AR-B1375/AR-B1376 User s Guide

 

 

 

 

 

 

 

 

 

Name

Description

 

 

-MASTER [Input]

The MASTER is the signal from the I/O processor which

 

 

 

gains control as the master and should be held low for a

 

 

 

maximum of 15 microseconds or system memory may be

 

 

 

lost due to the lack of refresh

 

 

-MEMCS16

The Memory Chip Select 16 indicates that the present data

 

 

[Input, Open collector]

transfer is a 1-wait state, 16-bit data memory operation

 

 

-IOCS16

The I/O Chip Select 16 indicates that the present data

 

 

[Input, Open collector]

transfer is a 1-wait state, 16-bit data I/O operation

 

 

OSC [Output]

The Oscillator is a 14.31818 MHz signal used for the color

 

 

 

graphic card

 

 

-ZWS

The Zero Wait State indicates to the microprocessor that

 

 

[Input, Open collector]

the present bus cycle can be completed without inserting

 

 

 

additional wait cycle

 

Table 3-9 I/O Channel Signal’s Description

3.2.3 Hard Disk (IDE) Connector (CN4)

A 40-pin header type connector (CN4) is provided to interface with up to two embedded hard disk drives (IDE AT bus). This interface, through a 40-pin cable, allows the user to connect up to two drives in a “daisy chain” fashion. To enable or disable the hard disk controller, please use BIOS Setup program to select. The following table illustrates the pin assignments of the hard disk drive’s 40-pin connector.

 

 

 

1

 

 

 

2

 

Figure 3-8 CN4: Hard Disk (IDE) Connector

Pin

Signal

Pin

Signal

1

-RESET

2

GROUND

3

DATA 7

4

DATA 8

5

DATA 6

6

DATA 9

7

DATA 5

8

DATA 10

9

DATA 4

10

DATA 11

11

DATA 3

12

DATA 12

13

DATA 2

14

DATA 13

15

DATA 1

16

DATA 14

17

DATA 0

18

DATA 15

19

GROUND

20

NOT USED

21

NOT USED

22

GROUND

23

-IOW

24

GROUND

25

-IOR

26

GROUND

27

-IORDY

28

BALE

29

NOT USED

30

GROUND

31

IRQ 14

32

-IOCS16

33

SA 1

34

NOT USED

35

SA 0

36

SA 2

37

-CS 0

38

-CS 1

39

HD LED

40

GROUND

Table 3-1 HDD Pin Assignment

3-5

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Toshiba 386SX, AR-B1376 manual Hard Disk IDE Connector CN4, I/O Channel Signal’s Description, Pin Signal, HDD Pin Assignment

386SX, AR-B1376, AR-B1375 specifications

The Toshiba AR-B1375 and AR-B1376 are notable embedded computing solutions that incorporate the 386SX microprocessor architecture. Designed for various applications, these models focus on reliability, performance, and versatility, making them appealing choices for system integrators and developers.

At the core of the AR-B1375 and AR-B1376 is the Intel 386SX microprocessor. This landmark processor marked a significant advancement in computing technology, introducing a 32-bit architecture while maintaining compatibility with 16-bit applications. The 386SX is known for its efficient processing capabilities, offering both multitasking support and enhanced memory management. It operates at clock speeds ranging typically from 16 MHz to 25 MHz, contributing to its effectiveness in running industrial applications.

One of the key features of the AR-B1375 and AR-B1376 systems is their modular architecture, which allows for easy customization and expansion. This modularity means users can tailor the hardware according to specific requirements, making it suitable for a wide range of applications such as automation, telecommunications, and embedded systems.

Both models support various I/O options, ensuring seamless integration with peripherals and external devices. They typically come equipped with serial and parallel ports, as well as support for modern interfaces like USB. The systems also feature onboard expansion slots, enabling the addition of further functionality, such as additional memory or specialized processing units.

In terms of memory, the AR-B1375 and AR-B1376 support a range of RAM configurations, allowing users to scale their systems based on the application demands. The inclusion of EPROM and EEPROM options also facilitates easy updates and programmability, which is crucial for embedded systems that often require firmware adjustments over time.

Moreover, these models are known for their robust thermal management features, which are essential in industrial environments where conditions can be harsh. This capability ensures stable performance and longevity, reducing the risk of system failures due to overheating or environmental factors.

To summarize, the Toshiba AR-B1375 and AR-B1376, coupled with the 386SX microprocessor, offer a blend of performance, flexibility, and reliability. Their modular design, extensive I/O support, and memory scalability make them ideal for a variety of embedded computing applications, placing them as commendable options in the world of industrial computing solutions. These systems not only exemplify Toshiba's commitment to innovation but also contribute significantly to the functionality of embedded technologies in a rapidly evolving industry.