Ultrasparc Ii Processor; C.1.5 Ultrasparc Ii Processor - Sun Microsystems Ultra 60 Service Manual

C.1.4.5 Audio
Audio has been moved on to a plug-in module using a Crystal Semiconductor
CS4231 codec chip.
C.1.5

UltraSPARC II Processor

The UltraSPARC II processor is a high-performance, highly-integrated superscalar
processor implementing the SPARC-V9 64-bit RISC architecture. The UltraSPARC II
processor is capable of sustaining the execution of up to four instructions per cycle
even in the presence of conditional branches and cache misses. This sustained
performance is supported by a decoupled prefetch and dispatch unit with instruction
buffer. The UltraSPARC II processor supports both 2D and 3D graphics, as well as
image processing, video compression and decompression, and video effects through
the sophisticated visual instruction set (VIS). VIS provides high levels of multimedia
performance, including real-time video compression/decompression and two streams
of MPEG-2 decompression at full broadcast quality with no additional hardware
support. The UltraSPARC II processor provides a 2-Mbyte ecache, with an 300-MHz
operating frequency.
UltraSPARC II processor characteristics and associated features include:
SPARC-V9 architecture compliant
Binary compatible with all SPARC application code
Multimedia capable visual instruction set (VIS)
Snooping cache coherency
Four-way superscalar design with nine execution units; four integer
execution units
Three floating-point execution units
Two graphics execution units
Selectable little- or big-endian byte ordering
64-bit address pointers
16-Kbyte non-blocking data cache
16-Kbyte instruction cache; single cycle branch following
Power management
Software prefetch instruction support
Multiple outstanding requests
C-8 Sun Ultra 60 Service Manual • August 2001
Multiprocessing support
Glueless four-processor connection with minimum latency