Data Sheet

AD1939

Rev. E | Page 23 of 32

Table 13. Pin Function Changes in TDM and AUX Modes (Replication of Table 12)

Pin Mnemonic

Stereo Modes

TDM Modes

AUX Modes

ASDATA1

ADC1 Data Out

ADC TDM Data Out

TDM Data Out

ASDATA2

ADC2 Data Out

ADC TDM Data In

AUX Data Out 1 (to Ext. DAC 1)

DSDATA1

DAC1 Data In

DAC TDM Data In

TDM Data In

DSDATA2

DAC2 Data In

DAC TDM Data Out

AUX Data In 1 (from Ext. ADC 1)

DSDATA3

DAC3 Data In

DAC TDM Data In 2 (Dual-Line Mode)

AUX Data In 2 (from Ext. ADC 2)

DSDATA4

DAC4 Data In

DAC TDM Data Out 2 (Dual-Line Mode)

AUX Data Out 2 (to Ext. DAC 2)

ALRCLK

ADC LRCLK In/ADC LRCLK Out

ADC TDM Frame Sync In/ADC TDM Frame Sync Out

TDM Frame Sync In/TDM Frame Sync Out

ABCLK

ADC BCLK In/ADC BCLK Out

ADC TDM BCLK In/ADC TDM BCLK Out

TDM BCLK In/TDM BCLK Out

DLRCLK

DAC LRCLK In/DAC LRCLK Out

DAC TDM Frame Sync In/DAC TDM Frame Sync Out

AUX LRCLK In/AUX LRCLK Out

DBCLK

DAC BCLK In/DAC BCLK Out

DAC TDM BCLK In/DAC TDM BCLK Out

AUX BCLK In/AUX BCLK Out

AUX

ADC 1

LRCLK

BCLK

DATA

MCLK

AUX

ADC 2

LRCLK

BCLK

DATA

MCLK

AUX

DAC 1

AUX

DAC 2

LRCLK

BCLK

DATA

MCLK

LRCLK

BCLK

DATA

MCLK

30MHz

12.288MHz

SHARC IS RUNNING IN SLAVE MODE

(INTERRUPT-DRIVEN)

AD1939

TDM MASTER

AUX MASTER

ASDATA2

DSDATA4

DBCLK

DLRCLK

DSDATA2

DSDATA3

MCLKI/XI

ASDATA1 ALRCLK ABCLK DSDATA1

Figure 26. Example of AUX Mode Connection to SHARC (AD1939 as TDM Master/AUX Master Shown)