PCM2705CDBR

Manufacturer Part NumberPCM2705CDBR
DescriptionIC DAC 16BIT STEREO W/USB 28SSOP
ManufacturerTexas Instruments
Series-
TypeDAC, USB
PCM2705CDBR datasheets

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Specifications of PCM2705CDBR

ApplicationsUSB AudioMounting Type*
Package / Case*Lead Free Status / Rohs StatusLead free / RoHS Compliant
Other names296-29562-2  
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PCM2704C, PCM2705C
PCM2706C, PCM2707C
SBFS036 – AUGUST 2011
USB Interface
Control data and audio data are transferred to the PCM2704C/5C/6C/7C via the D+ pin (pin 9 for the
PCM2704C/5C, pin 23 for the PCM2706C/7C) and D– pin (pin 8 for the PCM2704C/5C, pin 22 for the
PCM2706C/7C). D+ should be pulled up with a 1.5-kΩ (±5%) resistor. To avoid back voltage in self-powered
operation, the device must not provide power to the pull-up resistor on D+ while V
All data to/from the PCM2704C/5C/6C/7C are transferred at full speed. The information shown in
provided in the device descriptor. Some parts of the device descriptor can be modified through external ROM
(PCM2704C/6C) or SPI (PCM2705C/7C).
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 endpoint 0
8 bytes
Vendor ID
0x08BB (default value, can be modified)
0x27C4/0x27C5/0x27C6/0x27C7 (These values correspond to the model number, and the value can
Product ID
be modified.)
Device release number
1.0 (0x0100)
Number of configurations
1
Vendor strings
BurrBrown from Texas Instruments (default value, can be modified)
Product strings
USB AUDIO
Serial number
Not supported
The information given in
Table 6
is contained in the configuration descriptor. Some parts of the configuration
descriptor can be modified through external ROM (PCM2704C/6C) or SPI (PCM2705C/7C).
CONFIGURATION DESCRIPTOR
Interface
Three interfaces
0x80 or 0xC0 (bus-powered or self-powered, depending on PSEL; no remote wake up. This value can
Power attribute
be modified.)
0x0A, 0x32, or 0xFA (20 mA for self-powered, 100 mA or 500 mA for bus-powered, depending on
Max power
PSEL and HOST. This value can be modified.)
The information listed in
Table 7
is contained in the string descriptor. Some parts of the string descriptor can be
modified through external ROM (PCM2704C/6C) or SPI (PCM2705C/7C).
STRING DESCRIPTOR
#0
#1
#2
16
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Table 5. Device Descriptor
DESCRIPTION
DAC (default value, can be modified)
Table 6. Configuration Descriptor
DESCRIPTION
Table 7. String Descriptor
DESCRIPTION
0x0409
BurrBrown from Texas Instruments (default value, can be modified)
USB AUDIO
DAC (default value, can be modified)
PCM2704C PCM2705C PCM2706C PCM2707C
www.ti.com
of the USB port is inactive.
BUS
Table 5
is
Copyright © 2011, Texas Instruments Incorporated

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