WM1811A datasheet(35/328 Pages) WOLFSON

tên linh kiện	WM1811A

Giải thích chi tiết về linh kiện	Multi-Channel Audio Hub CODEC for Smartphones

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Production Data

WM1811A

PD, November 2013, Rev 4.1

DIGITAL AUDIO INTERFACE - TDM MODE

When TDM operation is used on the ADCDATn pins, it is important that two devices do not attempt to

drive the ADCDATn pin simultaneously. To support this requirement, the ADCDATn pins can be

configured to be tri-stated when not outputting data.

The timing of the ADCDATn tri-stating at the start and end of the data transmission is described in

Figure 5 below.

BCLK

ADCDAT

ADCDAT set-up time

ADCDAT release time

ADCDAT undriven (tri-state)

ADCDAT valid (CODEC output)

ADCDAT valid

ADCDAT undriven (tri-state)

Figure 5 Audio Interface Timing- TDM Mode

Test Conditions

The following timing information is valid across the full range of recommended operating conditions.

PARAMETER

MIN

TYP

MAX

UNIT

TDM Timing - Master Mode

ADCDATsetup time from BCLKfalling edge

ADCDATrelease time from BCLKfalling edge

TDM Timing - Slave Mode

ADCDAT setup time from BCLK falling edge

ADCDAT release time from BCLK falling edge

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