CDB5460A Datasheet, PDF (11/28 Pages) Cirrus Logic – Evaluation Board and Software

CDB5460A
Figure 2. Setup Window
value of the reset bit to ‘1’ (RS, bit 7 in the Config-
uration Register), the part will be reset, and all reg-
isters will return to their default values. Press the
Refresh Screen button after performing a reset to
update the screen with the new register values.
Note:
Although the CDB5460A software allows the
user to modify any of the bits in the
Configuration Register, changing certain bits
may cause the software and board to behave
erratically. For the evaluation system to
function properly, the Interrupt Output function
should be set to the default Active Low, and the
Eout / Edir Function should be set to the default
Normal. This applies only to the CDB5460A
evaluation system, and not to the CS5460A
chip itself.
2.4.4 Mask Register / Status Register
The Mask and Status Registers are displayed in
hexadecimal and decoded in this box to show what
each of the bits means. The Mask Register can be
modified by typing a value in the HEX: box, or by
checking the appropriate check boxes for the bits
that are to be masked. The Status Register cannot
be directly modified. It can only be reset by press-
ing the Clear Status Register Button. The HEX:
box for this register, and the LEDs are display only.
A LED that is on means that the corresponding bit
in the Status Register is set (except the Invalid
Command bit, which is inverted).
Note:
The value present in the Mask register may be
changed by the software during certain
operations to provide correct functionality of the
CDB5460A board.
2.4.5 Cycle Count / Pulse Rate / Time Base
Registers
These three boxes display the values of the Cycle
Count, Pulse Rate, and Time Base Registers in both
hexadecimal and decimal format. All three regis-
ters can be modified by typing a value in the corre-
sponding Value: or HEX: box.
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