0x01 0xA0 0x02 0x05 | Texas Instruments TLV320AIC3107EVM-K manual

USB-MODEVM Protocol

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If the command is sent with no problem, the returning byte [0] is the same as the sent one logically ORed with 0x20 - in the preceding first example, the returning packet is:

[0]0x31

[1]0xA0

[2]0x02

[3]0x05

[4]0xAA

[5]0x55

If for some reason the interface fails (for example, the I2C device does not acknowledge), it comes back as:

[0]0x51 --> interface INTF_ERROR

[1]0xA0

[2]0x02

[3]0x05

[4]0xAA

[5]0x55

If the request is malformed, that is, the interface byte (byte [0]) takes on a value which is not as preciously described, the return packet is:

[0]0x93 --> the user sent 0x13, which is not valid, so 0x93 returned

[1]0xA0

[2]0x02

[3]0x05

[4]0xAA

[5]0x55

The preceding examples used writes. Reading is similar:

Read two bytes from device starting at register 5 of an I2C device with address A0:

[0]0x01

[1]0xA0

[2]0x02

[3]0x05

The return packet is:

[0]0x21

[1]0xA0

[2]0x02

[3]0x05

[4]0xAA

[5]0x55

assuming that the preceding values starting at Register 5 were actually written to the device.

48

USB-MODEVM Protocol

SLAU261–November 2008

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Texas Instruments TLV320AIC3107EVM-K quick start 0x01 0xA0 0x02 0x05

Contents

EVM-Compatible Device Data Sheets TLV320AIC3107EVM-K USB-MODEVM SW2 Settings EVM Overview FeaturesTLV320AIC3107EVM-K Block Diagram Introduction TLV320AIC3107EVM-K Block Diagram USB-MODEVM Interface Board 2 TLV320AIC3107EVM Jumpers and Switches Default Configuration and ConnectionsUSB-MODEVM SW2 Settings List of Stand-alone Jumpers Power Connections EVM Connections TLV320AIC3107EVM-K Setup and InstallationSoftware Installation Quick Start Tabs Quick Start USB-MODEM ConfigurationsTLV320AIC3107EVM Software Quick Start Preset Configurations Quick Start Preset Configurations Tab Main Software Screen With Indicators and Functions Main Software Screen Detailed TLV320AIC3107 Block Diagram Audio Input/ADC Tab Audio Input/ADC Tab Bypass Paths Tab Bypass Paths Tab Audio Interface Tab Audio Interface Tab Configuring the Codec Clocks and Fsref Calculation Clocks Tab Use With PLL Setting ADC and DAC Sampling RatesUse Without PLL GPIO1 Tab GPIO1 Tab AGC Tab AGC Tab Left AGC Settings Filters Tab Filters Tab Digital Effects Filter ADC ADC FiltersHigh-Pass Filter DAC Digital Effects Filter DAC FiltersDe-emphasis Filters Digital Effects Filters Shelf Filters EQ Filters Analog Simulation Filters Preset Filters User Filters 10 DAC/Line Outputs Tab 3.6 3D Effect DAC Controls Line Output Mixers HP Output Stage Configuration Tab Output Stage Configuration Tab High Power Outputs Tab HP Outputs Tab Class-D Output Tab Class-D Output Tab Command Line Interface Tab Command Line Interface Tab File Menu Analog Input/Output Connectors Appendix a EVM Connector DescriptionsAnalog Interface Connectors Table A-1. Analog Input/Output Connectors Block a and Block B Digital Interface Connectors J16 and J17 Table A-2. Block a and Block B Digital Interface Pinout Power Supply Connector Pin Header, J15 Table A-3. Power Supply Pinout Appendix B TLV320AIC3107EVM Schematic TP4 Avdd DAC Appendix B Figure C-1. Assembly layer Appendix C TLV320AIC3107EVM Layout Views Figure C-3. Layer Figure C-5. Bottom Layer Appendix D TLV320AIC3107EVM Bill of Materials Table D-1. TLV320AIC3107EVM Bill of Materials Not Appendix E USB-MODEVM Schematic Ti a HIGH-PERFORMANCE Analog Division Appendix F USB-MODEVM Bill of Materials Table F-1. USB-MODEVM Bill of Materials Designators Description Manufacturer USB-MODEVM Protocol Table G-2. Data Packet ConfigurationAppendix G USB-MODEVM Protocol Table G-1. USB Control Endpoint Hidsetreport Request 0x12 0xA0 0x02 0x05 0xAA 0x55 0x01 0xA0 0x02 0x05 Gpio Capability Table G-3. Gpio Pin Assignments Writing Scripts Writing Scripts Evaluation BOARD/KIT Important Notice FCC Warning Important Notice