Registers

Registers

S16A User’s Guide

The S16A SBus 16-bit Dual Analog Interface is configured and controlled with 8-bit and 32-bit SBus registers. Eleven additional internal registers in the Analog Input Module are accessed indirectly through the SBus registers using a simple protocol. Applications access S16A registers through library calls or ioctl calls with S16A-specific parameters, as described in the s16a.h header file.

NOTE: All registers initialized and manipulated by the S16A driver. User applications do not ordinarily need to read or write these registers.

In addition, the S16A provides a standard SBus configuration ROM at the beginning of its block of addresses. Thus the S16A answers with valid data for the first 64 KBytes, in addition to the SBus registers.

26	EDT, Inc. October, 1996

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Contents

S16A EDT, Inc. October Contents Tables Overview Installing the Software InstallationInstalling the Hardware Using SunOS Version S16A User’s Guide Installation Using System V Release 4 Solaris 2.4 or Later Building the Sample Programs Included Files Readme Input and Output Elements of S16A Applications DMA Library Routines Routine DescriptionGeneral DMA Library Routines Syntax S16abufferaddressesS16A-specific Library Routines Arguments S16acancel S16acancelcurrentS16achecknextbuffer S16aclose S16aconfigureringbuffers Arguments S16adone S16agetdaccontrolreg S16agetdiodatareg S16agetdiodirectionreg S16agetoutputbits S16aopen S16aread S16aserialread S16aserialstr S16aserialwrite S16asetdefaults S16asetdaccontrolreg S16asetdiodatareg S16asetdiodirectionreg S16asetoutputbits S16astartbuffers S16astopbuffers S16awaitforbuffer S16awaitfornextbuffer S16awrite Error Conditions FoiparityerrorError Codes and Conditions Hardware Interface Electrical Interface Interface Signals Signal S16A I/O DescriptionS16A Interface Signals Connector Pinout Pin SignalConnector Pinout Registers SBus Addresses S16A ROM DMA Registers Current DMA Address RegistersNext DMA Address Registers Current Count Registers Control and Next Count Registers DIO Direction Register Direct I/O RegistersDAC Output Control Register DIO Data Register Name Description Analog Input Module Internal RegistersDAC Output Control Register Analog Input Module Internal Registers Input Configuration Registers Input Clock Prescale Registers Trim Register Use Trim RegistersInput Gain High Byte Values Trim Registers Trim Output Offset Registers Analog Input Module Control Protocol Temperature RegisterAnalog Input Module Uart Registers Trim Input Gain Registers Write to a Clock Prescale Register Write to an Input Configuration RegisterRead from an Input Configuration Register Read from a Clock Prescale Register Uart Command/Status Register Uart Command/Status RegisterRead the Temperature Register Write to a Trim Register Xilinx Programming Registers Uart Data Register Specifications References Contacting EDT Index 15-16 Configuration ROM