Sun Microsystems S16A manual Hardware Interface, Electrical Interface

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S16A User’s Guide

Hardware Interface

Hardware Interface

This section describes how to connect your device to an S16A interface, including the electrical characteristics of the signal, the signal descriptions, the timing specifications, and the connector pinout.

Electrical Interface

The two S16A analog inputs each have the following characteristics:

•100 KOhm impedance

•configurable input sources:

·differential input signals

·either of the two differential leads (“plus” and “minus”) as a single-ended signal

·either of the analog outputs

·ground

•base input range: -2.5 to +2.5 volts

•input gain adjustments ranging from 1 to 100 power, in 7 steps

•offset and gain trim adjustments

The S16A analog outputs have the following characteristics:

•low impedance (70 Ohm)

•single-ended (non-differential) signals

•20-bit precision

•range from -2.5 to +2.5 volts

•separate adjustable level offsets.

The S16A also provides 12 general-purpose I/O pins, each of which can be configured as either input or output. The outputs are TTL-level, high-impedance (1 KOhm); the inputs are TTL-level (0–5 volt) compatible.

EDT, Inc. October, 1996

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Contents S16A EDT, Inc. October Contents Tables Overview Using SunOS Version InstallationInstalling the Hardware Installing the SoftwareS16A User’s Guide Installation Building the Sample Programs Using System V Release 4 Solaris 2.4 or LaterReadme Included FilesElements of S16A Applications Input and OutputDMA Library Routines Routine DescriptionGeneral DMA Library Routines Arguments S16abufferaddressesS16A-specific Library Routines SyntaxS16acancel S16acancelcurrentS16achecknextbuffer S16aclose Arguments S16aconfigureringbuffersS16agetdaccontrolreg S16adoneS16agetdiodirectionreg S16agetdiodataregS16aopen S16agetoutputbitsS16aserialread S16areadS16aserialwrite S16aserialstrS16asetdaccontrolreg S16asetdefaultsS16asetdiodirectionreg S16asetdiodataregS16astartbuffers S16asetoutputbitsS16awaitforbuffer S16astopbuffersS16awrite S16awaitfornextbufferError Conditions FoiparityerrorError Codes and Conditions Electrical Interface Hardware InterfaceInterface Signals Signal S16A I/O DescriptionS16A Interface Signals Connector Pinout Pin SignalConnector Pinout Registers S16A ROM SBus AddressesDMA Registers Current DMA Address RegistersNext DMA Address Registers Control and Next Count Registers Current Count RegistersDIO Data Register Direct I/O RegistersDAC Output Control Register DIO Direction RegisterAnalog Input Module Internal Registers Analog Input Module Internal RegistersDAC Output Control Register Name DescriptionInput Clock Prescale Registers Input Configuration RegistersTrim Registers Trim Output Offset Registers Trim RegistersInput Gain High Byte Values Trim Register UseTrim Input Gain Registers Temperature RegisterAnalog Input Module Uart Registers Analog Input Module Control ProtocolRead from a Clock Prescale Register Write to an Input Configuration RegisterRead from an Input Configuration Register Write to a Clock Prescale RegisterWrite to a Trim Register Uart Command/Status RegisterRead the Temperature Register Uart Command/Status RegisterUart Data Register Xilinx Programming RegistersSpecifications References Contacting EDT 15-16 IndexConfiguration ROM