SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 77

• Manufacturer Part Number: SPC8104
• Description: VGA LCD CONTROLLER
• Manufacturer: S-MOS Systems

10.2 Power Save Mode Function Summary.
See “Implementation Notes” following for further details.
SPC8104
Display Active
I/O access allowed
Memory access allowed
DRAM refresh maintained
Internal LUT active
Sequencer running
internal clock rate reduced
Display refresh circuitry active
Refresh generated from CLKI
(Sequencer running)
Refresh generated from CLKI
(Sequencer stopped)
Refresh generated from
MEMEN
Refresh generated from
PDCLK
Self-refresh
256cycle/4ms, /32ms refresh
selectable
LCD Signals
UD[3:0], LD[3:0]
YD, LP, WF
XSCL
LCDPWR#
CPU Signals
LA[23:20], A[19:0], D[15:0],
IOR#, IOW#, IOEN#, BHE#,
ALE, RESET
MEMR#, MEMW#, MEMEN
Clocks
CLKI
412-1.0
Function
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
Active State
Normal or
Active
Active
Active
active
active
active
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
n/a
No
No
No
L
Doze Mode 1
Power Down
X15-SP-001-08.1
Inactive
note 16
State
Active
active
active
active
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
n/a
No
No
No
No
No
L
L
Power Save Mode (PSM)
Doze Mode 2
Power Down
note 14
Active
State
Active
Active
active
active
active
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
n/a
No
No
No
L
Hardware Functional Specification
can be masked
except LUT
Software
Suspend
note 1, 2
masked
note 17
note 13
note 13
note 15
option
option
note 1
option
note 2
option
note 3
note 4
active
L/HiZ
L/HiZ
Yes,
Yes
Yes
n/a
n/a
No
No
No
No
No
H
can be masked
note 5, 6, 7, 8
Hardware
Suspend
note 1, 2
masked
masked
note 13
note 13
note 15
option
option
note 1
option
note 2
option
note 3
L/HiZ
L/HiZ
Yes
Yes
n/a
n/a
No
No
No
No
No
No
H
SP1-51