SSD1901QL5 Просмотр технического описания (PDF) - Solomon Systech

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SSD1901QL5

TFT Graphics Controller

Solomon Systech  

6 REGISTERS

6.1 Register Mapping

The SSD1901 registers are located in the upper 128 bytes of the 128K byte SSD1901 address range. The registers

are accessible when CS# = 0 and AB[16:0] are in the range 1FF80h through 1FFFFh.

6.2 Register Descriptions

Unless specified otherwise, all register bits are reset to 0 during power up. All bits marked “0” must be programmed as

zero. All bits marked “1” must be programmed as one.

REG[00h] Window Features Code Register

Address = 1FF80h

Read/Write

Window

0

0

0

Window

mode

0

Window

Window

features

selection

Blinking

Invert

bits 4

bits 3

bits 1

bits 0

Window features

When this bit = 0, Standard mode is selected. When this bit = 1, Window features is selected.

Window mode selection

When this bit = 0, Fixed Window mode is selected. When this bit = 1, Floating Window mode is selected.

This bit is effective in Window features is selected (REG[00h] bit 4 = 1)

Window Blinking

When this bit = 0, Window Blinking for Window / Floating Window mode is disabled. When this bit = 1,

Window Blinking for Window / Floating Window mode is enabled. This bit is effective in Winodw features

is selected (REG[00h] bit 4 = 1).

Window Invert

When this bit = 0, Window Invert for Window / Floating Window mode is disabled. When this bit = 1, Win-

dow Invert for Window / Floating Window mode is enabled. This bit is effective in Window features is se-

lected (REG[00h] bit 4 = 1).

REG[01h] Window area Start Address Register (LSB)

Address = 1FF81h

Window

Start

Address

Bit 7

Window

Start

Address

Bit 6

Window

Start

Address

Bit 5

Window

Start

Address

Bit 4

Window

Start

Address

Bit 3

Window

Start

Address

Bit 2

Window

Start

Address

Bit 1

Read/Write

Window

Start

Address

Bit 0

REG[02h] Window area Start Address Register (MSB)

Address = 1FF82h

Window

Start

Address Bit

15

Window

Start

Address Bit

14

Window

Start

Address Bit

13

Window

Start

Address Bit

12

Window

Start

Address Bit

11

Window

Start

Address Bit

10

Window

Start

Address Bit

9

Read/Write

Window

Start

Address Bit

8

REG[01h] bits 7-0

REG[02h] bits 7-0

Window Area Start Address Bits [15:0]

These bits determine the word address of the start of window area. These registers are effective in Win-

dow features is selected (REG[00h] bit 4 = 1)

SSD1901

8

REV 1.1

07/2001

SOLOMON

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