DETAILED DESCRIPTION

USB INTERFACE

PCM2903B

Control data and audio data are transferred to the PCM2903B via D+ (pin 1) and D– (pin 2). All data to/from the

PCM2903B are transferred at full speed. The device descriprtor contains the information described in Table 2.

The device descriptor can be modified on request; contact a Texas Instruments representative for details.

Table 2. Device Descriptor

USB revision

2.0 compliant

Device class

0x00 (device-defined interface level)

Device subclass

0x00 (not specified)

Device protocol

0x00 (not specified)

Max packet size for end-point 0

8 bytes

Vendor ID

0x08BB (default value, can be modified)

Product ID

0x29B3 (default value, can be modified)

Device release number

1.0 (0x0100)

Number of configurations

1

Vendor strings

String #1 (see Table 4)

Product strings

String #2 (see Table 4)

Serial number

Not supported

The configuration descriptor contains the information described in Table 3. The configuration descriptor can be

modified on request; contact a Texas Instruments representative for details.

Table 3. Configuration Descriptor

Interface

Four interfaces

Power attribute

0xC0 (Self-powered, no remote wakeup)

Maximum power

0x0A (20 mA. Default value, can be modified)

The string descriptor contains the information described in Table 4. The string descriptor can be modified on

request; contact a Texas Instruments representative for details.

Table 4. String Descriptor

#0

0x0409

#1

Burr-Brown from TI (default value, can be modified)

#2

USB Audio CODEC (default value, can be modified)

18

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Product Folder Link(s): PCM2903B