Epson Research and Development Page 75
Vancouver Design Center
Hardware Functional Specification S1D13505
Issue Date: 01/02/02 X23A-A-001-14
7.4.2 Power Save Status
Figure 7-23: Power Save Status and Local Bus Memory Access Relative to Power Save Mode
Note
Power Save can be initiated through either the SUSPEND# pin or Software Suspend Enable Bit.
Note
It is recommended that memory access not be performed after a Power Save Mode has been
initiated.
Table 7-22: Power Save Status and Local Bus Memory Access Relative to Power Save Mod e
Symbol Parameter Min Max Units
t1 Power Save initiated to rising edge of Power Save Status and the
last time memory access by the local bus may be performed. 129 130 Frames
t2 Power Save deactivated to falling edge of Power Save Status 12 MCLK
t3 Falling edge of Power Save Status to the earliest time the local bus
may perform a memory access 8MCLK
Power Sav e
t1
Power Save Status Bit
Memory Access not allowed allowed
t2
t3
allowed