BSP-15 Equator Technologies, BSP-15 Datasheet - Page 25

• Manufacturer Part Number: BSP-15
• Description: Broadband Signal Processor
• Manufacturer: Equator Technologies

2.5.5 I/O Bus
2.6 Coprocessors
2.6.1 VLx
2.6.2 Video Filter
2.6.3 DES Module
September 6, 2002
The BSP-15 processor support both 3.3V and 5V PCI.
All on-chip peripheral devices are connected via the internal I/O Bus (IOB). This is a 32-bit internal bus
running at one half of the VLIW core frequency. The IOB connects to the DTS through the
DataStreamer DMA controller. The IOB can handle real-time requests.
Coprocessors on the BSP-15 DSP help off-load “serial” processing tasks from the VLIW core or
accelerate special purpose processing for video operations. The coprocessors operate in parallel with the
VLIW core resulting in significantly improved video processing.
The Variable Length Encoder/Decoder or VLx is a 16-bit RISC coprocessor with thirty-two 16-bit
registers. The VLx off-loads the bit sequential tasks of variable length encoding and variable length
decoding (VLE/VLD) from the VLIW core and accelerates applications such as JPEG, H.263, MPEG2
& 4, H.263, JBIG, and DV. The VLx includes special purpose hardware for bitstream processing,
hardware-accelerated MPEG-2 table lookup, and general purpose variable length decoding.
A polyphase (8 phase) 2D Video Filter takes 4:2:0 or 4:2:2 YUV stream as input and scales either up or
down as required. 4 (vertical) × 5 (horizontal) filters support up to 768 horizontal pixels, 3 × 5 up to 1024
horizontal pixels, and 2 × 5 up to 1536 horizontal pixels. The Video Filter pumps out scaled 4:4:4 YUV
data to the DRC through the video bus. The Video Filter can also pump out 4:4:4 YUV data to the
SDRAM for debug purposes. Its features are described below.
The BSP-15 DSP includes hardware support for encryption and decryption of data according to the
National Bureau of Standards Data Encryption Standard and certain implementations thereof as defined
in FIPS Publications 46-2, 46-3, 74, and 81 and ANSI Publication X9.52-1998. For more information
on this support, contact your Equator Technologies sales representative.
• Supports 8-bit coefficients.
• Supports both interspersed and co-sited pixel positioning.
• Supports vertical 4-tap polyphase (8-phase) filters for luminance and chrominance.
• Supports horizontal 5-tap polyphase (8-phase) filters for luminance and chrominance.
• Can scale up to a maximum resolution of 2047×2047 (depends upon memory bandwidth available
• Can scale up from a minimum resolution of 17×4.
• The maximum scale down ratio is 1:7.
for the video scaling operation).
HWR.BSP15.DS.REV.H
BSP-15 Processor Datasheet
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