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CDB5460A Datasheet(PDF) 11 Page - Cirrus Logic |
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CDB5460A Datasheet(HTML) 11 Page - Cirrus Logic |
11 / 28 page CDB5460A 11 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. Figure 2. Setup Window |
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