STV-974/552S-R01 STMicroelectronics, STV-974/552S-R01 Datasheet - Page 20

• Manufacturer Part Number: STV-974/552S-R01
• Description: KIT DEMO W/VS6552
• Manufacturer: STMicroelectronics

Specifications of STV-974/552S-R01

• Sensor Type: CMOS Imaging, Color (RGB)
• Sensing Range: VGA
• Interface: I²C
• Sensitivity: 30 fps
• Embedded: No
• Utilized Ic / Part: STV0974E, VS6552
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-3891

STV0974
4.5
4.5.1
4.5.2
Microprocessor interface
Features
Description
The STV0974 can be connected to any general purpose 8-bit microprocessor via the
microprocessor interface. This interface substitutes functionally to the YUV and I²C interfaces, i.e.
both data and control flows are handled through the interface which provides:
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8-bit microprocessor interface, asynchronous read/write, one address bit
Indirect access to image sensor and coprocessor control registers
Direct access to image data (JPEG compressed or uncompressed)
On-chip 2048 byte image FIFO
Interrupt request output
8/16/32-byte burst DMA support
2 Kbyte video FIFO for JPEG data and 10 Kbyte FIFO for non-JPEG data
access to the image data FIFO for fast transfers of scaled-down viewfinder images or full-
resolution captured and compressed image data. For host systems with DMA support, a DMA
request line is provided, as well as programmable FIFO threshold for burst operation. For other
systems, an interrupt request output line is provided.The 2048-byte FIFO allows for greater
host system latencies; to suit system requirements, the FIFO threshold is programmable.
access to the camera subsystem configuration and control registers, through an address/data
register pair and a status register for data polling. Access requests are posted to the internal
controller core that handles the request (as in I²C mode) and finally acknowledges through the
microprocessor interface status register.
Functional description
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