DIT4192

19

SBOS229B

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INPUT

FUNCTION

MONO

Stereo/Mono Mode Selection

MONO

Status

0

Stereo Mode

1

Mono Mode

MDAT

Mono Mode Audio and Channel Status Data Selection

MDAT

Status

0

Source is Left Channel for Audio data, and Channel A for CS data.

1

Source is Right Channel for Audio data, and Channel B for CS data.

TABLE IX. Mono Mode Configuration Settings for Hardware Mode Operation.

FIGURE 15. Hardware Mode Example for Dual-Channel Transmitter Operation.

Dual-Wire operation requires that each DIT4192 operates in

Mono mode, which is supported in both Software and Hard-

ware control modes. In Mono mode, the DIT4192 transmits

two consecutive samples of a single channel for both the

Channel A and Channel B sub-frames, effectively doubling

the sampling rate. The audio serial port channel used for

sampling audio and channel status data is selectable in both

Software and Hardware control modes.

In Software mode, the MONO, MDAT, and MCSD bits in

as the source channel for audio and channel status data.

Refer to the register definition for details regarding the setting

of these bits.

In Hardware mode, the MONO (pin 21) and MDAT (pin 20)

inputs are used to enable mono mode, as well as selecting

the source channel for audio and channel status data.

Table IX shows the available options for MONO and MDAT

selection. Figure 15 illustrates a simple Hardware mode

configuration for implementing Dual-Channel operation using

two DIT4192 transmitters.

SCLK

SYNC

SDATA

M/S

11

12

13

14

13

12

11

14

TX+

TX–

Right

Channel

Output

Output

Circuit

(See Figs. 12-14)

SDATA

SYNC

SCLK

M/S

TX+

TX–

Left

Channel

Output

Output

Circuit

(See Figs. 12-14)

DIT4192

DIT4192

ADC

DATA

LRCK

BCK

Master Clock

Generator

To All Devices

18

17

18

17

V

IO

21

20

MONO

MDAT

MONO

MDAT

V

IO

21

20

NOTE: To simplify the drawing, not all pins are shown here.