80960HA/HD/HT
1.0
About This Document
This document describes the parametric performance of Intel’s 80960Hx embedded superscalar
microprocessors. Detailed descriptions for functional topics — other than parametric performance
— are published in the
i960
®
Hx Microprocessor User’s Guide
(272484).
In this document, “80960Hx” and “i960 Hx processor” refer to the products described in
Throughout this document, information that is specific to each is clearly indicated.
Figure 1. 80960Hx Block Diagram
Instruction Prefetch Queue
JTAG Port
Timers
Interrupt
Port
Programmable
Interrupt Controller
Multiply/Divide Unit
Register-Side
Execution Unit
Machine Bus
Memory-Side
Machine Bus
Instruction Cache
16 Kbyte, Four-Way Set-Associative
Guarded Memory Unit
Control
Memory Region Configuration
Address
Bus Controller
Bus Request Queues
Data Cache
8 Kbyte, Four-Way Set-Associative
128-Bit Cache Bus
Parallel Instruction Scheduler
Data
Data RAM - 2 Kbyte
Register Cache - 5 to 15 sets
Address Generation Unit
Six-Port Register File
64-bit SRC1 Bus
32-bit Base Bus
64-bit SRC2 Bus 128-bit Load Bus
64-bit DST Bus
128-bit Store Bus
2.0
Intel’s 80960Hx Processor
Intel’s 80960Hx processor provides new performance levels while maintaining backward
compatibility (pin
1
and software) with the i960 CA/CF processor. This newest member of the family
of i960 32-bit, RISC-style, embedded processors allows customers to create scalable designs that
meet multiple price and performance points. This is accomplished by providing processors that can
run at the bus speed or faster using Intel’s clock multiplying technology (Table
1).The
80960Hx core
is capable of issuing 150 million instructions per second, using a sophisticated instruction scheduler
that allows the processor to sustain a throughput of two instructions every core clock, with a peak
performance of three instructions per clock. The 80960Hx-series comprises three processors, which
differ in the ratio of core clock speed to external bus speed.
Table 1.
80960Hx Product Description
Product
80960HA
80960HD
80960HT
*Processor inputs are 5 V tolerant.
Core
1x
2x
3x
Voltage
3.3 V
*
3.3 V
*
3.3 V
*
Operating Frequency (bus/core)
25/25, 33/33, 40/40
16/32, 25/50, 33/66, 40/80
20/60, 25/75
1.
The 80960Hx is not “drop-in” compatible in an 80960Cx-based system. Customers can design systems that accept either 80960Hx or Cx
processors.
Advance Information
Datasheet
1
INTEL [ INTEL CORPORATION ]
