SM5904BF 查看數據表（PDF） - Nippon Precision Circuits

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SM5904BF

compression and non compression type shock-proof memory controller

Nippon Precision Circuits  

ATT, MUTE settings 83

Bit Name

D7 ATT

D6 MUTE

D5 SOFT

D4

NS

D3 CMP12

D2

D1

D0

SM5904BF

Function

Attenuator enable

Forced muting (changes instantaneously)

Soft muting (changes smoothly when ON only)

Includes noise shaper function when encoding

12-bit comparison connect/ 16-bit comparison connect

83hex = 1000 0011

H operation Reset level

Attenuator ON

L

Mute ON

L

Soft mute

L

NS ON

L

12-bit comparison

L

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

Attenuation level settings 84

Bit Name

D7

K7

D6

K6

D5

K5

D4

K4

D3

K3

D2

K2

D1

K1

D0

K0

Function

MSB 2-1

2-2

2-3

2-4

2-5

2-6

2-7

LSB 2-8

84hex = 1000 0100

H operation Reset level

L

H

L

L

L

L

L

L

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

Option settings 85

Bit Name

D7

D6 RAMX2

D5 YFLGS

D4 YFCKP

D3 COMPFB

D2 COMP6B

D1 COMP5B

D0 COMP4B

Function

85hex = 1000 0101

H operation Reset level

External DRAM select

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

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

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

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

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

Full-bit compression mode

6-bit compression mode

5-bit compression mode

4-bit compression mode

used

L

L

L

L

H

L

L

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.

NIPPON PRECISION CIRCUITS-13

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