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| comtech aha corporation PRODUCT BRIEF* AHA3422 StarLite 16 MBYTES/SEC LOSSLESS DECOMPRESSOR IC AHA3422 is a high speed lossless decompression coprocessor IC for the hardcopy systems on many standard platforms, including the PCI Bus. The device offers a low cost decompression only solution for under 30 ppm printers or 50 ppm copiers at 1200 dpi. High speed decompression, flexible interfaces and advanced banding support make this a unique solution for Raster Image Processing (RIP) controller designs. Advanced banding support handles blank, uncompressed and compressed bands. Scan line and record length counters accommodate various print resolutions and band buffer sizes. Software simulation and an analysis of the algorithm for printer and copier images of various complexity are available for evaluation. PA[3] PA[2] PA[1] PA[0] TEST0 VOACKN VSS VDD NC VOD[7] VOD[6] VOD[5] VOD[4] VOD[3] VSS VDD VOD[2] VOD[1] VOD[0] VOEORN VOREQN D[31] VSS VSS VDD VDD D[30] D[29] D[28] D[27] D[26] D[25] FEATURES PERFORMANCE: * 16 MBytes/sec data rate * 132 MBytes/sec burst data rate over a 32-bit data bus * 33 MBytes/sec burst rate, 16 MBytes/sec sustained synchronous 8-bit video out port * Average 15 to 1 compression ratio for 1200 dpi bitmap image data * Advanced banding support FLEXIBILITY: VDD PA[5] VSS PA[4] NC VOEOTN PROCMODE[1] PROCMODE[0] CSN VDD VSS DIR RSTN PD[7] PD[6] PD[5] VDD VSS PD[4] PD[3] PD[2] PD[1] PD[0] VDD VSS RDYN VDD *I *I *I VDD VSS 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 AHA3422A-033 PQC YYWWD - COUNTRY OF ORIGIN LLLLL 64 63 62 61 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 VDD VSS D[24] D[23] D[22] D[21] D[20] D[19] D[18] D[17] D[16] D[15] VDD VSS VDD VDD VSS CLOCK VDD VSS VSS TEST1 D[14] D[13] D[12] VDD VSS D[11] D[10] D[9] D[8] D[7] * Big Endian or Little Endian; 32 or 16-bit bus width and data bit/byte reordering for duplex printing support * Programmable Record Length, Record Count and Scan Length Registers may be prearmed * Scan line length up to 2K bytes * Interfaces directly with various Motorola 68xxx and Cold FIRE and Intel i960 processors * Pass-through mode passes raw data through the decompression engine SYSTEM INTERFACE: 96 95 94 93 92 91 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 * Single chip decompression solution-no external SRAM required * Four internal 16 x 32-bit FIFOs * Maskable interrupts * Tristatable outputs to facilitate board level testing OTHERS: * * * * Low power modes Optional counter checks errors in decompression Software emulation program available 128 pin quad flat package 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 31 32 *I *I *I *I *I INTRN VSS VDD DRIVEN SD DOACKN VDD DIACKN VDD VSS VDD DOREQN NC DIREQN NC NC D[0] VSS VSS VDD VDD D[1] D[2] D[3] D[4] D[5] D[6] APPLICATIONS * Digital copiers * Printer controllers * Multifunction printers and copiers NOTES: NC = No Connect; *I = Connect to VDD or VSS YYWWD = DATE CODE; LLLLL = LOT NUMBER *Request the AHA3422 Product Specification for complete details. comtech aha corporation comtech aha corporation Figure 1: AHA3422 Block Diagram DOREQN DOACKN DIREQN DIACKN DATA PORT CONTROL 32 D[31:0] DRIVEN DATA PORT 32 SD 32 (To Printer) VOEOTN VOEORN VOREQN VOD[7:0] VOACKN DI FIFO 16x32 8 DECOMPRESSOR 8 DO FIFO 16x32 8 VOD PORT CLOCK PROCMODE[1:0] MICROPROCESSOR INTERFACE 8 PD[7:0] 5 AHA3422 StarLite PA[5:0] FUNCTIONAL DESCRIPTION The coprocessor device has two external high speed synchronous data ports each capable of transferring once every 33 MHz clock. These are a 32-bit bidirectional data port and an 8-bit Video Output Data (VOD) port. The data port is capable of transferring up to 132 MBytes/sec. The VOD is capable of up to 33 MBytes/sec. Decompression data is accepted through the data port, buffered in the Decompression Input FIFO (DI FIFO), and decompressed. The output data is made available on the data port via the Decompression Output FIFO (DO FIFO) or optionally on the 8-bit Video Output port. The decompression engine runs on the 33 MHz clock and is capable of processing an uncompressed byte every other clock, i.e. 16 MBytes/sec. The two FIFOs are organized as 16x32 each. For data transfers through the two ports, the "effective" FIFO widths differ according to their data bus widths. Data transfer is synchronous over the data ports functioning as DMA masters. To initiate a transfer into or out of the Video port, the device asserts VOREQN, the external device responds with VOACKN and begins to transfer data over the VOD bus on each succeeding rising edge of the clock until VOREQN is deasserted. The data port relies on the FIFO Threshold settings to determine the transfer. SYSTEM APPLICATION The device is intended for memory intensive applications requiring a hardware decompression device, such as high resolution copiers or printers. The part is typically used in systems where StarLite compression is performed either in software or in another StarLite compression device. It may also be used in systems requiring multiple decompressors. INTRN RDYN RSTN TEST CSN CLK DIR comtech aha corporation StarLite IMAGE COMPRESSION RESULTS - 1200 x 1200 DPI Uncompressed file size = 16 MBytes; Image dimensions = 10200 x 13200 pels FONTS - Simple Text MP - Text and Simple Graphics Output File Size = 783,848 Compression Ratio = 21.5 Output File Size = 86,525 Compression Ratio = 194.5 MATH - Simple Text and Lineart BENCH2 - Text and Graphics with Pictorials Output File Size = 424,995 Compression Ratio = 39.6 BALLS - Complex Graphics with Pictorials Output File Size = 79,245 Compression Ratio = 212.4 Output File Size = 3,665,167 Compression Ratio = 4.6 comtech aha corporation DECOMPRESSOR FOR MID-RANGE MULTIFUNCTION COPIER/PRINTER APPLICATIONS - AN EXAMPLE FRAME BUFFER MEMORY DIACKN 32 bit DIREQN 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 standard 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 wholly owned subsidiary of Comtech Telecommuncations Corp. (NASDAQ: CMTL). For more information, visit www.aha.com. CPU INTERFACE PA[4:0] CSN DIR RDYN INTRN VOD PORT DATA PORT AHA3422 StarLite ORDERING INFORMATION PART NUMBER DESCRIPTION Lossless AHA3422A-033 PQC 16 MBytes/sec IC Decompressor 8-bits VOD PRINTER PORT VOEOTN VOREQN VOACKN VOEORN comtech aha corporation A subsidiary of Comtech Telecommunications Corporation 1126 Alturas Drive Moscow ID 83843-8331 tel: 208.892.5600 fax: 208.892.5601 e-mail: sales@aha.com www.aha.com PB3422_0600 (c) 2005 Comtech AHA Corp. |
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