Section 7 Bus State Controller (BSC)
Rev. 2.00 Mar 09, 2006 page 255 of 906
REJ09B0292-0200
7.1.5
Address Map
The address map, which has a memory space of 320 Mbytes, is divided into five spaces
.
The types
and data width of devices that can be connected are specified for each space
.
The overall space
address map is shown in table 7.3
.
Since the spaces of the cache area and the cache-through area
are actually the same, and the maximum memory space that can be connected is 160 Mbytes. This
means that when address H'20000000 is accessed in a program, the data accessed is actually in
H'00000000.
The chip has 16-kbyte RAM as on-chip memory. The on-chip RAM is divided into an X area and
a Y area, which can be accessed in parallel with the DSP instruction. See the
SH-1/SH-2/SH-DSP
Programming Manual
for more information.
There are several spaces for cache control. These include the associative purge space for cache
purges, address array read/write space for reading and writing addresses (address tags), and data
array read/write space for forced reads and writes of data arrays.
Table 7.3
Address Map
Address
Space
Memory
Size
H'00000000–H'01FFFFFF
CS0 space, cache area
Ordinary space or burst
ROM
32 Mbytes
H'02000000–H'03FFFFFF
CS1 space, cache area
Ordinary space
32 Mbytes
H'04000000–H'05FFFFFF
CS2 space, cache area
Ordinary space or
synchronous DRAM
*
2
32 Mbytes
H'06000000–H'07FFFFFF
CS3 space, cache area
Ordinary space,
synchronous DRAM
*
2
, or
DRAM
32 Mbytes
H'08000000–H'09FFFFFF
CS4 space, cache area
Ordinary space (I/O
device)
32 Mbytes
H'0A000000–H'0FFFFFFF Reserved
*
1
H'10000000–H'1000DFFF
Reserved
*
1
H'1000E000–H'1000EFFF On-chip X RAM area
4 kbytes
H'1000F000–H'1001DFFF Reserved
*
1
H'1001E000–H'1001EFFF On-chip Y RAM area
4 kbytes
H'1001F000–H'1FFFFFFF Reserved
*
1
H'20000000–H'21FFFFFF
CS0 space, cache-through
area
Ordinary space or burst
ROM
32 Mbytes
H'22000000–H'23FFFFFF
CS1 space, cache-through
area
Ordinary space
32 Mbytes
Содержание SH7616
Страница 10: ...Rev 2 00 Mar 09 2006 page x of xxvi ...
Страница 132: ...Section 2 CPU Rev 2 00 Mar 09 2006 page 106 of 906 REJ09B0292 0200 ...
Страница 568: ...Section 12 16 Bit Free Running Timer FRT Rev 2 00 Mar 09 2006 page 542 of 906 REJ09B0292 0200 ...
Страница 582: ...Section 13 Watchdog Timer WDT Rev 2 00 Mar 09 2006 page 556 of 906 REJ09B0292 0200 ...
Страница 662: ...Section 14 Serial Communication Interface with FIFO SCIF Rev 2 00 Mar 09 2006 page 636 of 906 REJ09B0292 0200 ...
Страница 706: ...Section 16 Serial I O SIO Rev 2 00 Mar 09 2006 page 680 of 906 REJ09B0292 0200 ...
Страница 820: ...Section 19 Pin Function Controller PFC Rev 2 00 Mar 09 2006 page 794 of 906 REJ09B0292 0200 ...
Страница 932: ...Appendix D Package Dimensions Rev 2 00 Mar 09 2006 page 906 of 906 REJ09B0292 0200 ...
Страница 935: ...SH7616 Hardware Manual ...