MB86293 ‘Coral Q’

The ‘Coral’device family offers an increased internaloperating frequency of166MHz,a 64-bit memory bus, support for six independent layers,advanced alpha-blending features and enhanced video input facilities.The higher internal frequency of166MHz (400MHz for display dot industrial clocks) enables the rendering engine ofthe devices to achieve a factor 10 improvement in texture mapping and drawing image quality compared to the previous graphics controller devices.The enhanced bandwidth allows a much greater rate ofaccessfor graphics elements,and delivers improved scanning functions at higher display resolutions.The ‘Coral Q’and ‘Coral B’devices are compatible with host CPU buses including Fujitsu FR,Hitachi SH3 and SH4 and NEC V83 without external glue logic.All devices are binary compatible with previous generation graphics controllers,like the ‘Cremson’,‘Orchid’and ‘Scarlet’devices.This helps to speed-up developments and save costs because existing software modules (e.g.map renderer) and drivers can be used without any modifications.An enhancement to 2D-drawing functions is the integration ofa line depth display facility,which clearly defines the correct respective level ofintersecting map lines.Enhanced hardware design also provides improvements in pattern line performance.The ‘Coral’devices address up to 64MB ofexternal SDRAMor FCRAM
D[31:0]A[25:2]MD[63:0]MA[14:0] MB86293 has a 6-layer structure and a geometry processor that perform co-ordinate conversions at 166MHz. Key features •CMOS 0.18µm technology •Display resolutions up to 1280 x 768 •6 layers ofoverlay display (Windows) •Alpha Plane•Geometry processor •RGB digital output (8-bit x 3) •Includes various kinds of2D/3D graphic accelerationfunctions •Built-in alpha blending,anti-aliasing and chroma-keying •External SDRAM or FCRAM
MB86293 family layer structure. TM memory @ 133MHz and are capable ofadjusting picture sizes to optimise the available memory space. All layers can have a colour depth of8-,16- or 24-bits/pixel and can be changed in position,size and priority.The maximum logical layer size has been increased to 4096 x 4096 pixels.
TM interface @ 133MHz forup to 64MB graphic memory •Configurable CPU-interface for embedded CPUs/MCUs •Supply voltage 3.3V (I/O),1.8V (Internal) •QFP-256 package •Temperature range -40 to +85°C
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