Interface Registers - National Instruments Corporation GPIB-1014P User Manual

Register Bit Descriptions Section Four

Interface Registers

All program registers are GPIB interface registers; eight are read only, eight are write only, and five
are hidden or indirectly accessible. All are located within the NEC µPD7210
Talker/Listener/Controller (TLC) integrated circuit. Each of the 16 interface registers is addressed
relative to the GPIB-1014P VMEbus base address which is set with DIP switches (refer to Base
Address in Section Three).
Figure 4-1 shows the µPD7210 Interface registers, the bit mnemonics of each, its read/write
accessibility, and its relative address. Figure 4-2 shows the hidden GPIB interface registers and
illustrates the method of writing to those registers via the Auxiliary Mode Register. A detailed
function description of all 16 interface registers is provided in the paragraphs following the figures.
GPIB-1014P User Manual 4-4 © National Instruments Corporation