TMS34020APCM

Product Summary

The TMS34020APCM graphics processor is the second generation of an advanced high-performance CMOS 32-bit microprocessor optimized for graphics display systems. With a built-in instruction cache, the ability to simultaneously access memory and registers, and an instruction set designed to expedite raster graphics operations, the TMS34020APCM provides user-programmable control of the CRT interface as well as the memory interface (both standard DRAM and multiport video RAM). The 4-gigabit (512-megabyte)physical address space is addressable on bit boundaries using variable-width data fields (1 to 32 bits). Additional graphics addressing modes support 1-, 2-, 4-, 8-, 16- and 32-bit wide pixels.

Parametrics

TMS34020APCM absolute maximum ratings: (1)Maximum supply voltage, VCC: 7 V; (2)Input voltage range: – 0.3 V to 7 V; (3)Off-state output voltage range: – 2 V to 7 V; (4)Operating free-air temperature range: 0℃ to 70℃; (5)Storage temperature range: – 10℃ to 150℃.

Features

TMS34020APCM features: (1)Instruction Cycle Time: 100 ns, TMS34020A-40; 125 ns, TMS34020-32; 125 ns, TMS34020A-32; (2)Fully Programmable 32-Bit General-Purpose Processor With 512-Megabyte Linear Address Range (Bit Addressable); (3)Second-Generation Graphics Processor: Object Code Compatible With the TMS34010; Enhanced Instruction Set; Optimized Graphics Instructions; TMS34082 Graphics Floating-Point Interface; (4)Pixel Processing, XY Addressing, and Window Checking Built into the Instruction Set; (5)Programmable 1-, 2-, 4-, 8-, 16-, or 32-Bit Pixel Size With 16 Boolean and 6 Arithmetic Pixel-Processing Options (Raster-Ops); (6)512-Byte LRU On-Chip Instruction Cache; (7)Optimized DRAM/VRAM Interface; (8)Page-Mode for Burst Memory Operations up to 40 Megabytes per Second; (9)Dynamic Bus Sizing (16-Bit and 32-Bit Transfers); (10)Byte-Oriented CAS Strobes; (11)Flexible Multiprocessor Interface; (12)Programmable CRT Control; (13)Composite Sync Mode; (14)Separate Sync Mode; (15)Synchronization to External Sync; (16)Direct Support for Special Features of 1M VRAMs; (17)Load Write Mask; (18)Load Color Mask; (19)Block Write; (20)Write Using the Write Mask.

Diagrams