NIPPON PRECISION CIRCUITS-13

SM5905AF

Bit

Name

Function

H operation

Reset level

D7

ATT

Attenuator enable

Attenuator ON

L

D6

MUTE

Forced muting (changes instantaneously)

Mute ON

L

D5

SOFT

Soft muting (changes smoothly when ON only)

Soft mute

L

D4

NS

Includes noise shaper function when encoding

NS ON

L

D3

CMP12

12-bit comparison connect/ 16-bit comparison connect

12-bit comparison

L

D2

D1

D0

1000 0011

83hex =

Refer to "Attenuation", "Soft mute", "Force mute", "12-bit comparison connection".

Bit

Name

Function

H operation Reset level

D7

K7

MSB 2

L

D6

K6

2

H

D5

K5

2

L

D4

K4

2

L

D3

K3

2

L

D2

K2

2

L

D1

K1

2

L

D0

K0

LSB 2

L

1000 0100

84hex =

Refer to "Attenuation", "Soft mute", "Force mute".

Bit

Name

Function

H operation Reset level

D7

D6

RAMX2

External DRAM select

used

L

D5

YFLGS

FLAG6 set conditions (reset using status read command 90H)

L

- When YFLGS=0, YFCKP=0, YFCLK input falling edge, YFLAG=L

- When YFLGS=0, YFCKP=1, YFCLK input rising edge, YFLAG=L

D4

YFCKP

- When YFLGS=1, YFCKP=0, YFLAG=L

L

- When YFLGS=1, YFCKP=1, YFLAG=H

D3

COMPFB

Full-bit compression mode

L

D2

COMP6B

6-bit compression mode

H

D1

COMP8B

8-bit compression mode

L

D0

COMP4B

4-bit compression mode

L

1000 0101

85hex =

When the number of compression bits is set incorrectly (2 or more bits in D0 to D3 are set to 1 or all bits are set to 0),

6-bit compression mode is selected.

ATT, MUTE settings 83

Attenuation level settings 84

Option settings 85