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PCM1721 Datasheet(PDF) 9 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation.
Part # PCM1721
Description  DIGITAL-TO-ANALOG CONVERTER WITH PROGRAMMABLE PLL
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Manufacturer  BURR-BROWN [Burr-Brown (TI)]
Direct Link  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

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9
PCM1721
Sampling Frequencies-LRCIN (kHz)
Half of Standard Sampling Freq
16
22.05
24
Standard Sampling Freq
32
44.1
48
Double of Standard Sampling Freq
64
88.2
96
PCM1721’s internal PLL can be programmed for nine
different sampling frequencies (LRCIN), as shown in Table
I. The internal sampling clocks generated by the various
programmed frequencies are shown in Table II. Because of
finite limitations in the PLL’s M and N counters, errors
associated with specific frequencies are shown.
TABLE II. Sampling Frequencies vs Internal System Clock.
FUNCTION
DEFAULT MODE
Input Audio Data Format Selection
Normal Format
Normal Format
I2S Format
Input Audio Data Bit Selection
16/20/24 Bits
16 Bits
Input LRCIN Polarity Selection
Lch/Rch = High/Low
Lch/Rch = High/Low
Lch/Rch = Low/High
De-emphasis Control
OFF
Soft Mute Control
OFF
Attenuation Control
0dB
Lch, Rch Individually
Lch, Rch Individually Fixed
Lch, Rch Common
Infinite Zero Detection Circuit Control
OFF
Operation Enable (OPE)
Enabled
Sample Rate Selection
Internal System Clock Selection
256fS
384fS
384fS
Double Sampling Rate Selection
Standard Sampling Rate—44.1/48/32kHz
Standard Sampling Rate
Double Sampling Rate—88.2/96/32kHz
Half Sampling Rate—22.05/24/16kHz
Sampling Frequency
44.1kHz Group
44.1kHz
48kHz Group
32kHz Group
Analog Output Mode
L, R, Mono, Mute
Stereo
TABLE III. Selectable Functions.
SPECIAL FUNCTIONS
PCM1721 includes several special functions, including digi-
tal attenuation, digital de-emphasis, soft mute, data format
selection and input word resolution. These functions are
controlled using a three-wire interface. MD (pin 8) is used
for the program data, MC (pin 7) is used to clock in the
program data, and ML (pin 6) is used to latch in the program
data. Table III lists the selectable special functions.
HALF OF STANDARD
STANDARD
DOUBLE OF STANDARD
FREQ
SAMPLING FREQUENCY
SAMPLING FREQUENCY
SAMPLING FREQUENCY
ERROR
256fS (kHz)
384fS (kHz)
256fS (kHz)
384fS (kHz)
256fS (kHz)
384fS (kHz)
%
INTERNAL
SYSTEM
CLOCK
(MHz)
16
22.05
24
16
22.05
24
32
44.1
48
32
44.1
48
64
88.2
96
64
88.2
96
4.096
4.0982
0.0537
5.6448
5.64543
0.0112
6.144
6.13634
–0.1247
6.144
6.13634
–0.1247
8.4672
8.46604
–0.0137
9.216
9.21426
–0.0189
8.192
8.18849
–0.0428
11.2896
11.29087
0.0112
12.288
12.2946
0.0537
12.288
12.2946
0.0537
16.934
16.93215
–0.0133
18.432
18.42851
–0.0189
16.384
16.37699
–0.0428
22.5792
22.58174
0.0112
24.576
24.5892
0.0537
24.576
24.5892
0.0537
33.8688
33.8643
–0.0133
36.864
36.85702
–0.0189
TABLE I. Sampling Frequencies.


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