AK2401 Datasheet, PDF (82/103 Pages) Asahi Kasei Microsystems – Direct Conversion Transceiver

[AK2401]
LNA_AGCOFF: LNA Gain Control Switching
LNA gain control can be applied to PGA gain setting. Normally, LNA_AGCOFF bit should be set to “0”
0: PGA gain is controlled by LNA gain control
1: PGA gain is not controlled by LNA gain control.
LNA_LGMODE: LNA Low Gain Mode
LNA low gain mode is available by setting LNA_LGMODE bit=“1”. This setting is only valid when
LNA_AGCOFF bit= “1” <Address0x20>. LNA gain mode can be changed manually.
0: Normal Gain Mode
1: Low Gain Mode
AGCMAX[2:0]: Maximum Tolerate Gain Change Amount for Single AGC Operation
Set the maximum tolerate of gain change amount for single AGC operation.
AGCMAX
[2] [1] [0]
Max Tolerate Gain
Change
Unit
0
0
0 Do Not Use This Setting
0
0
1
1
0
1
0
2
0
1
1
4
dB
1
0
0
8
1
0
1
16
1
1
0
32
1
1
1
48 (default)
AGCTGT[2:0]: Signal Power Convergence Target Level
Set the target level of AGC convergence.
AGCTGT
[2]
[1]
[0]
0
1
1
0
1
0
0
0
1
0
0
0
1
1
1
1
1
0
1
0
1
1
0
0
Convergence Level
6
4 (default)
2
0
-2
-4
-6
-8
Unit
dBm
FB_RDOC: Reflect RDOC Compensation Value to Digital (AGC) Block
DC offset value detected by RDOC will be reflected to Digital (AGC) block when FB_RDOC bit= “1”.
0: RDOC Compensation Value is not reflected to Digital (AGC) block.
1: RDOC Compensation Value is reflected to Digital (AGC) block.
017003093-E-00
82
2017/3