lcd.rst

来自「LCD的程序 3D效果的LCD 很有参考价值」· RST 代码 · 共 65 行

///////////////////////////////////////////////
///// Memc settings for Samsung 8MB DRAM /////
///////////////////////////////////////////////

// Config reg (24MHz MEMCLK)
//ASSIGN [0x8fff0000].L=0x87d5

// Config reg (150MHz MEMCLK)
ASSIGN [0x8fff0000].L=0x8735 

//refresh interfal ***change to more appropiate value
ASSIGN [0x8fff0004].L=0x5e

//sram1 timing ***change to more appropiate value
ASSIGN [0x8fff0010].L=0x5577

//refresh control
ASSIGN [0x8fff0008].L=0x1

// precharge
ASSIGN [0x8fff000c].L=0xb0400

//auto refresh #1
ASSIGN [0x8fff000c].L=0xd0000

//auto refresh #2
ASSIGN [0x8fff000c].L=0xd0000

//auto refresh #3
ASSIGN [0x8fff000c].L=0xd0000

//auto refresh #4
ASSIGN [0x8fff000c].L=0xd0000

//auto refresh #5
ASSIGN [0x8fff000c].L=0xd0000

//auto refresh #6
ASSIGN [0x8fff000c].L=0xd0000

//auto refresh #7
ASSIGN [0x8fff000c].L=0xd0000

//auto refresh #8
ASSIGN [0x8fff000c].L=0xd0000

//load mode reg  ***see above, also note the 0xF on bits [15:12]
ASSIGN [0x8fff000c].L=0xf0031

WAIT 1

//Remap
ASSIGN [0x90070000].L=0x1

WAIT 1

//change PLL for 150M Hz CPU clock
ASSIGN [0x900B0000].L=0x00000100

//WAIT 1
//activate PLL change
ASSIGN [0x900B0004].L=0x1

WAIT 1