SM5902AF Nippon Precision Circuits Inc, SM5902AF Datasheet - Page 20

• Manufacturer Part Number: SM5902AF
• Description: compression and non compression type shock-proof memory controller
• Manufacturer: Nippon Precision Circuits Inc

Write command supplementary information
80H (MS command)
- MSWREN
- MSWACL
- MSRDEN
81H (Extension I/O port settings)
82H (Extension I/O port output data settings)
When 1: Encode sequence starts
When 0: Encode sequence stops
When 1: Initializes the write address (WA)
When 0: No operation
When 1: Decode sequence starts
When 0: Decode sequence stops
Invalid when MSON is not 1 within the
same 80H command
Invalid when FLAG6=1
Invalid when OVFL=1
Invalid when a compare-connect start
command (MSDCN2=1 or MSDCN1=1)
occurs simultaneously
Direct connect if a compare-connect
sequence is already operating
Does not perform decode sequence if
MSON=1.If there is no valid data, decode
sequence temporarily stops. But, because
the MSRDEN flag setting is maintained as
is, the sequence automatically re-starts
when valid data appears.
SM5902AF
- MSDCN2, MSDCN1
- WAQV
- MSON
-MSRACL
When 1: Initializes the read address (RA)
When 0: No operation
When 1 and 1: 3-pair compare-connect sequence
When 1 and 0: 2-pair compare-connect sequence
When 0 and 1: Direct connect sequence starts
When 0 and 0: Compare-connect sequence stops.
When 1: The immediately preceding YBLKCK
When 0: No operation
When 1: Memory system turns ON and shock-
When 0: Memory system turns OFF and through-
starts
starts
No operation if a compare-connect
sequence is not operating.
falling-edge timing WA (write address)
becomes the VWA (valid write address).
proof operation starts
mode playback starts. (In this mode, the
attenuator is still active.)
NIPPON PRECISION CIRCUITS-20