The SMJ34020A graphics system processor (GSP) 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 SMJ34020A 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.
● Class B High-Reliability Processing
● 1-µm CMOS Technology
● Military Operating Temperature Range
● 55°C to 125°C
● SMJ34020A-32/40
● 125/100-ns Instruction Cycle Time
● Fully Programmable 32-Bit General-Purpose Processor With 512-Megabyte Linear Address Range (Bit Addressable)
● Second-Generation Graphics System Processor
● Object-Code Compatible With the SMJ34010
● Enhanced Instruction Set
● Optimized Graphics Instructions
● Coprocessor Interface
● Pixel Processing, XY Addressing, and Window Checking Built Into the Instruction Set
● Programmable 1-, 2-, 4-, 8-, 16-, or 32-Bit Pixel Size With 16 Boolean and Six Arithmetic Pixel Processing Options (Raster Ops)
● 512-Byte LRU On-Chip Instruction Cache
● Optimized DRAM/VRAM Interface
● Page-Mode for Burst Memory Operations
● Dynamic Bus Sizing (16-Bit and 32-Bit Transfers)
● Byte-Oriented CAS\ Strobes
● Flexible Host Processor Interface
● Supports Host Transfers
● Direct Access to All of the SMJ34020A Address Space
● Implicit Addressing
● Prefetch for Enhanced Read Access
● Programmable CRT Control
● Composite Sync Mode
● Separate Sync Mode
● Synchronization to External Sync
● Direct Support for Special Features of 1M VRAMs
● Load Write Mask
● Load Color Mask
● Block Write
● Write Using the Write Mask
● Flexible Multi-Processor Interface
● Packaging Options
● 145-Pin Grid Array Ceramic Package (GB Suffix)
● 132-Pin Ceramic Quad Flat Pack (Unformed Lead) (HT Suffix)
