STMicroelectronics ML8205

OVERVIEW

The ML86410 is an LSI that encodes YUV (YCbCr) format digital video signals into MPEG-4-ASP format ones in real time.
The LSI achieves high picture quality by a unique high-speed high-quality motion search method and a unique coding rate control method. For video input, the LSI supports progressive video output from camera modules and interlaced video output from NTSC/PAL digital video decoders.

FEATURES

Image encoding:
− Encoding format
· MPEG-4 Simple Profile@Level 3
· MPEG-4 Advanced Simple Profile@Level 5
− Supported image
· Progressive QVGA, 30 fps
· Progressive VGA, 30 fps
· Interlaced NTSC, 29.97 fps
· Interlaced PAL, 25 fps
− Output frame (with a frame skipping function)
· QVGA/ VGA : 30/15/1/0.5 fps
· NTSC : 29.97/14.985/0.999/0.4995 fps
· PAL : 25/12.5/1/0.5 fps
− Coding type
· IIII
· IPPP···
− Encoding mode
· CBR (Up to 6 Mbps)
· VBR
− Supports interlaced images (NTSC/PAL)
− Unique high-speed high-quality motion search method
− Unique coding rate control method
− 4MV motion estimation
− Detectes abnormality such as:
· Camera input abnormality
· Stream data readout abnormality
· Set bit rate exceeded
− Can suspend/restart encoding

Video interface:

− QVGA (320 × 240 pixels) / VGA (640 × 480 pixels) :
YCbCr (8-bit (YCbCr) (4:2:2) ) + sync, 27 MHz
YUV (8-bit (YUV)(4:2:2)) + sync, 27 MHz
− NTSC (720 × 480 pixels) ) / PAL (720 × 576 pixels) : ITU-R BT.656, 27 MHz
Note:
Although signals are input in 4:2:2 format, they are converted to
4:2:0 format before encoding processing.
− Can choose the order in which fields are loaded during interlacing (Top first/Bottom first)
− Can choose between the positive polarity and the negative polarity of CLKCAM when loading YUVDATA,
VSYNC, or HSYNC
− Clipping can be specified as no clipping or clipping in the range of 16≤Y,U,V≤240
− For the interface, a 3.3 V I/O interface is used.

Host CPU interface:

− General-purpose 8-/16-bit data bus (can be connected directly
with Oki’s ARM microcontroller series)
− Operable as an I/O device in DMA mode from the host CPU

External SDRAM interface:

− 32-bit data bus, 2 MWords × 32 bits, 81 MHz (equivalent to PC133)
− Automatic initialization sequence
− Column address: 8/9/10 bits selectable

Input clock:

− System clock : 27 MHz
− Video interface : 27 MHz

Power management:

− No power management function is provided

Power supply voltage:

− Core section : 1.35 to 1.65 V
− I/O section : 3.0 to 3.6 V
− PLL section : 1.35 to 1.65 V

Operating frequency:

− Internal : 81 MHz
− Video interface section : 27 MHz

Operating temperature (ambient temperature):

− -20 to +85°C

Package:

− 144-pin plastic LQFP (LQFP144-P-2020-0.50-ZK)