80960HA/HD/HT

Figure 40. Burst, Non-Pipelined Read Request with Wait States, 8-Bit Bus

PMCON

 

External

 

Pipe-

Bus

 

Odd

Parity

 

 

 

 

 

 

 

Function

 

 

 

 

 

 

 

NRAD

 

 

Ready

Burst

 

NXDA

NWDD

 

NWAD

NRDD

 

 

Lining

Width

 

Parity

Enable

 

 

 

 

Control

 

 

 

 

 

 

 

 

 

 

 

 

 

Bit

 

29

28

24

23-22

 

21

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19-16

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12-8

7-6

4-0

 

Value

Disabled

Enabled

OFF

8-Bit

 

X

Enabled

1

X

 

X

1

2

 

 

0

1

0

00

 

x

1

0001

xx

 

xxxxx

01

00010

 

NOTE: Bits 31-30, 27-25, 13, and 5 are reserved.

 

 

 

 

 

 

 

 

 

 

A

2

1

D

1

D

1

D

1

D

1

A

 

CLKIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ADS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUP, CT3:0,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D/C, LOCK,

 

 

 

 

 

 

 

Valid

 

 

 

 

 

 

 

A31:4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

W/R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLAST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DT/R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DEN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A3:2

 

 

 

 

 

 

A3:2 = 00, 01, 10 or 11

 

 

 

 

 

 

BE1/A1,

 

 

A1:0 = 00

 

 

A1:0 = 01

A1:0 = 10

 

A1:0 =11

 

 

BE0/A0

 

 

 

 

 

 

 

WAIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D31:0,

 

 

 

 

 

 

D7:0

D7:0

D7:0

 

 

D7:0

 

 

 

 

 

 

 

Byte 0

Byte 1

Byte 2

 

 

Byte 3

 

 

DP3:0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PCHK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Datasheet

 

 

 

 

 

 

 

 

 

 

 

 

 

 

65

Page 65
Image 65
Intel 80960HA, 80960HD, 80960HT manual Blast DT/R DEN

80960HT, 80960HA, 80960HD specifications

The Intel 80960 family of microprocessors, introduced in the late 1980s, marked a significant evolution in the landscape of embedded systems and high-performance computing. The series included notable members such as the 80960HD, 80960HA, and 80960HT, each offering distinct features, technologies, and characteristics tailored for specific applications.

The Intel 80960HD was primarily designed for high-performance applications, such as real-time processing and advanced embedded control systems. With a robust architecture, the 80960HD featured a 32-bit data bus and a 32-bit address bus, enabling it to access a larger memory space and providing superior performance for computational tasks. It included a sophisticated instruction set that facilitated efficient execution, particularly for computationally intensive tasks. The internal architecture also supported pipelining, allowing multiple instructions to be processed simultaneously, thus enhancing throughput.

The 80960HA variant was tailored for high-availability applications, making it ideal for embedded systems where reliability is paramount. This model incorporated features that emphasized fault tolerance and stability, ensuring that systems relying on it could maintain operational integrity even in the event of component failures. The 80960HA showcased enhanced error detection and correction capabilities, which contributed to its reputation as a dependable choice for mission-critical applications.

On the other hand, the 80960HT was designed to meet the needs of high-performance telecommunications and networking applications. Recognized for its ability to handle multiple tasks concurrently, the 80960HT included advanced features such as built-in support for multitasking and real-time processing. This made it an excellent fit for applications that demanded rapid data handling and processing, such as routers and switches in networking environments. Its architecture allowed for efficient context switching, ensuring that multiple processes could execute seamlessly.

All three variants utilized the same family architecture, enabling easy integration and compatibility across different applications. They also supported various memory management techniques, such as virtual memory and caching, enhancing their performance in diverse operating conditions. With their combination of high processing power, reliability, and flexibility, the Intel 80960 family of microprocessors played a crucial role in advancing embedded computing technologies, paving the way for modern-day processors and systems. The 80960 series remains a noteworthy chapter in the evolution of microprocessor design, reflecting the growing demands of the computing landscape during its time.