Datasheet

1117

SAM9G45 [DATASHEET]

Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15

44.11 Register Configuration Guide

Program the PIO Controller to enable LCD signals.

Enable the LCD controller clock in the Power Management Controller.

44.11.1 STN Mode Example

STN color(R,G,B) 320*240, 8-bit single scan, 70 frames/sec, Master clock = 60 MHz

Data rate: 320*240*70*3/8 = 2.016 MHz

HOZVAL = ((3*320)/8) - 1

LINEVAL = 240 -1

CLKVAL = (60 MHz/2.016 MHz) - 1 = 29

LCDCON1 = CLKVAL << 12

LCDCON2 = LITTLEENDIAN | SINGLESCAN | STNCOLOR | DISP8BIT| PS8BPP;

LCDTIM1 = 0;

LCDTIM2 = 10 | (10 << 21);

LCDFRMCFG = (HOZVAL << 21) | LINEVAL;

LCDMVAL = 0x80000004;

DMAFRMCFG = (7 << 24) + (320 * 240 * 8) / 32;

44.11.2 TFT Mode Example

This example is based on the NEC TFT color LCD module NL6448BC20-08

TFT 640*480, 16-bit single scan, 60 frames/sec, pixel clock frequency = [21 MHz..29 MHz] with a typical value =

25.175 MHz.

The Master clock must be (n + 1)*pixel clock frequency

HOZVAL = 640 - 1

LINEVAL = 480 - 1

If Master clock is 100 MHz

CLKVAL = (100 MHz / 25.175 MHz) - 1 = 3

VFP = (12 -1), VBP = (31-1), VPW = (2-1), VHDLY = (2-1)

HFP = (16-1), HBP = (48 -1), HPW = (96-1)

LCDCON1 = CLKVAL << 12

SINGLESCAN | TFT

LCDTIM1 = VFP | (VBP << 8) | (VPW << 16) | (VHDLY << 24)

LCDTIM2 = HBP | (HPW << 8) | (HFP << 21)

LCDFRMCFG = (HOZVAL << 21) | LINEVAL

LCDMVAL = 0

DMAFRMCFG = (7 << 24) + (640 * 480* 16) / 32;