Dear Pascal,
Mine configuration in Bean CPU is:
#External bus: Enabled
>Program memory boot: Internal
>Data Memory: Internal & External
>Initialize OMR register: yes
#Data Bus
> Data Bus Width: 16
#Address Bus
> Address Bus Width: 23
#Chip Selects
> CS0: Enabled
- Base address: 0x00
- Block Size: 128K
- Read Wait states: 1
- Upper/Lower byte: Both Bytes Enable
- R/W: Read/Write
- Program/Data Space: Ps only/Disable
> CS1: Enabled
- Base address: 0x00
- Block size: 128K
- Read Wait states: 1
- Upper/Lower byte: Lower Byte Enable
- R/W: Read/Write
- Program/Data Space: DS only
> CS2: Enabled
- Base address: 0x00
- Block size: 128K
- Read Wait states: 1
- Upper/Lower byte: Upper Byte Enable
- R/W: Read/Write
- Program/Data Space: DS only
All right go explication, in my hardware application the CS0 is connected in RAM memory bank 1 and CS1 and CS2 are connected in RAM memory bank 2. What's my base address? sorry i'm newbie. How use the base address of CS0 for example? I looked the dataSheet, for the CS0 can use the address offset
$0 and address of EMI (external memory interface)
$00 F020 the result of address to
Base address is:
00F020 this is correct? I add in the tab
Build options a MemoryArea3 with size 128K, qualifier of EXTERNAL_DYNAMIC, and the Address is my Base Address? I dont know. Other question, i add the bean DSP_MEM for the use of external memory and set the one external memory with type RAM, size 128 and the start address? would be the my base address or in the external memory block of DSP_MEM i can use more of one blocks of the memory bank 1? You having one example of the use of external memory?
>>>>>>>>>
In CPU -> Properties
External memory : 2
Memory Block0
> Start Address: 1FFFFF
> Size: 128K
> Type: RAMVery thank you for the your help!
Message Edited by how determine pwm frequency on
2007-11-21 12:06 PM