sm5907af Seiko NPC Corp., sm5907af Datasheet - Page 17

• Manufacturer Part Number: sm5907af
• Description: Compression And Non Compression Type Shock-proof Memory Controller
• Manufacturer: Seiko NPC Corp.

ENCOD
DECOD
MSEMP
OVFL
name
Flag
method
READ
READ
READ
READ
Read
91H
bit 7
91H
bit 6
91H
bit 5
91H
bit 4
Meaning
Meaning
Meaning
Meaning
Reset
Reset
Reset
Reset
Set
Set
Set
Set
MSWREN=1 and MSDCN1=1, the ENCOD flag is reset and compare-connect operation starts.
- By the 80H command when MSDCN1=1 or MSDCN2=1 (compare-connect start command)
Note. Reset conditions have priority over set conditions. For example, if the 80H command has
- When a read address clear (MSRACL) or write address clear (MSWACL) command is issued
- Indicates that the encode sequence (input data entry, encoding, DRAM write) is operating
(Note: This flag is not set when WA=RA through an address initialize or reset operation.)
- When the connect has been performed after receiving a direct connect command
- By a new 80H command when MSRDEN=1 and the MSEMP flag=0 (above)
- When conforming data is detected during compare-connect operation
- Indicates that the decode sequence (read from DRAM, decoding,
- When the read address (RA) is advanced by the decode sequence
- When the write address (WA) exceeds the read address (RA).
= RA (address from which the next read would take place)
SM5907AF
- Indicates that the valid data residual has become 0
- Indicates a write to external DRAM overflow state
- When the VWA (final valid data's next address)
- By the 80H command when MSWREN=1
- By the 80H command when MSWREN=0
- By the 80H command when MSON=0
attenuation, data output) is operating
- Whenever the above does not apply
- Whenever the above does not apply
- When the FLAG6 flag=1 (above)
- When the OVFL flag=1 (above)
- After external reset
- After external reset
NIPPON PRECISION CIRCUITS-17