GMS30C7201 Datasheet, PDF (78/352 Pages) Hynix Semiconductor – 60MHz operation frequency Low power consumption

SDRAM Controller
C_[1:0]
P
W
R
S_[1:0]
A
Value = 0 if a two-bank device
CAS latency
C_[1]
C_[0]
CAS latency
0
0
Reserved
0
1
1
1
0
2
1
1
3
Table 8-5: CAS latency
Set priority device for the Video bus
Value = 1 if the VGA is the priority device
Value = 0 if the LCD is the priority device
Write buffer enable
Value = 1 if the write buffer is enabled
Value = 0 if the write buffer is disabled
Normal SDRAM controller refresh enable
Value = 1 if the SDRAM controller provides refresh control
Value = 0 if the SDRAM controller does not provide refresh
SDRAM controller Status, read-only
S_[0]
0
0
1
1
Auto pre-charge on ASB accesses
A = 1 auto pre-charge (default)
A = 0 no auto pre-charge
S_[1]
Status
0
Idle
1
Busy
0
Self Refresh
1
Reserved
Table 8-6: SDRAM controller status
8-6
GMS30C7201 Data Sheet