Application Note 9770
INT/ HOLD
SI
SCK
CS
INT/ HOLD
SI = 100000110
SCK
CS
-70.0000 μ s
230.0000 μ s
60.0 μ s/DIV
530.0000 μ s
REAL TIME
188.0000 μ s
238.0000 μ s
10.0 μ s/DIV
288.0000 μ s
REAL TIME
NOTE: Above display shows all five words written to the HIP9011 by
the PC. The following displays show in more detail each of four words
for Gain, Filter Frequency, Integrator TC and Prescaler.
FIGURE 13. DATA WRITING SEQUENCE TO THE HIP9011 VIA
THE SPI BUS
INT/HOLD
SI = 00110000
SCK
CS
FIGURE 14. WRITING THE GAIN BYTE TO THE HIP9011
INT/ HOLD
SI = 11001010
SCK
CS
-6.0000 μ s
44.0000 μ s
10.0 μ s/DIV
94.0000 μ s
REAL TIME
284.0000 μ s
334.0000 μ s
10.0 μ s/DIV
384.0000 μ s
REAL TIME
FIGURE 15. WRITING THE BANDPASS BYTE TO THE HIP9011
FIGURE 16. WRITING THE INTEGRATOR BYTE TO THE
HIP9011
INT/ HOLD
SI = 01000001
SCK
CS
94.0000 μ s
144.0000 μ s
10.0 μ s/DIV
194.0000 μ s
REAL TIME
FIGURE 17. WRITING THE PRESCALER BYTE TO THE HIP9011
14
AN9770.1
November 6, 2006
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