参数资料
型号: CS7808
厂商: Cirrus Logic, Inc.
英文描述: MULTI PURPOSE AUDIO/VIDEO EMBEDDED PROCESSOR
中文描述: 多用途音频/视频嵌入式处理器
文件页数: 23/52页
文件大小: 985K
代理商: CS7808
23
CS7808
4. MEMORY MAP
4.1
Processor Memory Map
The CS7808 externally supports up to 32 Mbytes
DRAM and 16 Mbytes ROM/NVRAM.
Table 10
,
Table 11
and
Table 12
on the next page list the
memory map as viewed by the RISC processors,
and identifies whether each segment is mapped or
cacheable.
For detailed information on programming CS7808
memory, see
CS7808 Memory Interface User’s
Manual
(DS525UMD1).
4.2
Table 11 on page 23
lists the memory map as
viewed by host slave port.
Host Port Memory Map
4.3
Table 10, Table 11, and Table 12
show how the In-
ternal I/O space is mapped between general regis-
ters,
internal
SRAM
processors’ debug port.
Internal I/O Space Map
ports,
and
the
RISC
Processor Byte Address
0000_0000
07FF_FFFF
8000_0000 - 81FF_FFFF
9400_0000
9CFF_FFFF
9C00_0000
9CFF_FFFF
9D00_0000
9DFF_FFFF
A000_0000
A1FF_FFFF
B000_0000
B003_FFFF
B400_0000
BCFF_FFFF
BC00_0000
BCFF_FFFF
BD00_0000
BDFF_FFFF
C000_0000
FFFF_FFFF
Description
Cacheable
Y
Y
N
Y
Y
N
N
N
N
N
Y
DRAM (mapped)
DRAM (32 Mbytes)
16-bit NVRAM write (16 Mbytes)
16-bit NVRAM/ROM (16 Mbytes)
8-bit NVRAM/ROM (16 Mbytes)
DRAM (32 Mbytes)
Internal I/O (256 Kbytes)
16-bit NVRAM write (16 Mbytes)
16-bit NVRAM/ROM (16 Mbytes)
8-bit NVRAM/ROM (16 Mbytes)
DRAM (mapped)
Table 10. Memory Map-RISC0 Processor
Host Byte Address
Description
0000 0000
003F FFFF
1000 0000
13FF FFFF
1400 0000
17FF FFFF
Internal I/O Space
DRAM space (16 Mbytes)
NVRAM space (16 Mbytes)
Table 11. Host Port Memory Map
Byte Address Offset
Description
0_0000
0_2FFF
0_3000
1_FFFF
2_0000
2_FFFF
3_0000
3_FFFF
General registers
General Internal SRAM
RISC_0 Internal SRAM/Registers
RISC_1 Internal SRAM/Registers
Table 12. Internal I/O Space Map
相关PDF资料
PDF描述
CS7808-CM MULTI PURPOSE AUDIO/VIDEO EMBEDDED PROCESSOR
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