JRC JSS-296 - NFC-296;896 Antenna Tuning Unit block diagram

6.5 NFC-296/896 Antenna Tuning Unit block diagram
RF INPUT
to Ａntenna
L0～L8
Ci0 ～Ci8
L9
Cp
Matching sensor
CPU
PIO Driver
I/F
Serial
TXD
PA_MUTE
Serial
RXD
Co0 ～Co6
Cs
ANTCURR
sensor
UNIT_A
Temperature
detection
Reset
E
+12V
E
ANT_CURR
9
9
7
30
A/D
NAH-
692/695/698
Co_on
HI_TEMP(inside>70deg)
TEMP
PCB ID
UNIT_B
Dummy
FROM
A/D
TRANS
RBK
A/D
L_PHASE
SWR_Vf
SWR_Vr
LOW_R
896 only
296 only
93