Page 102

Epson Research and Development

 

Vancouver Design Center

 

 

8.2.6 Power Save Configuration Registers

Power Save Configuration Register

 

 

 

 

 

 

 

 

 

REG[1Ah]

 

 

 

 

 

 

 

 

 

 

 

RW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LCD Power

 

Suspend

 

Suspend

Software

n/a

n/a

 

n/a

 

n/a

 

Refresh

 

Refresh

Suspend

 

 

Disable

 

 

 

 

 

 

 

 

 

 

Select Bit 1

 

Select Bit 0

Mode Enable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

bit 3

 

LCD Power Disable

 

 

 

 

 

 

 

 

 

 

When this bit = 1 the LCDPWR output is directly forced to the Off state. The LCDPWR “On/Off”

 

 

 

state is configured by MD10 at the rising edge of RESET#. When this bit = 0 the LCDPWR output

 

 

 

is controlled by the panel on/off sequencing logic. See Table 5-8: “Summary of Power On / Reset

 

 

 

Options,” on page 31.

 

 

 

 

 

 

 

bits 2-1

 

Suspend Refresh Select Bits [1:0]

 

 

 

 

 

 

 

 

 

 

These bits specify the type of DRAM refresh to use in Suspend mode.

 

 

 

 

 

 

 

Table 8-10: Suspend Refresh Selection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Suspend Refresh Select Bits [1:0]

 

DRAM Refresh Type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

00

 

 

 

 

CBR Refresh

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

01

 

 

 

 

Self-Refresh

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1x

 

 

 

 

No Refresh

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note

 

 

 

 

 

 

 

 

 

 

 

 

These bits should not be changed when suspend mode is enabled.

 

 

 

bit 0

 

Software Suspend Mode Enable

 

 

 

 

 

 

 

 

 

 

When this bit = 1 software suspend mode is enabled. When this bit = 0 software suspend mode is disabled.

8.2.7 Miscellaneous Registers

Miscellaneous Disable Register

 

 

 

 

 

REG[1Bh]

 

 

 

 

 

 

 

RW

 

 

 

 

 

 

 

 

 

Host Interface

n/a

 

n/a

n/a

n/a

n/a

n/a

Half Frame

Disable

 

 

 

 

 

 

 

Buffer Disable

bit 7

 

Host Interface Disable

 

 

 

 

 

 

This bit must be programmed to 0 to enable the Host Interface. This bit goes high on reset. When

 

 

this bit is high, all memory and all registers except REG[1Ah] (read-only), REG[28h] through

 

 

REG[2Fh], and REG[1Bh] are inaccessible.

 

 

 

S1D13504

Hardware Functional Specification

X19A-A-002-18

Issue Date: 01/01/30

Page 108
Image 108
Epson S1D13504 manual Power Save Configuration Registers, Miscellaneous Registers, Miscellaneous Disable Register