AD1843JS datasheet(17/64 Pages) AD

17 / 64 page

AD1843

REV. 0

–17–

LINE IN

MIC IN RIGHT

MIC IN LEFT

AUX1 IN

AUX2 IN

AUX3 IN

MONO IN

SUM IN

LINE1 OUT

HEADPHONE OUT

LINE2 OUT RIGHT

LINE2 OUT LEFT

MONO OUT

SYNC2

CONV1

BIT1

SERIAL

INTERFACE

DAA

SERIAL

INTERFACE

ADSP-21xx

DSP OR ASIC

AD1843 SOUNDCOMM

CODEC

IDMA PORT

OR PARALLEL

PORT

NTSC

HORIZONTAL

SYNC SIGNAL

HOST BUS

ISA OR PCI

EXTERNAL POWERED

MULTIMEDIA SPEAKERS

SPEAKERPHONE

AUDIO FROM DAT

OR CASSETTE

PC SPEAKER

PSTN

AUDIO FROM

EXTERNAL MPEG

DECODER

PC ATTENTION

“BEEPER” SIGNAL

AUDIO FROM

CD-ROM

EXTERNAL

WAVEFORM

SYNTHESIZER

Figure 6. Typical Configurations

3210

15 14 13 12

3210

15 14 13 12

3210

15 14 13 12

3210

15 14 13 12

512 BITS

MSB

512 BITS

256 BITS

SLOT 15

SLOT 0

SLOT 15

SLOT 0

SLOT 31

SLOT 16

256 BITS

SAMPLE PERIOD N

SAMPLE PERIOD N+1

SAMPLE PERIOD N+2

SAMPLE

PERIOD N+3

FRAME M

FRAME M+1

SDI OR SDO

SCLK

SDFS

FRS = 0

[DEFAULT 32 SLOTS PER FRAME, 2 SAMPLES PER FRAME SYNC]

MASTER MODE

NOTE THAT AD1843 FRAME RATE IS NOT RELATED TO SAMPLE RATES

Figure 7. FRS = 0, Master Mode Timing

3210

15 14 13 12

3210

15 14 13 12

3210

15 14 13 12

3210

15 14 13 12

256 BITS

MSB

256 BITS

SLOT 15

SLOT 0

SLOT 15

SLOT 0

SLOT 15

SLOT 0

SAMPLE PERIOD N

SAMPLE PERIOD N+1

SAMPLE PERIOD N+2

SAMPLE

PERIOD N+3

FRAME M

SDI OR SDO

SCLK

SDFS

FRS = 1

[16 SLOTS PER FRAME, 1 SAMPLE PER FRAME SYNC]

MASTER MODE

NOTE THAT SCLK CAN BE PROGRAMMED FOR EITHER 12.288 MHz

OR 16.384 MHz WHEN IN MASTER MODE

256 BITS

FRAME M+1

FRAME M+2

FRAME M+3

Figure 8. FRS = 1, Master Mode Timing

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