The SM34020APCM40 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 (I-cache), the ability to simultaneously access memory and registers, and an instruction set designed to expedite raster graphics operations, the SM34020APCM40 provides user-programmable control of the CRT interface, as well as the memory interface [both standard DRAM and multiport video RAM (VRAM)]. 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
● Commercial Operating Temperature Range 0°C to 70°C
● SM34020APCM40 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 (GSP)
● Object-Code Compatible With the SM34010
● 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 (I-Cache)
● Optimized DRAM/Video RAM (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 SM34020APCM40 Address Space
● Implicit Addressing
● Prefetch for Enhanced Read Access
● Programmable CRT Control
● Composite Synchronization Mode
● Separate Synchronization Mode
● Synchronization to External Synchronization
● Direct Support for Special Features of 1M VRAMs
● Load Write Mask
● Load Color Mask
● Block Write
● Write Using the Write Mask
● Flexible Multiprocessor Interface
● 144-Pin PCM Quad Flat Package (QFP)
