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                        apollo3-ctimer_pattern_i2s_sgtl5000
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History
** Date        Ver       Initials          Description
**   - 2019-03-21  V1.0  MSc  Automatic Created
**   - 2019-08-30  V1.1  MSc             Startup for IAR corrected
**   - 2019-09-12  V1.2  MSc             Fixed wrong I2S_DOUT descriptionto PAD12

Supported toolchain versions


ARM        5.11
IAR        7.30
iSYSTEM    9.12.213
Segger     4.1
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This example demonstrates with use of STGL5000 how to generate 
I2S audio-output by use of two timer with one timer configured as pattern generator.
 
 Connection:
 STGL5000   <->    Apollo3Blue  Function
 SYS_MCLK   <-     GPIO7        (Master Clock)
 I2S_SCLK    ->    GPIO25       (I2S Bit Clock)
 I2S_LRCLK   ->    GPIO13       (I2S Word-Select Clock)
 I2S_DIN    <-     GPIO12       (I2S Data)  
 CTRL_DATA  <->    GPIO9        (I2C SDA)
 CTRL_CLK   <->    GPIO8        (I2C SCL)
 
 
                                -----------        -----------  CLKOUT             PAD7
                                |  HFRC   |________|  DIV4    |________________________   MCLK
                                |  48MHz  |        |          |
                                -----------        -----------
                
       PAD25                                A0IN    --------------------
 BCLK  ___________________________________________|CLK                 |
                                                  |                    |  A0OUT    PAD12
                                                  |     CTIMER A0  OUT |________________  DOUT
                                                  |                    |
                                                 _|TRIGGER             |
       PAD13 B0IN   --------------------        |  ---------------------
 LRCLK ____________|CLK                 |       |   64-bit pattern generator
                   |                    | B0OUT |  
                   |     CTIMER B0  OUT |_______|      
                   |                    |          
                   |                    |          
                   ---------------------     
                    single-count
 
 
 Audio-Sequence by Manuel Schreiner, generated by iMachine 2

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