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This version is outdated by a newer approved version.This version (28 Apr 2015 16:54) is a draft.Approvals: 0/1
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Table of Contents
Master Control Port I/O (ADAU145x)
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The master control port I/O block allows communication with one external device during DSP program initialization. Typically this block is used to configure an external device like a converter or codec. Communication (read or write) over the master control port bus (i2c or SPI) occurs only once at start-up of the DSP program, and prior to audio processing. The data tranferred between host and device is defined in a SigmaStudio sequence file which can be generated using the SigmaStudio sequence window.
How to configure the Control Port I/O block:
1) Drag the block into a schematic design.
2) Click the Configure… button and select the required protocol and settings for the external device.
3) Select a “Sequence File” that defines the desired communication with the device.
4) Click “OK”. The control port data will be embedded in the DSP program.
Control Port Properties
Protocol: The master control port bus protocol (SPI or I2C) of the slave device.
Bitrate: The master control port bus speed (I2C max 400kHz, SPI max 20MHz).
Default Chip/Device Address: 7bit Chip address for I2C.
Sub-Address Bytes: External devices address size, for example 16-bit addressing 2-byte, 24-bit addressing 3-byte.
Page Size: Maximum page size for writing to memories, ignore for other devices.
(SPI) R/W (Chip Address) Bytes: Command bytes is applicable, usually a 1-byte instruction for read, write, erase, etc.
(SPI) Write instruction: Instruction value for a write operation (0x0 for ADI audio devices, typically 0x2 for eeprom/flash)
(SPI) Read instruction: Instruction value for a read operation (0x1 for ADI audio devices, typically 0x3 for eeprom/flash)
(SPI) Write-Enable instruction: Instruction value for device write-enable operation (ignored for Master Control Port I/O Boot)
(SPI) Chip Erase instruction: Instruction value for device chip erase operation (ignored for Master Control Port I/O Boot)
(SPI) Chip Erase Time: Time delay required for chip erase to complete (ignored for Master Control Port I/O Boot)
Sequence File: Device write/read sequence to execute at boot time, define and save this file from SigmaStudio's sequence window.
resources/tools-software/sigmastudio/toolbox/mastercontrolport/mastercontrolportio.1430232848.txt.gz · Last modified: 28 Apr 2015 16:54 by John McCarty