Texas Instruments CC1101 - Page 87

CC1101
SWRS061H Page 87 of 98
0x1D: AGCCTRL0 – AGC Control
Bit
Field Name
Reset
R/W
Description
7:6
HYST_LEVEL[1:0]
2 (10)
R/W
Sets the level of hysteresis on the magnitude deviation (internal AGC
signal that determine gain changes).
Setting
Description
0 (00)
No hysteresis, small symmetric dead zone, high gain
1 (01)
Low hysteresis, small asymmetric dead zone, medium
gain
2 (10)
Medium hysteresis, medium asymmetric dead zone,
medium gain
3 (11)
Large hysteresis, large asymmetric dead zone, low
gain
5:4
WAIT_TIME[1:0]
1 (01)
R/W
Sets the number of channel filter samples from a gain adjustment has
been made until the AGC algorithm starts accumulating new samples.
Setting
Channel filter samples
0 (00)
8
1 (01)
16
2 (10)
24
3 (11)
32
3:2
AGC_FREEZE[1:0]
0 (00)
R/W
Control when the AGC gain should be frozen.
Setting
Function
0 (00)
Normal operation. Always adjust gain when required.
1 (01)
The gain setting is frozen when a sync word has been
found.
2 (10)
Manually freeze the analogue gain setting and
continue to adjust the digital gain.
3 (11)
Manually freezes both the analogue and the digital
gain setting. Used for manually overriding the gain.
1:0
FILTER_LENGTH[1:0]
1 (01)
R/W
2-FSK, 4-FSK, MSK: Sets the averaging length for the amplitude from
the channel filter.
ASK, OOK: Sets the OOK/ASK decision boundary for OOK/ASK
reception.
Setting
Channel filter
samples
OOK/ASK decision boundary
0 (00)
8
4 dB
1 (01)
16
8 dB
2 (10)
32
12 dB
3 (11)
64
16 dB
0x1E: WOREVT1 – High Byte Event0 Timeout
Bit
Field Name
Reset
R/W
Description
7:0
EVENT0[15:8]
135 (0x87)
R/W
High byte of EVENT0 timeout register
RESWOR
XOSC
Event
EVENT
f
t
_5
0
20
750
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