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AK2401 データシート(PDF) 79 Page - Asahi Kasei Microsystems

部品番号 AK2401
部品情報  Direct Conversion Transceiver
Download  103 Pages
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メーカー  AKM [Asahi Kasei Microsystems]
ホームページ  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AK2401 データシート(HTML) 79 Page - Asahi Kasei Microsystems

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[AK2401]
017003093-E-00
2017/3
79
15.13. <0x17~0x18>CAL START
Address
D7
D6
D5
D4
D3
D2
D1
D0
R/W
0x17
-
-
CAL
LNAPD
OFS2REG
OFSCAL4
OFSCAL3
OFSCAL2
OFSCAL1
R/W
Initial value
0
0
0
0
0
0
0x18
-
-
-
-
CHOFS_AVE[1:0]
AGCOFS_AVE[1:0]
R/W
Initial value
0
0
0
0
Refer to
“13.8.6. DC Offset Calibration” for detailed operation of DC offset calibration.
CALLNAPD: LNA Power Down Setting for DC Offset Calibration of Analog Block (MIXER)
This bit set ON/OFF of LNA power down function for initial DC offset calibration of the analog block. LNA
is powered down during calibration by setting OFSCAL1 bit =
“1” and powered up automatically after the
calibration is finished. This setting is only valid when PD_LNA_N bit =
“1” <Address 0x2E>. Normally,
CALLNAPD bit should be set to
“1”.
0: Do not power down the LNA during the DC offset calibration of the analog block (MIXER)
1: Power down the LNA during the DC offset calibration of the analog block (MIXER)
OFS2REG: External Input Setting for DC Offset Compensation Value
This bit selects DC offset compensation value source for the channel filter block. When it is
“1”, setting
value of I ch or Q ch <Address 0x19 ~ 0x1E> is used for offset compensation instead of using calibration
result by OFSCAL2 bit. Normally, OFS3REF bit should be set to
“0”.
0: Use Calibration Result for DC Offset Compensation for the Channel Filter
1: Use Register Settings for DC Offset Compensation for the Channel Filter
OFSCAL4: Start Trigger of DC Offset Calibration for Digital (AGC) Block
DC offset calibration for digital (AGC) block starts by writing
“1” to this bit. This bit returns to “0”
automatically after the calibration is finished.
OFSCAL3: Start Trigger of DC Offset Calibration for Digital (Channel Filter) Block
DC offset calibration for digital (Channel Filter) block starts by writing
“1” to this bit. This bit returns to “0”
automatically after the calibration is finished.
OFSCAL2: Start Trigger of DC Offset Calibration for Digital (Channel Filter + AGC) Block
DC offset calibration for digital (Channel Filter + AGC) block starts by writing
“1” to this bit. This bit
returns to
“0” automatically after the calibration is finished.
OFSCAL1: Start Trigger of DC Offset Calibration for Analog Block (MIXER)
DC offset calibration for analog block (MIXER) starts by writing
“1” to this bit. This bit returns to “0”
automatically after the calibration is finished.
CHOFS_AVE[1:0]: Averaging Time of Calibration for Digital (Channel Filter) Block
Set the time of sampling data averaging process during the DC offset calibration of channel filter block.
AGCOFS_AVE[1:0]: Averaging Time of Calibration for Digital (AGC) Block
Set the time of sampling data averaging process during the DC offset calibration of AGC block.


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