HD6417616 RENESAS [Renesas Technology Corp], HD6417616 Datasheet - Page 281

• Manufacturer Part Number: HD6417616
• Description: 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7600 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

7.1.5
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
H'00000000–H'01FFFFFF
H'02000000–H'03FFFFFF
H'04000000–H'05FFFFFF
H'06000000–H'07FFFFFF
H'08000000–H'09FFFFFF
H'0A000000–H'0FFFFFFF Reserved *
H'10000000–H'1000DFFF
H'1000E000–H'1000EFFF
H'1000F000–H'1001DFFF
H'1001E000–H'1001EFFF
H'1001F000–H'1FFFFFFF Reserved *
H'20000000–H'21FFFFFF
H'22000000–H'23FFFFFF
Address Map
Address Map
Space
CS0 space, cache area
CS1 space, cache area
CS2 space, cache area
CS3 space, cache area
CS4 space, cache area
Reserved *
On-chip X RAM area
Reserved *
On-chip Y RAM area
CS0 space, cache-through
area
CS1 space, cache-through
area
1
1
1
1
Rev. 2.00 Mar 09, 2006 page 255 of 906
Memory
Ordinary space or burst
ROM
Ordinary space
Ordinary space or
synchronous DRAM *
Ordinary space,
synchronous DRAM *
DRAM
Ordinary space (I/O
device)
Ordinary space or burst
ROM
Ordinary space
Section 7 Bus State Controller (BSC)
2
2
REJ09B0292-0200
, or
Size
32 Mbytes
32 Mbytes
32 Mbytes
32 Mbytes
32 Mbytes
4 kbytes
4 kbytes
32 Mbytes
32 Mbytes