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SSD1901QL5

TFT Graphics Controller

Solomon Systech  

The start address is programmed as follows :

WindowStartAddress = (REG[02h],REG[01h]) Words

REG[03h] Floating Window Buffer Memory Start Address Register (LSB)

Address = 1FF83h

Memory

Start

Address

Bit 7

Memory

Start

Address

Bit 6

Memory

Start

Address

Bit 5

Memory

Start

Address

Bit 4

Memory

Start

Address

Bit 3

Memory

Start

Address

Bit 2

Memory

Start

Address

Bit 1

Read/Write

Memory

Start

Address

Bit 0

REG[04h] Floating Window Buffer Memory Start Address Register (MSB)

Address = 1FF84h

Memory

Start

Address Bit

15

Memory

Start

Address Bit

14

Memory

Start

Address Bit

13

Memory

Start

Address Bit

12

Memory

Start

Address Bit

11

Memory

Start

Address Bit

10

Memory

Start

Address Bit

9

Read/Write

Memory

Start

Address Bit

8

REG[03h] bits 7-0

REG[04h] bits 7-0

Floating Window Buffer Memory Start Address Bits [15:0]

These bits determine theword address of the start of Floating Window Buffer Memory for Floating Window

mode. These registers are effective in Floating Window mode only (REG[00h] bit 4, 3 = 1)

The start address is programmed as follows :

MemoryStartAddress = (REG[04h],REG[03h]) Words

REG[05h] Words per line Register

Address = 1FF85h

Words per

line Bit 7

Words per

line Bit 6

Words per

line Bit 5

Words per

line Bit 4

Words per

line Bit 3

Words per

line Bit 2

Words per

line Bit 1

Read/Write

Words per

line Bit 0

REG[06h] Words per line Register (MSB)

Address = 1FF86h

Read/Write

Words per

0

0

0

0

0

0

0

line Bit 8

REG[05h] bit 7-0

REG[06h] bit 1

Words per line Bits [8:0]

These bits determine words per line for Window /Floating Window features. This register is effective in

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

This register must be programmed with a value calculated as follows :

REG [06h ], REG [05h ] = H-----o----r--i--z---o----n---t--a---l--W------i--n---d----o---w----S----i--z---e--(---p----i--x---e---l--s--)- – 1

2

1FFh is the maximum value of this register for a horizontal resolution of 1024 pixels.

SOLOMON

REV 1.1

07/2001

SSD1901

9

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