CXD1968AR
CHC_CTL_1
Read/Write
RESET: 0x01
Default R/W
Offset Address: 0x23
Bit
Name
Description
000: gain = 0
001: gain = 1/32
010: gain = 1/16
011: gain = 1/8
100: gain = 1/4
101: gain = 1/2
110, 111: gain = 1
Sets the mean pilot gain used
in the channel predictor if the
manual mean pilot bit is set.
7:5 Mean Pilot Gain
000
R/W
Set to allow the mean pilot gain to take on the value in bits 5:7.
4
Manual Mean Pilot In normal operation the mean pilot gain is adaptively adjusted
to suit the channel conditions.
0
R/W
3
2
Disable Bad Pilots Set to disable bad pilots from being dropped in the PPM.
0
0
R/W
R/W
Disable Noise
Normal
Set to disable noise normalization between scattered and
continuous pilots.
Disable CHC
Predictor
Set to disable the adaptive time domain prediction on the
pilots.
1
0
0
1
R/W
R/W
0: Linear
1: FIR
Sets the frequency domain
interpolation method used.
CHC Interpolator
CHC_SNR
Read Only
Offset Address: 0x24
Bit
Name
Description
Default R/W
Estimated signal-to-noise ratio (SNR) in dB. The value in this
register either gives the average SNR of the channel or the
SNR of a selected pilot as defined in the CHC_SNR_CARRIER
register. The estimated value is independent of the channel
response, and accurate to about ±1dB.
7:0 CHC SNR
—
R
CHC_SNR
SNR[dB] = ------------------------------
8
Note: The value compresses near the extremes.
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SONY [ SONY CORPORATION ]
