Main Memory - Sony CXD5602 User Manual

Table Memory Mapping-3 Memory Mapping of the APP Block (APP Window)
Category
Reserved
SRAM
Reserved
APP Local
Reserved
DM A
Reserved
Imaging/2D
Reserved
Storage/Connectivity
Reserved
Audio Codec
Reserved
2.6.2

Main Memory

There is 1.5 MByte SRAM in total which is connected to AHB of the Application Processor.
The SRAM is made up of 128 KByte Logic Tiles. Each of them has the AHB I/F individually.
In addition, the Logic Tile is the unit for the SRAM access protection function.
You can use protection feature that keeps masters with specific Master ID from accessing specific SRAM Logic
Tiles. The protection feature can be controlled via buses.
Power domain of Main Memory is PWD_APP. When PWD_APP is turned off, this memory cannot be used.
Power on/off can be controlled suitably by power switch inside SRAM for each 128 KByte Logic Tile. There are
two operation modes for SRAM power-off; they can be set by system control registers.

Retention mode

A mode in which only the power supply of SRAM memory array is ON, and the power supply of the
peripheral circuitry is turned OFF. In Retention mode, the SRAM cannot be accessed, but the data
within the SRAM is retained. By turning on (ON mode) the power supply of peripheral circuitry of the
SRAM once again, the data within the SRAM can be accessed. Retention mode enables reduction of the
leakage power and recovery of high speed of peripheral circuitry for SRAMs that are temporarily not
used.

Shutdown mode

A mode that turns OFF both the power supply of the SRAM memory array and peripheral circuitry.
This mode consumes less power than the Retention mode, but the data in the SRAM is not retained.
Pheripheral Name
Reserved
SRAM (1.5M B)
Reserved
CRG and Application Processor
Reserved
ADM AC
Reserved
CIS I/F
2D Graphics
IDM AC
UART2
SPI4
SPI5
Reserved
USB
eM M C
SDIO
Reserved
AUDIO DSP, I2S, PDM
Reserved
－42/1010－
Start Address End Address
0x0C000000 0x0CFFFFFF
0x0D000000 0x0D17FFFF
0x0D180000 0x0DFFFFFF
0x0E000000 0x0E013FFF
0x0E014000 0x0E01FFFF
0x0E020000 0x0E020FFF
0x0E021000 0x0E0FFFFF
0x0E100000 0x0E100FFF
0x0E101000 0x0E101FFF
0x0E102000 0x0E102FFF
0x0E103000 0x0E1033FF
0x0E103400 0x0E103BFF
0x0E103C00 0x0E104FFF
0x0E105000 0x0E1FFFFF
0x0E200000 0x0E200FFF
0x0E201000 0x0E201FFF
0x0E202000 0x0E202FFF
0x0E203000 0x0E2FFFFF
0x0E300000 0x0E304FFF
0x0E305000 0x0FFFFFFF
CXD5602 User Manual
Size
(4k bytes unit）
16M
1.5M
14M
80M
48K
4K
892K
4K
4K
4K
1K
1K
5K
1004K
4K
4K
4K
1012K
20K
28M