©
National Instruments Corporation
2-1
Static DIO Register-Level Programmer Manual
2
Register Map and Descriptions
Table 2-2 shows the register map for the NI 6509, 651
x
, 6520, 6521, and 6528 devices. The
table gives the register name, the register address offset from the device base address (Base
Address Register 1), the size of the register in bits, and the type of register (read-only,
write-only, or read and write).
Registers are grouped in the table by function. A bit-by-bit description of each register follows
the table.
The following sections show the register map for the NI 6509/651
x
/6520/6521/6528 devices
with the registers sorted by function.
All NI 6509/651
x
/6520/6521/6528 devices have the same addresses for common registers.
