Diamond Systems 16-Channel 12-Bit Analog Output PC/104 Module Output Operations, Input Operations

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82C55A

 

 

tWOB

 

WR

 

 

 

tAOB

 

OBF

 

 

INTR

tWIT

 

 

 

ACK

 

 

 

tAK

tAIT

OUTPUT

 

 

 

tWB

 

FIGURE 9. MODE 1 (STROBED OUTPUT)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PA7-PA0

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STBA

CONTROL WORD

 

 

RD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC5

 

 

 

 

 

 

IIBFA

D7

D6

D5

D4

D3

D2

D1

D0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC3

 

 

 

 

 

 

INTRA

1

0

1

1

1/0

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC6, PC7

 

 

 

 

 

 

I/O

 

 

 

 

 

 

 

 

PC6, PC7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 = INPUT

PB7, PB0

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 = OUTPUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OBFB

 

 

 

 

 

 

 

 

WR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ACKB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC0

 

 

 

 

 

INTRB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PORT A - (STROBED INPUT)

 

 

 

 

 

 

 

 

 

 

 

 

PORT B - (STROBED OUTPUT)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PA7-PA0

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OBFA

CONTROL WORD

 

 

WR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D2

D1

D0

PC6

 

 

 

 

 

 

ACKA

D7

D6

D5

D4

D3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC3

 

 

 

 

 

 

INTRA

1

0

1

0

1/0

1

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC4, PC5

 

 

 

 

 

 

I/O

 

 

 

 

 

 

 

 

PC4, PC5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 = INPUT

PB7, PB0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 = OUTPUT

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STBB

 

 

 

 

 

 

 

 

RD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC1

 

 

 

 

IBFB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC0

 

 

 

 

INTRB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PORT A - (STROBED OUTPUT)

 

 

 

 

 

 

 

 

 

 

 

 

 

PORT B - (STROBED INPUT)

Combinations of Mode 1: Port A and Port B can be individually defined as input or output in Mode 1 to support a wide variety of strobed I/O applications.

FIGURE 10. COMBINATIONS OF MODE 1

Operating Modes

Mode 2 (Strobed Bi-Directional Bus I/O)

The functional configuration provides a means for communi- cating with a peripheral device or structure on a single 8-bit bus for both transmitting and receiving data (bi-directional bus I/O). “Hand shaking” signals are provided to maintain proper bus flow discipline similar to Mode 1. Interrupt gener- ation and enable/disable functions are also available.

Mode 2 Basic Functional Definitions:

•Used in Group A only

•One 8-bit, bi-directional bus Port (Port A) and a 5-bit control Port (Port C)

•Both inputs and outputs are latched

•The 5-bit control port (Port C) is used for control and status for the 8-bit, bi-directional bus port (Port A)

Bi-Directional Bus I/O Control Signal Definition

(Figures 11, 12, 13, 14)

INTR - (Interrupt Request). A high on this output can be used to interrupt the CPU for both input or output operations.

Output Operations

OBF - (Output Buffer Full). The OBF output will go “low” to indicate that the CPU has written data out to port A.

ACK - (Acknowledge). A “low” on this input enables the three-state output buffer of port A to send out the data. Oth- erwise, the output buffer will be in the high impedance state.

INTE 1 - (The INTE flip-flop associated with OBF). Con- trolled by bit set/reset of PC4.

Input Operations

STB - (Strobe Input). A “low” on this input loads data into the input latch.

IBF - (Input Buffer Full F/F). A “high” on this output indicates that data has been loaded into the input latch.

INTE 2 - (The INTE flip-flop associated with IBF). Controlled by bit set/reset of PC4.

10

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Contents RUBY-MM-1612 Table of Contents Description O Header Pinout Signal Name DefinitionBase Address Board ConfigurationBase Address Configuration Header J5 Position Hex Decimal Adjustable Reference Voltage Analog Output Range ConfigurationOn-Board Reference Full-Scale Voltage Selection Full-Scale VoltageAnalog Output Configuration Header J4 Range RUBY-MM-1612 Board Drawing Base + Write Function Read Function Reset informationRuby-MM-1612 I/O Map Register Definitions Base + 0 or 1, Read Update DACsBase + 0, Write DAC LSB register Base + 1, Write DAC MSB registerBase + 3, Write External trigger register 82C55 Digital I/O Chip Operation Configuration Register82C55 Register Map DefinitionsFull Scale Analog Output Ranges and ResolutionFull Scale 1LSB 10. D/A Code Computation Output Code Explanation Output Voltage for ±5V Range Offset Binary Coding for bipolar output rangesLSB = 1/2048 x Full-Scale Voltage To generate an analog output on one or more channels HOW to Generate AN Analog OutputHardware Update Command Two channel output Examples Single channel outputCalibration Procedure Miscellaneous SpecificationsOrdering Information FeaturesDescription Pinouts82C55A Pin Description Functional DiagramData Bus Buffer 82C55A Functional DescriptionRead/Write and Control Logic Group a and Group B Controls82C55A Mode SelectionOperational Description Ports A, B, and COperating Modes Single Bit Set/Reset Feature FigureInterrupt Control Functions Inte Flip-Flop DefinitionMode 0 Configurations Mode 0 Basic InputMode 0 Basic Output Control Word #4 Control Word #8 IBF Input Buffer Full F/F Input Control Signal DefinitionSTB Strobe Input Intr Interrupt Request Output Control Signal DefinitionBi-Directional Bus I/O Control Signal Definition Mode 2 Strobed Bi-Directional Bus I/OOutput Operations Input OperationsMode Control Word Mode 2 Combinations Current Drive Capability Special Mode Combination ConsiderationsReading Port C Status Figures 15 Applications of the 82C55A

RUBY-MM-1612, 16-Channel 12-Bit Analog Output PC/104 Module specifications

The Diamond Systems RUBY-MM-1612 is a versatile 16-channel 12-bit analog output PC/104 module designed to meet the demanding needs of various applications requiring precise analog signal generation. This module excels in environments ranging from industrial automation to scientific research, providing users with reliable performance and high-quality output.

Key features of the RUBY-MM-1612 include its capability to deliver 16 independent analog output channels. Each of these channels supports a resolution of 12 bits, enabling the generation of finely detailed signals for a wide range of applications. The analog outputs are voltage scalable, allowing users to select various output ranges, which enhances the module's flexibility in different system configurations.

Another notable characteristic is the onboard architecture, which employs a specialized digital-to-analog converter (DAC) with excellent linearity and minimal noise, ensuring that the output signals are both accurate and stable. The DAC's specifications allow for output signals with a maximum voltage range of ±10V, providing ample headroom for many applications.

In terms of connectivity, the module utilizes the PC/104 standard, known for its ruggedness and compact form factor. This design allows for easy integration into systems, making it ideal for space-constrained environments. The RUBY-MM-1612 features a robust interface that supports various protocols, ensuring compatibility with a wide array of PC/104 systems.

The module also includes a comprehensive set of support software tools, making it user-friendly for developers. The drivers and libraries provided for various programming environments simplify the process of integrating the module into existing systems, reducing development time and effort.

Additionally, the RUBY-MM-1612 is built for durability, with operational specifications that accommodate a wide temperature range. This reliability makes it suitable for outdoor installations and harsh conditions, where other systems may fail.

In summary, the Diamond Systems RUBY-MM-1612 is an advanced 16-channel 12-bit analog output PC/104 module that combines high performance with flexibility and ease of integration. Its robust features, modern technologies, and durability make it an excellent choice for engineers and developers looking for reliable solutions in analog signal generation. Whether in industrial control systems, data acquisition, or laboratory settings, the RUBY-MM-1612 stands out as a top-tier option for fulfilling complex analog output requirements.
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