AK2400 Datasheet, PDF (29/52 Pages) Asahi Kasei Microsystems – High integrated receiver for PMR-LMR

[AK2400]
AGC_KEEP_SEL： Select AGC function of gain keeping
This register set the control way of the function of gain keeping.
0 : Control by the register {AGC_KEEP} setting (default)
1 : Control by the pin of AGC_KEEP
SDATAOUT_OE： Select output signal of DETO/SDATAOUT pin
The signal of DETO or SDATAOUT can be output from DETO/SDATAOUT pin.
0 : DETO signal output (default)
1 : SDATAOUT signal output
FMIX_IP3： NF/IIP3 priority select of 1st Mixer
IIP3 performance of 1st Mixer is improved by setting {FMIX_IP3}=1 without more supply
current. Then Current Adjustment Resistor (BIAS1/2) must be used < 47kΩ. If NF
performance is more important than IIP3, setting {FMIX_IP3}=0.
0 : NF performance is preference (default)
1 : IIP3 performance improvement
FMIX_HV： High IIP3 mode of 1st Mixer
IIP3 performance of 1st Mixer is improved by adjustment of BIAS1/2 resistance and setting
{FMIX_HV}=”1”. When FMIX_HV=”1” setting, MIXVDD must be set more than 4.5V.
0 : BIAS1/2  39kΩ (default)
1 : 18kΩ ≤ BIAS1/2 < 39kΩ
PDTRI_N： Tripler circuit On/Off
REFIN signal can be input from LO2NDIN pin by setting tripler circuit off.
Then REFIN input is one third of the 2nd LO input frequency.
0 : Off (default)
1 : On
PDSYNTH_N： SYNTH On/Off
0 : Off (default)
1 : On
PDADC_N： ADC On/Off
0 : Off (default)
1 : On
PDFSTMIX_N： 1st MIXER On/Off
0 : Off (defaut)
1 : On
BSSEL_FMIX： Bias resistance select
0 : BIAS2 pin is enable (default)
1 : BIAS1 pin is enable
Address Ox0B
R_AGC1_G[5:0]： Read the gain setting of AGC1 when {AGC_OFF}=0
R_AGC2_G[4:0]： Read the gain setting of AGC2 when {AGC_OFF}=0
014008989-E-01
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2015/4