Master Control Port Runtime Sequential Write (ADAU145x)

The master control port Runtime Sequential Write block allows communication with external devices during audio processing. Typically this block is used to transfer data to an external device like a converter or codec. Communication over the master control port bus (I2C or SPI) occurs once per external trigger. The data transferred between host and device is defined in a SigmaStudio sequence file which can be generated using the SigmaStudio sequence window.

Click on to configure the parameters.

1. Drag the block into a schematic design.
2. Open the control port property window by clicking on image and configure all the required properties.
3. Ensure that the 'Sub-Address Bytes:' and the 'Device Address' are entered correctly.
4. Select a “Sequence File” that defines the desired communication with the device.
5. Click “OK”. The control port data will be embedded in the DSP program. This step is necessary whenever the sequence file is modified.
6. Connect the trigger signal to the input pin.
7. Add multiple instances to configure multiple slaves during the runtime.

Multiple external devices can be configured by creating multiple instances of the Runtime Sequential Write module and selecting appropriate slave select pins in the configuration parameters as detailed below.

If the device to be programmed is selected through MP0 (the /SS_M pin), no configuration is required in the register controls. Otherwise, the multipurpose pin must be configured to act as the slave select in the Register Window. (Hardware Configuration → ICx - ADAU145x Register Controls → MULTIPURPOSE/AUXADC)

1. Slave Select Channel → 'Slave Select Channel x'
2. MPx pin mode → 'Slave Select for Master SPI port'
3. MPx pin function → 'Multipurpose function'

The following table shows the mapping between the module's parameter and the register control window. Please note that for some other blocks, there is an offset of 1 between the module parameter and the register control window.

Use the following file and edit for your slave.

ADAU1361.xml

 version="1.0" standalone="no"?>
 IC="ADAU1361" IC_Address="112" Address_byte_length="2">
  >2017-03-16T05:12:14.2859851Z>
  >3.14.1.1593>
   modetype="Mode 0">
     instr="writeXbytes" len="3" addr="16384" ParamName="Reg1" DspName="IC 1">0F>
     instr="writeXbytes" len="8" addr="16386" ParamName="Reg2" DspName="IC 1">00 FD 00 0C 20 01>
     instr="delay" ParamName="IC 1.Delay" DspName="IC 1">00 64>
     instr="writeXbytes" len="3" addr="16405" ParamName="IC 1.Serial Port Control Registers.Serial Port Control 0" DspName="IC 1">00>
  >
>

Please follow the steps below to edit the XML for your Slave.

• Edit IC, IC_Address and Address_byte_length fields in xml. Please note that IC_Address should be an 8-bit I2C address in decimal format. Address_byte_length refers to the length, in bytes, of the external IC's address space.

 IC="ADAU1361" IC_Address="112" Address_byte_length="2">

• Add your register writes as shown below.

 instr="writeXbytes" len="8" addr="16386" ParamName="Reg2" DspName="IC 1">00 FD 00 0C 20 01>

Please match all the fields as follows. 
      instr => "writeXBytes" 
      len => Data Length in bytes+ Address_byte_length
      addr => Register Address in decimal (not hexadecimal)
      Then the value part should have the register values in Hexadecimal. A space should separate each data as shown in the example.   In this example len => 6 (data length)  + 2 (Address_byte_length) = 8

• You can add delays as shown below.

 instr="delay" ParamName="IC 1.Delay" DspName="IC 1">00 64>

Delay is in milliseconds (Hexadecimal Format)

1. ADAU145x