WM8912GEFLSLASHV datasheet(54/128 Pages) WOLFSON

Part #	WM8912GEFL/V

Description	Ultra Low Power DAC with Headphone Driver for Portable Audio Applications

PDF	128 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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54 / 128 page

WM8912

Production Data

PD, Rev 4.0, September 2010

The direction of these signals and the clock frequencies are controlled as described in the “Digital

Audio Interface Control” section.

BCLK and LRCLK can be enabled as outputs in Slave mode, allowing mixed Master/Slave operation

- see “Digital Audio Interface Control”.

OPERATION WITH TDM

Time division multiplexing (TDM) allows multiple devices to transfer data simultaneously on the same

bus. The WM8912 supports TDM in master and slave modes for all data formats and word lengths.

TDM is enabled and configured using register bits defined in the “Digital Audio Interface Control”

section.

Figure 27 TDM with WM8912 as Master

Figure 28 TDM with other DAC as Master

Figure 29 TDM with Processor as Master

Note: The WM8912 is a 24-bit device. If the user operates the WM8912 in 32-bit mode then the 8

LSBs will be ignored on the DAC input. It is recommended to add a pull-down resistor to the

DACDAT line in TDM mode in this case.

WM8912GEFL/V Datasheet(PDF) 54 Page - Wolfson Microelectronics plc