SM5859AF Nippon Precision Circuits Inc, SM5859AF Datasheet - Page 14

• Manufacturer Part Number: SM5859AF
• Description: compression and non compression type antishock memory controller
• Manufacturer: Nippon Precision Circuits Inc

Attenuation level settings 84
Option settings 85
ATT, MUTE settings 83
D7
D6
D5
D4
D3
D2
D1
D0
Bit
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Bit
D7
D6
D5
D4
D3
D2
D1
D0
COMPFB
COMP6B
COMP5B
COMP4B
RAM4M
RAMX2
CMP12
YFCKP
YFLGS
MUTE
Name
SOFT
Name
Name
ATT
K7
K6
K5
K4
K3
K2
K1
K0
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),
- When YFLGS=0, YFCKP=0, YFCLK input falling edge, YFLAG=L
- When YFLGS=0, YFCKP=1, YFCLK input rising edge, YFLAG=L
FLAG6 set conditions (reset using status read command 90H)
12-bit comparison connect/ 16-bit comparison connect
4M (1M 4 bits)/1M (256K 4 bits) DRAM type setting
Soft muting (changes smoothly when ON only)
Forced muting (changes instantaneously)
- When YFLGS=1, YFCKP=1, YFLAG=H
- When YFLGS=1, YFCKP=0, YFLAG=L
Number of DRAMs setting (2 or 1)
Full-bit non compression mode
6-bit compression mode
5-bit compression mode
4-bit compression mode
Attenuator enable
SM5859AF
Function
Function
Function
MSB 2
LSB 2
2
2
2
2
2
2
-
-
-
-
-
-
-
-
1
2
3
4
5
6
7
8
NIPPON PRECISION CIRCUITS-14
Refer to Attenuation, Soft mute, Force mute.
Refer to Attenuation, Soft mute, Force mute
6-bit compression mode is selected.
84hex =
85hex =
83hex =
12-bit comparison
Attenuator ON
H operation
Mute ON
Soft mute
H operation Reset level
H operation Reset level
4M
2
1000 0100
1000 0101
1000 0011
Reset level
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L