BCK

tBCH

tBCL

tBCY

tDS

tDH

tBL

tLB

DATA

LRCK

0. 5 * DVDD

0. 5 * DVDD

0. 5 * DVDD

(Input)

(Input)

(Input)

PCM5100, PCM5101, PCM5102

www.ti.com

SLAS764B – MAY 2011 – REVISED SEPTEMBER 2012

PCM Audio Data Formats and Timing

The PCM510x supports industry-standard audio data formats, including standard I2S and left-justified. Data

formats are selected using the FMT (pin 16), Low for I2S, and High for Left-justified.

All formats require binary 2s complement, MSB-first audio data. Figure 13 shows a detailed timing diagram for

the serial audio interface.

Figure 13. PCM510x Serial Audio Timing - Slave

Table 7. Audio Interface Slave Timing

Parameters

Min

Max

Units

tBCY

BCK Pulse Cycle Time

40

ns

tBCL

BCK Pulse Width LOW

16

ns

tBCH

BCK Pulse Width HIGH

16

ns

tBL

BCK Rising Edge to LRCK Edge

8

ns

tLB

LRCK Edge to BCK Rising Edge

8

ns

tDS

DATA Set Up Time

8

ns

tDH

DATA Hold Time

8

ns

fBCK

BCK frequency @ DVDD=3.3V

24.576

MHz

Copyright © 2011–2012, Texas Instruments Incorporated

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Product Folder Links: PCM5100 PCM5101 PCM5102