SM5904BF Nippon Precision Circuits Inc, SM5904BF Datasheet - Page 12

• Manufacturer Part Number: SM5904BF
• Description: compression and non compression type shock-proof memory controller
• Manufacturer: Nippon Precision Circuits Inc

Command table
Write command summary
MS command 80
Extension I/O settings 81
Extension I/O output data settings 82
Extension I/O port input/output settings
Extension port HIGH/LOW output level
A port setting is invalid if that port has already been defined as an input using the 81H command above.
Shock-proof memory system settings
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Bit
D7
D6
D5
D4
D3
D2
D1
D0
MSWREN
MSWACL
MSRDEN
MSDCN2
MSDCN1
MSRACL
UC4WD
UC3WD
UC2WD
UC1WD
UC4OE
UC3OE
UC2OE
UC1OE
WAQV
MSON
Name
Name
Name
MSDCN2=H, MSDCN1=H: 3-pair comparison start
MSDCN2=H, MSDCN1=L: 2-pair comparison start
MSDCN2=L, MSDCN1=H: Direct-connect start
MSDCN2=L, MSDCN1=L: Connect operation stop
Extension I/O port UC4 input/output setting
Extension I/O port UC3 input/output setting
Extension I/O port UC2 input/output setting
Extension I/O port UC1 input/output setting
Extension I/O port UC4 output data setting
Extension I/O port UC3 output data setting
Extension I/O port UC2 output data setting
Extension I/O port UC1 output data setting
Decode sequence start/stop
Encode sequence start/stop
Memory system ON
Write address reset
Read address reset
SM5904BF
Q data valid
Function
Function
Function
NIPPON PRECISION CIRCUITS-12
81hex =
80hex =
82hex =
H operation Reset level
H operation
H operation Reset level
H output
H output
H output
H output
Output
Output
Output
Output
Valid
Reset
Reset
Start
Start
ON
1000 0001
1000 0000
1000 0010
Reset level
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L