Intel 80960HD, 80960HT Hx Product Description, Product Core Voltage Operating Frequency bus/core

80960HA/HD/HT

1.0About 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 Table 1. Throughout this document, information that is specific to each is clearly indicated.

Figure 1. 80960Hx Block Diagram

		Instruction Prefetch Queue		Guarded Memory Unit	Control
	JTAG Port	Instruction Cache		Memory Region Configuration
		16 Kbyte, Four-Way Set-Associative			Address
				Bus Controller
	Timers
		128-Bit Cache Bus
				Bus Request Queues	Data
Interrupt	Programmable
		Parallel Instruction Scheduler
Port	Interrupt Controller			Data Cache
				8 Kbyte, Four-Way Set-Associative
	Multiply/Divide Unit			Data RAM - 2 Kbyte
		Register-Side	Memory-Side
	Execution Unit
		Machine Bus	Machine Bus	Register Cache - 5 to 15 sets
		Six-Port Register File		Address Generation Unit
		64-bit SRC1 Bus	32-bit Base Bus
		64-bit SRC2 Bus	128-bit Load Bus
		64-bit DST Bus	128-bit Store Bus

2.0Intel 80960Hx Processor

The Intel 80960Hx processor provides new performance levels while maintaining backward compatibility (pin1 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 may run at the bus speed or faster using Intel’s clock multiplying technology (see 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	Core	Voltage	Operating Frequency (bus/core)
80960HA	1x	3.3 V†	25/25, 33/33, 40/40
80960HD	2x	3.3 V†	25/50, 33/66, 40/80
80960HT	3x	3.3 V†	25/75

†Processor inputs are 5 V tolerant.

1.The 80960Hx is not “ drop-in” compatible in an 80960Cx-based system. Customers may design systems that accept either 80960Hx or Cx processors.

Datasheet 9