SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 84

• Manufacturer Part Number: SPC8106
• Description: LCD/CRT VGA CONTROLLER
• Manufacturer: S-MOS Systems

7.12 Power Save Mode LCD Signal Timing - Software Power Save Modes
Ty = YD period, typically 12.8 ms
Hardware Functional Specification
Symbol
SP1-42
XSCL, XSCL2, LP,
t1
t2
t3
t4
t5
SPC8106 outputs
LCD mode
SPC8106 input
LCAS#, UCAS#
YD, UD[3:0],
LD[3:0], WF
Power Save Register IOW# negated (valid Power Save
Mode set) to LCDPWR# negated
LCDPWR# negated to LCD interface signals high-
impedance, or driven low (as selected by AUX[02] bit 1)
Power Save Register IOW# negated (return to active
mode) to LCD interface signals active
LCD interface signals active to LCDPWR# asserted
LCD interface signals high-impedance or low to LCAS#,
UCAS# asserted (to initialize DRAM self-refresh mode,
Power Save Mode 4 only)
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
LCDPWR#
IOW#
Table 0-31 Power Save Mode LCD Signal Timing
Figure 15 : Power Save Mode LCD Signal Timing
Parameter
active
t1
X12-SP-001-07
t2
t5
or Low (as selected by AUX[02] bit 1)
Min
2Ty
2Ty
Ts
Hi-Z
Typ
t3
4Ts+20
Ty+4Ts
Max
3Ty
+20
t4
Units
active
411-1.0
ns
ns
ns
ns
ns
SPC8106