NXP Semiconductors
HTRC110
HITAG reader chip
Table 13. Freeze bit description
FREEZE1 FREEZE0 Meaning
0
0
normal operation
0
1
main low pass is frozen; main high pass is precharged to QGND
1
0
main low pass is frozen; time constant of main high pass is reduced by
a factor of 16 for FILTERH=0 and by a factor 8 for FILTERH=1
1
1
time constant for main high pass is reduced by factor of 16 for
FILTERH=0 and by a factor of 8 for FILTERH=1; second high pass is
precharged
037031
Product data sheet
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Rev. 3.1 — 9 February 2010
037031
© NXP B.V. 2010. All rights reserved.
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