Epson Research and Development Page 129
Vancouver Design Center
Hardware Functional Specification S1D13504
Issue Date: 01/01/30 X19A-A-002-18
13.3 Power Save Mode Function Summary
Note
(1) except for RAMDAC registers.
(2) Yes if CBR suspend mode refresh is selected.
13.4 Pin States in Power Save Modes
Note
1. FPFRAME and FPLINE are forced to their inactive states as defined by REG[0Ch] bit 6
and REG[07h] bit 6 respectively.
2. Selectable: may be CBR refresh, self-refresh or no refresh at all.
3. DACWR#, DACRD#, DACRS0, DACRS1 are active but DACCLK is disabled.
4. Active for non-DAC register access only.
Table 13-1: Power Save Mode Function Summary
Function
Power Save Mode (PSM)
Normal
(Active) Software
Suspend Hardware
Suspend
Display Active? Yes No No
Register Access Possible? Yes Yes (1) No
Memory Access Possible? Yes No No
Host Bus Interface Running? Yes Yes No
Memory Interface Running? Yes No (2) No (2)
Table 13-2: Pin States in Power Save Modes
Pins
Pin State
Normal
(Active) Software
Suspend Hardware
Suspend
LCD outputs Active Forced Low (1) Forced Low (1)
LCDPWR On Off Off
DRAM outputs Active Refresh Only (2) Refresh Only (2)
CRT / DAC outputs Active Disabled (3) Disabled (3)
Host Interface outputs Active Active (4) Disabled