Datasheet

LRCK
LSB
L-channel
R-channel
BCK
DATA
MSB LSB
MSB LSB
161521 161521
- ,
DATA
MSB LSB MSB
21 24
2
21 2423
DATA
MSB LSB
MSB LSB
21 3231 21 3231
1t
S
Audio data word = 16-bit, BCK = 32, 48, 64f
S
Audio data word = 24-bit, BCK = 48, 64f
S
Audio data word = 32-bit, BCK = 64f
S
PCM5100A , PCM5101A , PCM5102A
PCM5100A-Q1 , PCM5101A-Q1 , PCM5102A-Q1
www.ti.com SLAS859C –MAY 2012–REVISED MAY 2015
Feature Description (continued)
Table 2. PCM510xA Audio Data Formats, Bit Depths and Clock Rates
MAX LRCK
CONTROL MODE FORMAT DATA BITS SCK RATE [x f
S
] BCK RATE [x f
S
]
FREQUENCY [f
S
]
128 – 3072
Up to 192 kHz 64, 48, 32
(≤50MHz)
Hardware Control I
2
S/LJ 32, 24, 20, 16
384 kHz 64, 128 64, 48, 32
The PCM510xA requires the synchronization of LRCK and system clock, but does not need a specific phase
relation between LRCK and system clock.
If the relationship between LRCK and system clock changes more than ±5 SCK, internal operation (using an
onchip oscillator) is initialized within one sample period and analog outputs are forced to the bipolar zero level
until resynchronization between LRCK and system clock is completed.
If the relationship between LRCK and BCK are invalid more than 4 LRCK periods, internal operation (using an
onchip oscillator) is initialized within one sample period and analog outputs are forced to the bipolar zero level
until resynchronization between LRCK and BCK is completed.
9.3.2.2 PCM Audio Data Formats
The PCM510xA supports industry-standard audio data formats, including standard I
2
S and left-justified. Data
formats are selected using the FMT (pin 16), Low for I
2
S, and High for Left-justified. All formats require binary
twos-complement, MSB-first audio data; up to 32-bit audio data is accepted.
Figure 13. Left Justified Audio Data Format
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Product Folder Links: PCM5100A PCM5101A PCM5102A PCM5100A-Q1 PCM5101A-Q1 PCM5102A-Q1