mcf5307cft90b Freescale Semiconductor, Inc, mcf5307cft90b Datasheet - Page 273
mcf5307cft90b
Manufacturer Part Number
mcf5307cft90b
Description
Mcf5307 Coldfire Integrated Microprocessor User
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MCF5307CFT90B.pdf
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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
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
//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
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