This version (06 Apr 2021 06:51) is a draft.
Approvals: 0/1The Previously approved version (05 Feb 2020 06:40) is available.
Approvals: 0/1The Previously approved version (05 Feb 2020 06:40) is available.
Table of Contents
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Index Selectable Demultiplexer
Description
The Index Selectable Demultiplexer block route an input to one of many possible output pins. The output is selected based on a control signal value from an Index Lookup Table, RMS Table, or DC Input block. The slew variant of Index Selectable Demux allows smooth transition when switching outputs.
Variants
- Mono (Configurable Slew Mode)
- Stereo (Configurable Slew Mode)
- Stereo (SW Slew)
- Mono (No Slew)
- Stereo (No Slew)
Targets Supported
| Name | ADSP-214xx | ADSP-215xx/SC5xx | ADAU145x/146x |
|---|---|---|---|
| ———————————————- | ——————-- | ——————————-- | ———————— |
| Mono (Configurable Slew Mode) | NA | NA | S |
| Stereo (Configurable Slew Mode) | NA | NA | S |
| Stereo (SW Slew) | B | B | NA |
| Mono (No Slew) | S | S | NA |
| Stereo (No Slew) | S | S | NA |
Pins
Input
| Name | Type | Description |
|---|---|---|
| ———————- | ————-- | ———————- |
| InputSel_In | Control | Channel selection control input |
| InputX | Audio | Input Channel X |
Output
| Name | Type | Description |
|---|---|---|
| ———————- | ————-- | ———————- |
| OutputX | Audio | Output Channel X |
Note:
- X - Channel Index
Configurable Parameters
| GUI Parameter | Default Value | Range | Function Description |
|---|---|---|---|
| —————————————- | ———————- | —————— | —————————————- |
| NumChannels | 2 | 2 to 20 | Number of channels. Applicable to Mono modules. Change in this value requires re-compilation |
| NumStereoChannels | 2 | 2 to 20 | Number of stereo channels. Applicable to Stereo modules. Change in this value requires re-compilation |
| StepSize | 11 | 8 to 16 | Slew step size for SW slew modules |
| SlewType | RC Slew | NA | Slew type. Applicable to Configurable Slew Mode modules |
| CustomVal | 0x208A | NA | Custom slew value. Applicable to Configurable Slew Mode modules |
DSP Parameters
| Parameter Name | Description | ADSP-214xx/SC5xx/215xx | ADAU145x/146x |
|---|---|---|---|
| —————————- | ———————————————————————————————— | —————————————- | ———————— |
| slew_mode | Slew mode and value for HW slew (Configurable Slew Mode modules) | NA | Integer |
| StepSize | Slewing Step Size for SW Slew modules | Float | NA |
DSP Parameter Computation
StepSize = 2^(-1 * StepSize)
resources/tools-software/sigmastudiov2/modules/muxesanddemuxes/indexselectabledemultiplexer.txt · Last modified: 06 Apr 2021 06:51 by John Joseph