*request the AHA3410C product specification for complete details. comtech aha corporation comtech aha corporation product brief* AHA3410C starlite 25 mbytes/sec simultaneous lossless data compression / decompr ession coprocessor ic the high speed compression coprocessor is a single-chip cmos vlsi device that implements a lossless compression and de compression algorithm. the algorithm exhibits an average compression ratio over 13 to 1 for bitmap image data. the device sup- ports simultaneous compression and decompression operations at 25 mbytes/sec each. a non-muxed microprocessor interface connects directly to various embedded processors. an additional synchronous 32-bit port transfers data at up to 100 mbytes/sec. scanners and print engine interfaces may optionally be connected to two 8-bit synchronous video ports for emerging multifunction laser printer and copier applications. software simulation and an analysis of the algorithm for printer and copier images of various complexity are available for evaluation. features performance: ? 25 mbytes/sec compression/decompression rates 100 mbytes/sec burst data rate over a 32-bit data bus 25 mbytes/sec synchronous 8-bit video in and video out ports simultaneous compression/decompression operation at full bandwidth average 13 to 1 compre ssion ratio for bitmap image data flexibility: configurable i/o interface for dma mode, big endian or little endian, and 32-bit or 16-bit bus widths interfaces directly with various i960 or motorola 68xxx family of processors optional 8-bit video input and output ports pass-through mode passes raw data through compression and decompression engines programmable scan line le ngth up to 2k bytes system interface: single chip compressi on/decompression solution no external sram required four 16 x 32-bit fifos programmable interrupts output signals may be tristated to facilitate board level testing others: low power modes optional counter checks errors in decompression ambient temperature spec is 70 c, still air software emulation program available 120 pin quad flat package applications multifunction printers and copiers high performance laser printers and digital copiers 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 vdd vss pa 4 vdd procmode1 procmode0 csn vdd vss dir rstn pd7 pd6 pd5 vdd vss pd4 pd3 pd2 pd1 pd0 vdd vss rdyn viackn vid7 vid6 vid5 vdd vss vdd vss d24 d23 d22 d21 d20 d19 d18 d17 d16 d15 vdd vss vdd vss clk vdd vss vss d14 d13 d12 vdd vss d11 d10 d9 d8 d7 pa 3 pa 2 pa 1 pa 0 test voackn vss vdd coeorn vod7 vod6 vod5 vod4 vod3 vss vdd vod2 vod1 vod0 voeorn voreqn d31 vss vdd d30 d29 d28 d27 d26 d25 vid4 vid3 vid2 vid1 vid0 intrn vss vdd driven sd doackn coackn diackn ciackn vss vdd doreqn coreqn direqn cireqn vireqn d0 vss vdd d1 d2 d3 d4 d5 d6 AHA3410C-025 pqc 160 yywwd - country of origin lllll note: yywwd = date code; lllll = lot number
comtech aha corporation figure 1: AHA3410C block diagram functional description the coprocessor device has three external high speed synchronous data ports each capable of transferring once every 25 mhz clock. these are a 32-bit bidirectional data port, an 8-bit video input data (vid) port and a video output data (vod) port. the 32-bit port is capable of transferring up to 100 mbytes/sec. the vid and vod are capable of up to 25 mbytes/sec each. the device accepts uncompressed data through the 32-bit data or optiona lly through the 8-bit vid port into its compression in fifo (ci fifo). the 32-bit data port may be configured for 16-bit transfers. compressed data is available through the 32-bit data port via the compressed output fifo (co fifo). the sustained data rate through the compression engine is 25 mbytes/sec. decompression data may be simultaneously processed by the device. decompression data is accepted through the 32-bit data port, buffered in the decompression input fi fo (di fifo), and decompressed. the output data is made available on the 32-bit data port via th e decompression output fifo (do fifo) or optiona lly on the 8-bit video output port. the decompression engine runs on the 25 mhz clock and is capable of processing an uncompressed byte every cl ock, i.e. 25 mbytes/sec. the four fifos are organized as 16x32 each. for data transfers throug h the three ports, the ?effective? fifo widths differ according to their data bus widths. data transfer for compression or decompres- sion is synchronous over the three data ports functioning as dma masters. to initiate a transfer into or out of the video ports, the device asserts vxreqn, the external device responds with vxackn and begins to transfer data over the vid or vod busses on each succeeding rising edge of the clock until vxreqn is deasserted. the 32-bit port relies on the fifo th reshold settings to deter- mine the transfer. system application the device is intended for memory intensive applications, such as hi gh resolution copiers or printers. these applicatio ns require the simulta- neous compression and decompression capability of the device. copiers use this feature to feed the compressed bit maps thro ugh the decompressor to the printer engine while another process uses the compressor to input and compress scanned images. movement for both processes is typically controlled by a dma controller that is programmed by the local microprocessor or by programmed i/o. (from scanner) vireqn vid[7:0] viackn d[31:0] driven test clk rstn procmode[1:0] pd[7:0] pa[4:0] csn dir rdyn intrn voackn vod[7:0] voreqn voeorn (to printer) coeorn doreqn coreqn direqn cireqn sd doackn coackn diackn ciackn vid port data port ci fifo 16x32 di fifo 16x32 clock data port control compressor decompressor microprocessor interface co fifo 16x32 do fifo 16x32 vod port AHA3410C starlite 8 8 8 8 8 8 32 32 32 5 8
comtech aha corporation starlite image compression results - 1200 x 1200 dpi uncompressed file size = 16 mbytes; image dimensions = 10200 13200 pels fonts - simple text output file size = 783,848 compression ratio = 21.5 math - simple text and lineart output file size = 79,245 compression ratio = 212.4 mp - text and simple graphics output file size = 86,525 compression ratio = 194.5 bench2 - text and gra phics with pictorials output file size = 424,995 compression ratio = 39.6 balls - complex graphics with pictorials output file size = 3,665,167 compression ratio = 4.6
comtech aha corporation pb3410c_0600 ? 2005 comtech aha corp. comtech aha corporation 1126 alturas drive fax: 208.892.5601 tel: 208.892.5600 e-mail: sales@aha.com www.aha.com moscow id 83843-8331 a subsidiary of comtech te lecommunications corporation compressor/decompressor for mid- range multifunction copier/printer applications - an example about aha comtech aha corporation (aha) develops and markets superior integrated circuits, boards, and intellectual property core technology for communications systems architects worldwide. aha has been setting the st andard in forward error correction and lossless data compression technology for many years and provides flexible, cost-effective solutions for today?s growing bandwidth and reliability challenges. comtech aha corporation is a who lly owned subsidiary of comtech telecommuncations corp. (nasdaq: cmtl). for more informa tion, visit www.aha.com. ordering information frame buffer memory AHA3410C starlite ackn[3:0] pa[4:0] csn dir rdyn intrn reqn[3:0] data port vid port vod port viackn vireqn voreqn voackn voeorn cpu interface vid scanner port vod printer port 32 bit 8-bits 8-bits (25 mbytes/sec) (25 mbytes/s e 22 part number description AHA3410C-025 pqc 160 25 mbytes/sec simultaneous lossless data compression/ decompression coprocessor ic
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