MOSA

MS6821

4 Stereo inputs / 2W PA output integrated Audio DAC and Volume Control

REV 1.0

12

www.mosanalog.com

AUDIO TIMING AND FORMAT

The MS6821 accepts input serial data formats of 16-bit word length. Left and right data words are time multiplexed.

The MSB must always be first.

RIGHT

WS

BCK

DATA

LSB

MSB

t

r

t

HB

t

f

t

cr

t

LB

t

HW

t

SW

LEFT

t

SD

t

HD

Audio data format (BCK, WS, DATA)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Input LOW level

2

-

-

V

Input HIGH level

-

-

0.8

V

f

BCK

Input Clock Frequency

-

-

18.4

MHz

BR

Bit Rate Data Input

-

-

18.4

Mbits/s

f

WS

Word Select Input

-

-

384

kHz

Rise Time

-

-

12

ns

Fall Time

-

-

12

ns

Bit Clock Cycle Time

54

-

-

ns

Bit Clock High Time

15

-

-

ns

Bit Clock Low Time

15

-

-

ns

Data Set-up Time

12

-

-

ns

Data Hold Time to Bit Clock

2

-

-

ns

Word Select Hold Time

2

-

-

ns

Word Select Set-up Time

12

-

-

ns