STV0974E/TR STMicroelectronics, STV0974E/TR Datasheet - Page 13

• Manufacturer Part Number: STV0974E/TR
• Description: IC DSP IMAGING VGA CMOS 6X6TFBGA
• Manufacturer: STMicroelectronics

Specifications of STV0974E/TR

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 56-TFBGA
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• For Use With: 497-3891 - KIT DEMO W/VS6552
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-3887-2; STV0974E/TR

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Functional description
Video compression (VC)
Real time video compression permits a frame rate of 30 frame/s in any mode at VGA.
The JPEG compression engine is a standard baseline sequential JPEG encoder
The compression ratio can be modified by applying a multiplication factor on the quantization table.
The quantization table can be scaled from a factor of 1/8 to a factor of 8.
The STV0974 video compression block includes a baseline DCT JPEG encoder compliant with
ISO DIS 10918-1.
The JPEG encoder has the following characteristics:
The encoder top level block diagram is presented in
Figure 3: Encoder top level block diagram
The input data is a YUV 422 8-bit data stream in raster order. The output data is a baseline JPEG
data stream.
●
●
●
●
●
●
baseline sequential DCT based encoder
YUV 422 encoding only
up to VGA image size
scalable quantization table
standard quantization table
standard Huffman coder
converter
to block
Raster
transform
Discrete
Cosine
transform
ZigZag
Figure 3
.
Quantize
[2]
Entropy
coder
.
STV0974