Index
GPIB-1014 User Manual Index-19 © National Instruments Corporation
codes for, 4-28
description, 4-31
Talker/Listener/Controller (TLC). See also Controller function; DMAC channel operation.
addressed implementation
Address Mode 1, 5-6
Address Mode 2, 5-6 to 5-7
Address Mode 3, 5-7 to 5-8
definition, 2-12
GPIB interface, 6-23 to 6-24
initialization of, 5-1 to 5-2
operation of, E-1 to E-2
overview, 5-6
programmed implementation, 5-6
sending/receiving messages
DMA transfers with carry cycle, 5-13 to 5-17
DMA transfers without carry cycle, 5-10 to 5-12
polling during DMAs, 5-17
sending and receiving data, 5-19 to 5-20
sending END or EOS, 5-17, 5-20
terminating on END or EOS, 5-19, 5-20
terminating transfer and checking results, 5-17 to 5-19
using direct memory access, 5-8 to 5-19
using programmed I/O, 5-19 to 5-20
VMEbus slave-addressing, 2-2 to 2-3
TCT (Take Control) command, 4-25
Technical support, vii
test and troubleshooting. See troubleshooting test procedures.
theory of operation
68450 DMAC
block termination, 6-19 to 6-22
DMAC channel operation, 6-15 to 6-18
initialization and transfer phases, 6-15 to 6-18
initiation and control of channel operation, 6-18 to 6-19
overview, 6-14
address decoding, 6-3 to 6-4
clock and reset circuitry, 6-4
Configuration Register 1, 6-5
Configuration Register 2, 6-6
DMA gating and control, 6-7 to 6-8
DTB Requester and Controller, 6-9 to 6-12
GPIB interface, 6-23 to 6-24
GPIB Synchronization and Interrupt Control, 6-12 to 6-14
interrupter, 6-9
test and troubleshooting, 6-24
Timing State Machine
DMA cycles, 6-7
slave cycles, 6-6 to 6-7
VMEbus interface, 6-1 to 6-3
Timing State Machine