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AD1981BL

AC ’97 SoundMAX® Codec

Analog Devices 

BIT_CLK

SYNC

tCLK_LOW

tCLK_HIGH

tCLK_PERIOD

tSYNC_LOW

tSYNC_HIGH

tSYNC_PERIOD

Figure 4. Clock Timing

BIT_CLK

tRISECLK

tFALLCLK

SYNC

tRISESYNC

tFALLSYNC

SDATA_IN

tRISEDIN

tFALLDIN

SDATA_OUT

tRISEDOUT

tFALLDOUT

Figure 5. Signal Rise and Fall Times

SLOT 1

SYNC

SLOT 2

BIT_CLK

WRITE TO

SDATA_OUT 0x20

DATA

PR4

SDATA_IN

tS2_PDOWN

BIT_CLK NOT TO SCALE

Figure 6. AC-Link Low Power Mode Timing

AD1981BL

Rev. A | Page 7 of 32

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