SM5844AF

NIPPON PRECISION CIRCUITS—17

Direct Mute (DMUTE)

Direct mute ON/OFF

Reset mute

Internal operating status (STATE)

Internally, all functions are performed using 20-bit

serial data, and the conversion rate and filter type are

automatically selected for output. Output data is in

20-bit front-packed format.

Note that when THRUN is LOW, LRCO and BCKO are not guaranteed to be synchronized to the STATE

output.

Table 6. DMUTE operation

DMUTE

Function

LO W

N o r mal data is output from the next output word (mute

OFF)

HIGH

0 data is output from the next output word (mute ON)

Table 7. RSTN mute operation

RSTN

Function

L O W

0 data is output from the next output word (mute ON)

HIGH

N o r mal data is output from the 3073rd output word

( m ute OFF)

Table 8. Bit function

Output bit position

Content

1st to 18th

(Output data cycle/input data cycle)

− 9

Ex.

1st

18th

00.1111111111110111

⇒ 1.0 times

01.1111111111110111

⇒ 2.0 times (1/2 conversion rate ratio)

00.0111111111110111

⇒ 0.5 times (2.0 conversion rate ratio)

19th

D A 1

Selected filter type

20th

D A 0

D A 1

D A 0

Filter

Mode

0

0

Up conver ter

1

1

0

44.1 to 48 kHz

2

0

1

32 to 44.1 kHz

3

1

1

32 to 48 kHz

4