The PCM9211 is a complete analog and digital front-end for today's multimedia players and recorders

PCM9211

Manufacturer Part NumberPCM9211
DescriptionThe PCM9211 is a complete analog and digital front-end for today's multimedia players and recorders
ManufacturerTexas Instruments
PCM9211 datasheet
 


Specifications of PCM9211

Jitter(ps)50Sampling Rate(max)(khz)216
Power Supply(v)4.5-5.5 for Analog ,2.9-3.6 for DIXAdc Resolution(bits)24
Adc Sample Rate (ksps)96Control ModeSPI, I2C, Hardware
InputsPCM,S/PDIF, ADCOutputPCM,S/PDIF
Operating Temperature Range(c)-40 to 85Pin/package48LQFP
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Page 40/121

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PCM9211
SBAS495 – JUNE 2010
Digital Audio Interface Transmitter
Overview
The PCM9211 has an onboard Digital Audio Interface Transmitter (DIT) that transmits S/PDIF data from 7 kHz to
216 kHz, up to 24-bit audio data. The first 48 bits of the channel status buffer are programmable. The source for
the DIT is selectable from the built-in routing function of the PCM9211 as well as the dedicated inputs assigned
to the MPIOs.
Selection OF DIT Input Source
Selection of the DIT audio and clock sources is done using the Registers 60h/TXSSRC[2:0] and
60h/TXPSRC[2:0]. The system clock source for the DIT is selected using the Register 60h/TXSSRC[2:0]. The
PCM audio data source for the DIT (BCK. LRCK, and Data) is selected using the Register 60h/TXPSRC[2:0].
The DIT can also be operated in a standalone mode. In standalone mode, the data source is provided through
MPIO_C. See the
DIT Stand-Alone
DIT Output Biphase
The S/PDIF-encoded signal generated by the DIT module is available through the MPO0 and MPO1 pins. The
MPO selection registers (Register 78h/MPOxSEL[3:0]) can be set to '1101' to determine the DIT output through
one of these two pins.
In addition to the standard MPOx pins, the DIT output can also be multiplexed to the RECOUT pin, or back into
the DIR. An example of where this multiplexing might occur is in a jitter cleaner application. The DIR in the
PCM9211 has excellent jitter reduction. Data can be brought in from an auxiliary source, transmitted through the
DIT internally, then routed to the DIR. This process, in turn, cleans the clocks and provides a stable, well-clocked
PCM source. This feature is especially useful for jittery sources, such as HDMI.
Audio Data and Clock
The DIT can accept a 128f
, 256f
, or 512f
S
S
TXSCK[2:0]. A 216-kHz sampling frequency is supported by using the 128f
108-kHz sampling frequency can be supported up to a 512f
2
I
S, 24-bit left-justified, 24-bit right-justified, and 16-bit right-justified serial audio interface formats can be used.
Only slave mode is supported.
Table 10
the respective BCK and SCK frequencies
Table 10. Typical Audio Sampling, BCK, and SCK Frequencies
LRCK
f
S
8 kHz
0.512 MHz
11.025 kHz
0.7056 MHz
12 kHz
0.768 MHz
16 kHz
1.024 MHz
22.05 kHz
1.4112 MHz
24 kHz
1.536 MHz
32 kHz
2.048 MHz
44.1 kHz
2.8224 MHz
48 kHz
3.072 MHz
64 kHz
4.096 MHz
88.2 kHz
5.6448 MHz
96 kHz
6.144 MHz
128 kHz
8.192 MHz
176.4 kHz
11.2896 MHz
192 kHz
12.288 MHz
40
Submit Documentation Feedback
section for more details.
system clock. The clock ratio selection is set by using the Register
S
clock ratio.
S
shows the relationship between typical audio sampling frequencies and
BCK
64f
128f
S
S
1.024MHz
2.048 MHz
1.4112 MHz
2.8224 MHz
1.536 MHz
3.072 MHz
2.048 MHz
4.096 MHz
2.8224 MHz
5.6448 MHz
3.072 MHz
6.144 MHz
4.096 MHz
8.192 MHz
5.6448 MHz
11.2896 MHz
6.144 MHz
12.288 MHz
8.192 MHz
16.384 MHz
11.2896 MHz
22.5792 MHz
12.288 MHz
24.576 MHz
16.384 MHz
32.768 MHz
22.5792 MHz
45.1584 MHz
24.576 MHz
49.152 MHz
Product Folder Link(s):
PCM9211
www.ti.com
or 256f
system clock ratio. A
S
S
SCK
256f
512f
S
S
4.096 MHz
5.6448 MHz
6.144 MHz
8.192 MHz
11.2896 MHz
12.288 MHz
16.384 MHz
22.5792 MHz
24.576 MHz
32.768 MHz
45.1584 MHz
49.152 MHz
N/A
N/A
N/A
Copyright © 2010, Texas Instruments Incorporated