NIPPON PRECISION CIRCUITS-13

SM5907AF

Bit

Name

Function

H operation

Reset level

D7

D6

MUTE

Forced muting (changes instantaneously)

Mute ON

L

D5

D4

D3

CMP12

12-bit comparison connect/ 16-bit comparison connect

12-bit comparison

L

D2

D1

D0

1000 0011

83hex =

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

Bit

Name

Function

H operation Reset level

D7

RAMS1

DRAM type setting

L

RAMS1=0 RAMS2=0 when 16M DRAM(4M

× 4bit) × double

RAMS1=1 RAMS2=0 when 4M DRAM(1M

× 4bit) × single

D6

RAMS2

RAMS1=0 RAMS2=1 when 4M DRAM(1M

× 4bit) × double

L

RAMS1=1 RAMS2=1 when 16M DRAM(4M

× 4bit) × single

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

COMP5B

5-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.

MUTE, CMP12 settings 83

Option settings 85