier. It is used on the [[APF27]] development board.

==Hardware interface with the i.MX27==
===Touchscreen===
Configuration and data exchange is done through the SPI bus n°2 (SPI2). 
The SPI 2 port is shared with the LCD interface of the i.MXL (these signals are present on the DevLight V2 LCD connector).

===Audio===
Configuration is done through SPI2 bus and audio data exchange through SSIA

===Signals===

{| border="1" cellpadding="5" cellspacing="0" summary="Signal connections"
|- style="background:#efefef;"
! ''' i.MX27 ''' || ''' TSC2101 ''' || '''Functionnality'''
|----------------
| SPI2_SCLK/'''REV''' || SCLK || SPI clock
|----------------
| SPI2_TXD/'''SPL_SPR''' || MOSI || SPI MasterOut SlaveIn
|----------------
| SPI2_RXD_1/'''PS''' || MISO || SPI MasterIn SlaveOut
|----------------
| PortB 17/'''SSI1_TXDAT''' || SSn || SPI Chip select
|----------------
| SPI2_SS/PortD 8/'''CLS''' || PINT/DAVn || Interrupt
|----------------
| Reset (on Reset switch) || RESETn || Global reset signal
|-
|}
'''Remark:'''
* i.MX27 SPI Chip Select signals are not used by Linux SPI infrastructure; it needs multiple chip select (one for each chip connected on the bus), and so GPIOs are used for that purpose.
* Chip interrupt is on Port D because Port B has already some and interrupt are shared on the same port.

==Drivers==
* [[TSC2102 Linux driver| TSC2102 Linux driver details ]]

==SSI test tool==
Use a special release of tsc2102 driver and imxssi for audio development purpose. Available under buildroot menuconfig->hardware-handling

* Requirements:
TSC2102 mclk: 16MHZ 
FS rate: 32KHz 

* uboot: Enable register debug from u-boot:
BIOS> mw.l 0x00200008 0
BIOS> mw.l 0x00210008 0

* linux: Load spi/tsc drivers
modprobe spi_imx
modprobe tsc2102

* imxssi: generate ssi signal
Special release of imxssi can generate an audio signal. 
just use imxssi with three parameters:
# imxregs param1 param2 param3
param1 can be 0: triangular signal or 1: sinusoïdal signal. 
param2: period of the signal in number of samples per channel. 
param3: Signal level coefficient [0.0 .. 1.0]. 

For example to produce a 300Hz 5v(pk-pk) sinusoid:
# imxssi 1 50 0.15

* next step: dma transfer

==Links==
* [http://focus.ti.com/docs/prod/folders/print/tsc2101.html TSC2101 Web page at Texas Instruments]
 

{{LanguageBar|TSC2101|TSC2101|TSC2101}}

[[Category:UserInput]]
[[Category:Audio]]

@@ Line 40: / Line 40: @@
 ==SSI test tool==
-Use a special release of tsc2102 driver and imxssi for audio development purpose.
+[[imxssi]]
-<pre class="host">
-$ make menuconfig
-</pre>
-<pre class="config">
-Package Selection for the target  --->
-    Armadeus specific tools/utilities  --->
-        [*] imxssi
-</pre>
-−
-* Requirements:
-TSC2102 mclk: 16MHZ<br>
-FS rate: 32KHz<br>
-−
-* U-Boot: Enable i.MX register access from user space in U-Boot:
-<pre class="apf">
- BIOS> run unlock_regs
-</pre>
-−
-* Linux: Load tsc driver
-<pre class="apf">
- # modprobe tsc2102
-</pre>
-−
-* imxssi: generate ssi signal
-Special release of imxssi can generate an audio signal.<br>
-just use imxssi with three parameters:
-<pre class="apf">
- # imxssi [-t type] [-l level] [-s samples] [--loop]
-</pre>
-* type can be 0: triangular signal or 1: sinusoïdal signal
-* samples: period of the signal in number of samples per channel
-* level: Signal level coefficient [0.0 .. 1.0]
-−
-For example to produce a 300Hz 5v(pk-pk) sinusoid:
-<pre class="apf">
- # imxssi -t 1 -s 50 -l 0.15
-</pre>
-−
-* next step: dma transfer
 ==Links==

@@ Line 68: / Line 68: @@
 just use imxssi with three parameters:
 <pre class="apf">
-  # imxssi [-t=type] [-l=level] [-s=samples]
+  # imxssi [-t type] [-l level] [-s samples] [--loop]
 </pre>
 * type can be 0: triangular signal or 1: sinusoïdal signal
@@ Line 76: / Line 76: @@
 For example to produce a 300Hz 5v(pk-pk) sinusoid:
 <pre class="apf">
-  # imxssi -t=1 -s=50 -l=0.15
+  # imxssi -t 1 -s 50 -l 0.15
 </pre>

@@ Line 68: / Line 68: @@
 just use imxssi with three parameters:
 <pre class="apf">
-  # imxssi param1 param2 param3
+  # imxssi [-t=type] [-l=level] [-s=samples]
 </pre>
-* param1 can be 0: triangular signal or 1: sinusoïdal signal
+* type can be 0: triangular signal or 1: sinusoïdal signal
-* param2: period of the signal in number of samples per channel
+* samples: period of the signal in number of samples per channel
-* param3: Signal level coefficient [0.0 .. 1.0]
+* level: Signal level coefficient [0.0 .. 1.0]
 For example to produce a 300Hz 5v(pk-pk) sinusoid:
 <pre class="apf">
-  # imxssi 1 50 0.15
+  # imxssi -t=1 -s=50 -l=0.15
 </pre>

@@ Line 61: / Line 61: @@
 * Linux: Load tsc driver
 <pre class="apf">
-  modprobe tsc2102
+  # modprobe tsc2102
 </pre>
@@ Line 68: / Line 68: @@
 just use imxssi with three parameters:
 <pre class="apf">
-  # imxregs param1 param2 param3
+  # imxssi param1 param2 param3
 </pre>
 * param1 can be 0: triangular signal or 1: sinusoïdal signal

← Older revision		Revision as of 12:49, 9 November 2009
Line 74:		Line 74:

	[[Category:UserInput]]		[[Category:UserInput]]
		+	[[Category:Touchscreen]]
	[[Category:Audio]]		[[Category:Audio]]

@@ Line 3: / Line 3: @@
 ==Introduction==
-This chip is a "SMART" 4-Wire Touch Screen Controller with Stereo DAC (Audio Out), Mono ADC (Audio In) and HP Amplifier. It is used on the [[APF27]] development board.
+This chip is a "SMART" 4-Wire Touch Screen Controller with Stereo DAC (Audio Out), Mono ADC (Audio In) and HP Amplifier. It is used on the [[APF27Dev]] development board.
 ==Hardware interface with the i.MX27==

@@ Line 1: / Line 1: @@
-Informations about the hardware interface between the i.MX27 and the TSC2101.
+Information about the hardware interface between the i.MX27 and the TSC2101.
 ==Introduction==
@@ Line 17: / Line 17: @@
 {| border="1" cellpadding="5" cellspacing="0" summary="Signal connections"
 |- style="background:#efefef;"
-! ''' i.MX27 ''' || ''' TSC2101 ''' || '''Functionnality'''
+! ''' i.MX27 ''' || ''' TSC2101 ''' || '''Functionality'''
 |----------------
 | SPI2_SCLK/'''REV''' || SCLK || SPI clock