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DETAILED DESCRIPTION

USB INTERFACE

PCM2901

PCM2903

SLES034C – MARCH 2002 – REVISED NOVEMBER 2007

Control data and audio data are transferred to the PCM2901/2903 via D+ (pin 1) and D– (pin 2). All data to/from

the PCM2901/2903 is transferred at full speed. The device descriprtor contains the information described in

Table 1. The device descriptor can be modified on request; contact a Texas Instruments representative for

details.

Table 1. Device Descriptor

USB revision

1.1 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

0x2901 / 0x2903 (default value, can be modified)

Device release number

1.0 (0x0100)

Number of configurations

1

Vendor strings

String #1 (see Table 3)

Product strings

String #2 (see Table 3)

Serial number

Not supported

The configuration descriptor contains the information described in Table 2. The configuration descriptor can be

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

Table 2. Configuration Descriptor

Interface

Four interfaces

Power attribute

0xC0 (Self-powered, no remote wakeup)

Maximum power

0x00 (0 mA. Default value, can be modified)

The string descriptor contains the information described in Table 3. The string descriptor can be modified on

request; contact a Texas Instruments representative for details.

Table 3. String Descriptor

#0

0x0409

#1

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

#2

USB audio codec (default value, can be modified)

20

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Product Folder Link(s): PCM2901 PCM2903