SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 87

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

7.14 Power Save Mode LCD Signal Timing - Hardware Suspend Mode
Tv
Ty
SPC8106
Symbol
t3a
t3b
411-1.0
SPC8106 outputs
LCD mode
t1
t2
t4
t5
SPC8106 input
LP, YD, UD[3:0],
XSCL, XSCL2,
LCAS#, UCAS#
= internal vertical retrace period
= 393,216Ts if CLKI or self-refresh mode is selected
(approximately13.9 ms for 28.322 MHz, 15.7 ms for 25.175 MHz)
= 1024 Tm if MEMEN Refresh clock source is selected
= 1024 Tp if 64 kHz PDCLK Refresh clock source is selected
= 512 Tp if 32 kHz PDCLK Refresh clock source is selected
= YD period, typically 12.8 ms
SUSPEND# asserted to LCDPWR# negated
LCDPWR# negated to LCD interface signals high-
impedance, or driven low (as selected by AUX[02] bit 1)
SUSPEND# negated to LCD interface signals driven
(CLKI selected as refresh clock source)
SUSPEND# negated to LCD interface signals driven
(self-refresh mode, MEMEN, or PDCLK selected as refresh
clock source)
LCD interface signals driven to LCDPWR# asserted
LCD interface signals high-impedance or low to LCAS#,
UCAS# asserted (to initialize DRAM self-refresh mode)
LD[3:0], WF
SUSPEND#
LCDPWR#
Figure 17 : Suspend Mode LCD Signal
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
Table 0-33 Suspend Mode LCD Signal Timing
Parameter
active
t1
X12-SP-001-07
t2
Timingsource: 8106foc_sm_lcd_sig_01.can
t5
or Low (as selected by AUX[02] bit 1)
Tv+3Ts
Min
2Ty
2Ty
Ts
Hardware Functional Specification
Hi-Z
Typ
t3
Ty + 4Ts
2Tv + Ty
Max
+4Ts
4Ts
3Ty
t4
Units
active
ns
ns
ns
ns
ns
ns
SP1-45