CC2430 Datasheet, PDF (41/212 Pages) Texas Instruments – A True System-on-Chip solution for 2.4 GHz IEEE 802.15.4 / ZigBee-TM

CC2430
8051 CPU : Memory
MEMCTR (0xC7) – Memory Arbiter Control
Bit Name
7_-
6 _MUNIF
5:4 _FMAP[1:0]
3:2 _-
1 _CACHDIS
0_-
Reset R/W
0
R0
0
R/W
01
R/W
00
R0
0
R/W
1
R/W
Description
Not used
Unified memory mapping. When unified mapping is enabled, all
physical memories are mapped into the CODE memory space as
far as possible, when uniform mapping is disabled only flash
memory is mapped to CODE space
0 Disable unified mapping
1 Enable unified mapping
Flash bank map. These bits are supported by CC2430-F128 only.
Controls which of the four 32 KB flash memory banks to map to
program address 0x8000 – 0xFFFF in CODE memory space.
These bits are aliased to FMAP.MAP[1:0]
00 Map program address 0x8000 – 0xFFFF to physical memory
address 0x00000 – 0x07FFF
01 Map program address 0x8000 – 0xFFFF to physical memory
address 0x08000– 0x0FFFF
10 Map program address 0x8000 – 0xFFFF to physical memory
address 0x10000 – 0x17FFF
11 Map program address 0x8000 – 0xFFFF to physical memory
address 0x18000 – 0x1FFFF
Not used
Flash cache disable. Invalidates contents of instruction cache and
forces all instruction read accesses to read straight from flash
memory. Disabling will increase power consumption and is
provided for debug purposes.
0 Cache enabled
1 Cache disabled
Reserved. Always set to 1.⁶
FMAP (0x9F) – Flash Bank Map
Bit Name
7:2 _-
1:0 _MAP[1:0]
Reset R/W
0x00 R0
01
R/W
Description
Not used
Flash bank map. Controls which of the four 32 KB flash memory
banks to map to program address 0x8000 – 0xFFFF in CODE
memory space. These bits are aliased to
MEMCTR.FMAP[5:4]
00 Map program address 0x8000 – 0xFFFF to physical memory
address 0x00000 – 0x07FFF
01 Map program address 0x8000 – 0xFFFF to physical memory
address 0x08000– 0x0FFFF
10 Map program address 0x8000 – 0xFFFF to physical memory
address 0x10000 – 0x17FFF
11 Map program address 0x8000 – 0xFFFF to physical memory
address 0x18000 – 0x1FFFF
6 _{Reserved bits must always be set to the specified value. Failure to follow this will result in}
indeterminate behaviour.
CC2430 Data Sheet (rev. 2.1) SWRS036F
Page 41 of 211