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Programming Notes and Examples S1D13505
Issue Date: 01/02/05 X23A-G-003-07
6.2.1 Registers

The Software Suspend Mode Enable bit initi ates Software suspend when set to 1. Setting

the bit back to 0 returns the controller back to normal mode.

The Suspend Refresh Select Bits specify the type of DRAM refresh used during suspend

mode. The type of DRAM refresh is as follows:

Note

The Suspend Refresh Select bits should never be changed while in suspend mode.

The Power Save Status bit is a read- only status bit which indicates the power-sa ve state of

the S1D13505. When this bit returns a 1, the panel is powered-off and the memory is in a

suspend memory refresh mode. When this bit returns a 0, the S1D13505 is either p owere d-

on, in transition of powering-on, or in transition of powering-off.

REG[1Ah] Power Save Configuration Register
Power Save
Status (RO) n/a n/a n/a LCD Power
Disable
Suspend
Refresh
Select Bit 1
Suspend
Refresh
Select Bit 0
Software
Suspend
Mode Enable
REG[1Ah] Power Save Configuration Register
Power Save
Status (RO) n/a n/a n/a LCD Power
Disable
Suspend
Refresh
Select Bit 1
Suspend
Refresh
Select Bit 0
Software
Suspend
Mode Enable
Table 6-1: Suspend Refresh Selection
Suspend Refresh Select Bits [1:0] DRAM Refresh Type
00 CAS-before-RAS (CBR) refresh
01 Self-Refresh
1X No Refresh
REG[1Ah] Power Save Configuration Register
Power Save
Status (RO) n/a n/a n/a LCD Power
Disable
Suspend
Refresh
Select Bit 1
Suspend
Refresh
Select Bit 0
Software
Suspend
Mode Enable