
TC32306FTG
2015-10-01
23
Table 6-19 Settings of NIR Filter
h'10[D1]NIR_Fil_en
h'1B[D2]NIR_Frqth1
h'1B[D1]NIR_Frqth0
Filter Enable/Disable
& Notch Frequency
0
X
X
Disable: -
1
0
0
Enable: 631 kHz
1
0
1
Enable: 659 kHz
1
1
0
Enable: 689 kHz
1
1
1
Enable: 712 kHz
X: Don’t care
To use NIR filter (h'10[D1]NIR_Fil_en = "1"), Set following registers for the threshold level of NIR
filter's detection (h'0D[D0], h'0F[D0], h'12[D1:D0], h'13[D0], h'1A[D0], h'1B[D0], h'1C[D2:D0]),
according to the Detection selections (Delay Detection; h'10[D0]Sel_Det = "0" / Pulse Count Detection;
h'10[D0]Sel_Det = "1" ). Table 6-20 is a recommended setting by Toshiba.
Table 6-20 Settings of NIR Filter (Recommended Value)
h'10[D1]
NIR_Fil_en
h'10[D0]
Sel_Det
Register value for the threshold level of NIR filter's detection (Recommended value)
Detection
NIR Filter
Performance
(IC Application)
0
-
Don’t care
-
-
1
0
h'0F[D0]NIR_L2
1 h'1B[D0]NIR_2L1 1 h'0D[D0]NIR_H2 0 h'12[D0]NIR_2H1 0
Delay
Detection
After the interference
is detected, NIR filter
becomes valid and
stays to it.
(for intermittent RX)
h'1C[D1]NIR_L1 1 h'1C[D2]NIR_2L0 0 h'13[D0]NIR_H1 0 h'12[D1]NIR_2H0
0
h'1C[D0]NIR_L0 0
-
-
h'1A[D0]NIR_H0 0
-
-
h'0F[D0]NIR_L2
1 h'1B[D0]NIR_2L1 1 h'0D[D0]NIR_H2 0 h'12[D0]NIR_2H1 0
Validity of NIR filter is
depending on the
detection of the
interference.
(for continuous RX)
h'1C[D1]NIR_L1 1 h'1C[D2]NIR_2L0 0 h'13[D0]NIR_H1 0 h'12[D1]NIR_2H0
1
h'1C[D0]NIR_L0 0
-
-
h'1A[D0]NIR_H0 0
-
-
1
h'0F[D0]NIR_L2
0 h'1B[D0]NIR_2L1 1 h'0D[D0]NIR_H2 0 h'12[D0]NIR_2H0 0
Pulse
Count
Detection
NIR filter is always
valid.
h'1C[D1]NIR_L1 0 h'1C[D2]NIR_2L0 1 h'13[D0]NIR_H1 0 h'12[D1]NIR_2H1
0
h'1C[D0]NIR_L0 0
-
-
h'1A[D0]NIR_H0 0
-
-
(2)
IF Detector
Select a type of IF Detections (Delay Detection / Pulse Count Detection) by the value of
register:h’10[D0]. Select either detector suitable to the application. Both Delay Detection and Pulse
Count Detection can convert input signal frequency (0-500 kHz) to voltage output. In Pulse Count
Detection, over 500 kHz input signal frequency is converted to the voltage output equal to 500 kHz. In
Delay Detection, the characteristic of S curve is mirror inverted at 500 kHz signal input. Select the
High Frequency Detector by the value of register:h’0F[D4] in Delay Detection, over 500 kHz input
signal frequency is converted to the voltage output equal to 500 kHz.
Table 6-21 Settings of IF Detector / High Frequency Detector
h'10[D0]Sel_Det
h'0F[D4]Hdet_en
Status
0
0
Delay Detection: High Frequency Detector Disable
0
1
Delay Detection: High Frequency Detector Enable
1
X
Pulse Count Detection
X: Don’t care
Notice:
-
IF filter characteristics affects the maximum available signal frequency of High Frequency
Detector.