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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Serial Programming Interface (PCM2705C/7C)
The PCM2705C/7C supports a serial interface (SPI) to program the descriptor and to set the HID state.
Descriptor data are described in the
Table 13
lists the respective timing characteristics.
MS
t
(MLS)
t
(MCH)
MC
t
(MCY)
MD
SYMBOL
t
MC pulse cycle time
(MCY)
t
MC low-level time
(MCL)
t
MC high-level time
(MCH)
t
MS high-level time
(MHH)
t
MS falling edge to MC rising edge
(MLS)
t
MS hold time
(MLH)
t
MD hold time
(MDH)
t
MD setup time
(MDS)
Figure 30
shows the SPI write timing sequence.
(1) Single Write Operation
MS
MC
MD
MSB
(2) Continuous Write Operation
MS
MC
MD
MSB
Copyright © 2011, Texas Instruments Incorporated
Product Folder Link(s):
External ROM Descriptor
section.
t
(MCL)
LSB
t
(MDS)
t
(MDH)
Figure 29. SPI Timing Diagram
Table 13. SPI Timing Characteristics
PARAMETER
16 Bits
LSB
MSB
16 Bits
N
Frames
?
LSB
MSB
LSB
MSB
N Frames
Figure 30. SPI Write Operation
PCM2704C PCM2705C PCM2706C PCM2707C
PCM2704C, PCM2705C
PCM2706C, PCM2707C
SBFS036 – AUGUST 2011
Figure 29
illustrates the SPI timing;
t
(MHH)
50% of V
DD
t
(MLH)
50% of V
DD
50% of V
DD
MIN
MAX
UNIT
100
ns
50
ns
50
ns
100
ns
20
ns
20
ns
15
ns
20
ns
LSB
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