option_boot.h

来自「arm7下面控制D12的程序源码」· C头文件 代码 · 共 61 行

;**************************OPTIONS*******************************

_RAM_STARTADDRESS  EQU    0x0c000000

_ISR_STARTADDRESS   EQU   0x0c7fff00 ;GCS7:64M DRAM/SDRAM


;BUSWIDTH; 16,32
                GBLA    BUSWIDTH
BUSWIDTH	SETA    32

;copy form flash to SDRAM
COPY_START EQU 0x1000
COPY_END   EQU 0x100000


;This value has to be TRUE on ROM program.
;This value has to be FALSE in RAM program.
;                GBLL    PLLONSTART
;PLLONSTART      SETL    {TRUE}

	GBLA	PLLCLK
PLLCLK		SETA	60000000

	[	PLLCLK = 40000000	
M_DIV	EQU	0x48	;Fin=10MHz Fout=40MHz
P_DIV	EQU	0x3
S_DIV	EQU	0x2		
	]

	[	PLLCLK = 50000000	
M_DIV	EQU	0x2a	;Fin=10MHz Fout=50MHz
P_DIV	EQU	0x3
S_DIV	EQU	0x1	
	]

	[	PLLCLK = 60000000	
M_DIV	EQU	0x34	;Fin=10MHz Fout=60MHz
P_DIV	EQU	0x3
S_DIV	EQU	0x1
;M_DIV	EQU	0x34	;Fin=4MHz Fout=60MHz
;P_DIV	EQU	0x0
;S_DIV	EQU	0x1
;M_DIV	EQU	0x48	;Fin=3MHz Fout=60MHz
;P_DIV	EQU	0x0
;S_DIV	EQU	0x1
	]

	[	PLLCLK = 66000000	
M_DIV	EQU	0x3a	;Fin=10MHz Fout=75MHz
P_DIV	EQU	0x3
S_DIV	EQU	0x1		
	]

	[	PLLCLK = 75000000	
M_DIV	EQU	0x43	;Fin=10MHz Fout=75MHz
P_DIV	EQU	0x3
S_DIV	EQU	0x1		
	]
;************************************************
		END