WM5102 datasheet(121/334 Pages) WOLFSON

121 / 334 page

Production Data

WM5102

PD, June 2014, Rev 4.2

121

Figure 51 shows an example of I2S format. Four enabled channels are shown, allocated to timeslots 0

through to 3.

Figure 51 I2S Example

Figure 52 shows an example of Left Justified format. Six enabled channels are shown.

Figure 52 Left Justifed Example

TDM OPERATION BETWEEN THREE OR MORE DEVICES

The AIF operation described above illustrates how multiple audio channels can be interleaved on a

single TXDAT or RXDAT pin. The interface uses Time Division Multiplexing (TDM) to allocate time

periods to each of the audio channels in turn.

This form of TDM is implemented between two devices, using the electrical connections illustrated in

Figure 43 or Figure 44.

It is also possible to implement TDM between three or more devices. This allows one CODEC to

receive audio data from two other devices simultaneously on a single audio interface, as illustrated in

Figure 53, Figure 54 and Figure 55.

The WM5102 provides full support for TDM operation. The TXDAT pin can be tri-stated when not

transmitting data, in order to allow other devices to transmit on the same wire. The behaviour of the

TXDAT pin is configurable, to allow maximum flexibility to interface with other devices in this way.

Typical configurations of TDM operation between three devices are illustrated in Figure 53, Figure 54

and Figure 55.

WM5102 Datasheet(PDF) 121 Page - Wolfson Microelectronics plc