STV0684 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STV0684

Digital Camera Processor

STMicroelectronics 

Functional Description

STV0684

3.5 Memory interface

Description

The memory control Block provides dedicated support for embedded SRAM, external SDRAM,

NAND, Smartmedia and Compact Flash (via SFP pins).

Embedded SRAM

● Full-speed random read/write access from the ST20 to embedded SRAM

● Full-speed embedded SRAM address generation for real-time data writes from the compression

engine, the Video Processor block, SPI, the audio block and the USB module

● Full-speed embedded SRAM address generation for data reads to the DMA out FIFO

Selection of the source/destination modules is managed by firmware.

External SDRAM

● ST20 memory mapped accesses to external SDRAM

● Full-speed embedded SDRAM address generation for real-time data writes from VDFIF (for VC

and VP modules) or DMA out FIFO

● Full-speed external SDRAM address generation/control to DMA out FIFO, TV FIFO, LCD FIFO

or VP FIFO’s

● Operation with PC100 (or better e.g. PC133) and JEDEC Standard No. 21-C compliant devices

and supports 64MB, 128MB, 256MB and 512MB parts with a 16-bit bus width

Mass storage media support

● Compact-flash support

● SmartMedia Card support

● NAND flash memory with a 512B+16 page organization, ECC done by hardware, 32Mbit to

1Gbit devices

● Support for Multi-Media card and Secure Digital with the SPI interface

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