Sundance SMT329 - Manual (Page 30)

VME
address
bit Global
address
bit Control 4
register
bit Description
31-24 - 31-24 High 8 bits
23-2 21-0 - Middle 22 bits
1 - 16 A1
0 - 17 A0 / -Lword
The VME address modifiers, DS0 and DS1 are copied directly from control register 4. The
VME bus request level is also specified in control register4.
So a TIM can directly address 16M bytes in the VME bus address space.
Note that the TIM global bus does not support byte addressing, so transfers to and from the
VME bus are always 32 bits wide.
4.4.6 TIM Global bus interface to the SRAM
This address space occupies global bus addresses in the following region:
0xDFE0 0000 to 0xDFFF FFFF.
This space occupies 2M 32 bit words or 8M bytes.
Note that the TIM global bus does not support byte addressing, so transfers to and from the
sram are always 32 bits wide.
User Manual SMT329 Page 30 of 52 Last Edited: 09/02/2007 10:58:00