mcf5407 Freescale Semiconductor, Inc, mcf5407 Datasheet - Page 307

• Manufacturer Part Number: mcf5407
• Description: Mcf5407 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

11.5.6 Initialization Code
The following assembly code initializes the SDRAM example.
move.w
move.w
move.l
move.l
move.l
move.l
move.l
move.l
move.l
move.l
move.l
move.l
move.l
move.l
move.l
move.l
move.l
register
move.l
Power-Up Sequence:
Precharge Sequence:
Refresh Sequence:
Mode Register Initialization Sequence:
#0x8026, d0
d0, DCR
#0xFF880300, d0
d0, DACR0
#0x00740075, d0
d0, DMR0
#0xFF880308, d0
d0, DACR0
#0xBEADDEED, d0
d0, 0xFF880000
#0xFF888300, d0
d0, DACR0
#0x00600075, d0
d0, DMR0
#0xFF888340, d0
d0, DACR0
#0x00000000, d0
d0, 0xFF800800
Chapter 11. Synchronous/Asynchronous DRAM Controller Module
//Initialize DCR
//Initialize DACR0
//Initialize DMR0
//Set DACR0[IP]
//Write to memory location to init. precharge
//Enable refresh bit in DACR0
//Mask bit 19 of address
//Enable DACR0[IMRS]; DACR0[RE] remains set
//Access
SDRAM
address
to
initialize
SDRAM Example
11-39
mode