
ISD5008
Publication Release Date: Oct 31 2008
- 26 -
Revision 1.2
a temporary register in the ISD5008 and does not affect the internal settings of the device. The
next time Configuration Register 1 is loaded, data will also transfer from the temporary register to
the Configuration Register 0 and effect the desire changes. See Figure & Table 13.
2. Configuration Registers may be loaded with data at any time, including when the chip is powered
down using the PU bit in the SPI Control Resgister. The PU bit in the SPI Control Word will have
to be set to a “1” before the changes in configurarion will be seen.
FIGURE 13: Configuration Register Programming Sequence
Temporary Register
Configuration Register 0
Configuration Register 1
Command =
Load Configuration Register 0
MOSI
Input Shift Register
LSB
A0
A15 C
0
C
7
Command =
Load Configuration Register 1
FIGURE 14: SPI Interface Simplified Block Diagram