3-54
Computer Group Literature Center Web Site
System Memory Controller (SMC)
3
each half of the SMC interfaces to 32 bits. rom_a_64
matches the value that was on the RD2 pin at power-up
reset. It cannot be changed by software.
rom a siz
The rom a siz control bits are the size of ROM/Flash for
Block A. They are encoded as shown in Table 3-11.
rom_a_rv rom_a_rv and rom_b_rv determine which if either of
Blocks A and B is the source of reset vectors or any other
access in the range $FFF00000 - $FFFFFFFF as shown in
the table below.
Table 3-11. ROM Block A Size Encoding
rom a siz
BLOCK
SIZE
%000
1MB
%001
2MB
%010
4MB
%011
8MB
%100
16MB
%101
32MB
%110
64MB
%111
Reserved
Table 3-12. rom_a_rv and rom_b_rv encoding
rom_a_rv
rom_b_rv
Result
0
0
Neither Block is the source of
reset vectors.
0
1
Block B is the source of reset
vectors.
1
0
Block A is the source of reset
vectors.
1
1
Block B is the source of reset
vectors.
Summary of Contents for MVME5100 Series
Page 1: ...MVME5100 Single Board Computer Programmer s Reference Guide V5100A PG2 September 2001 Edition ...
Page 16: ...xvi ...
Page 20: ...xx ...
Page 28: ...xxviii ...
Page 62: ...1 34 Computer Group Literature Center Web Site Product Data and Memory Maps 1 ...
Page 278: ...3 88 Computer Group Literature Center Web Site System Memory Controller SMC 3 ...
Page 288: ...4 10 Computer Group Literature Center Web Site Hawk Programming Details 4 ...
Page 320: ...Index IN 12 Computer Group Literature Center Web Site I N D E X ...