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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Figure 21
illustrates the connections for the XTI and XTO pins for both a resonator connection and an external
clock input connection.
CL1
Resonator
XTI
CL2
R
D
XTO
(Optional)
PCM9211
Resonator Connection
Figure 21. XTI and XTO Connection Diagram
In XTI mode, the output clocks (SCKO, BCKO, and LRCKO) are generated from the XTI source clock.
Register 24h/OSCAUTO controls whether or not the internal oscillator functions while it is not required. When
using the DIR as a clock source, the XTI source is not required; thus, the internal oscillator can be switched off.
There is a constraint, however, that when the DIR wide mode is being set (for example, in 192-kHz support), the
XTI is always used. The sampling frequency calculator also requires the XTI source.
XMCKO (the XTI clock buffered output) provides a buffered (and divided) XTI clock that can be output to
MPIO_A. Register 24h/XMCKEN controls whether the XMCKO should be muted or not, and Register
24h/XMCKDIV controls the division factor.
DIR Data Description
Decoded Serial Audio Data Output and Interface Format
The PCM9211 supports the following four data formats for the decoded data:
16-bit MSB First, Right-Justified
24-bit MSB First, Right-Justified
24-bit MSB First, Left-Justified
2
24-bit MSB First, I
S
Decoded data are MSB first and twos complement in all formats.
The format of the decoded data is selected by the RXFMT[2:0] register. The possible data formats are shown in
Table
7.
Table 7. DIR Serial Audio Data Output Format Set by RXFMT[2:0]
DIR SERIAL AUDIO DATA OUTPUT FORMAT
24-bit MSB First, Right-Justified
16-bit MSB First, Right-Justified
24-bit MSB First, I
24-bit MSB First, Left-Justified
Copyright © 2010, Texas Instruments Incorporated
Crystal
OSC
24.576 MHz
Circuit
Internal Clock
External
Clock
Must be open
RXFMT[2:0] SETTING
RXFMT2
0
0
2
S (Default)
1
1
Product Folder Link(s):
PCM9211
PCM9211
SBAS495 – JUNE 2010
Crystal
OSC
24.576 MHz
Circuit
Internal Clock
XTI
XTO
PCM9211
External Clock Input Connection
RXFMT1
RXFMT0
0
0
1
1
0
0
0
1
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