Dual RF LDMOS Bias Controller with
Nonvolatile Memory
FIFOEMP is set to 1 when the FIFO is empty. Once data
is placed into the FIFO, FIFOEMP is set to 0.
When in ADC monitoring mode, FIFOOVER is set to 1
when a FIFO overflow occurs. FIFOOVER remains at 1,
even if the FIFO is subsequently read and no longer
full. FIFOOVER is reset by reading the Flag register.
When in LUT streaming mode or message mode, the
FIFO is not permitted to overflow and FIFOOVER then
denotes when the FIFO is full. FIFOOVER is set to 1
Table 19. PGA Calibration Control Register
when the FIFO is full and immediately returns to 0 once
a data word is moved out of the FIFO.
HIGHI_ is set to 1 when the individual channel 1 and
channel 2 current-sense measurements exceed the
individual channel 1 and channel 2 high current thresh-
old and returns to 0 after the Flag register is read.
HIGHI2 is replaced by HIGHT2 when the INTEMP2 bit
is set in the Alarm Hardware Configuration register.
DATA BITS
D[15:3]
BIT NAME
Unused
RESET STATE
X
Unused bits.
FUNCTION
Acquisition/tracking bit. Set to 0 to force the next current-sense calibration
D2
TRACK
0
to run in acquisition mode. Set to 1 to force the next calibration to run in
tracking mode. Set TRACK to 0 the first time through a calibration.
D1
DOCAL
0
Single calibration select bit. Set to 1 perform single or self-timed
calibrations of PGA1 and PGA2. DOCAL resets to 0 after calibration.
Self-timed calibration select bit. Set to 1 to perform calibrations of PGA1
D0
SELFTIME
0
and PGA2 on a self-timed periodic basis (approximately every 13ms).
When set to 0, calibrations only occur when DOCAL is set to 1.
X = Don’t care.
NA = Not applicable.
Table 20. ADC Conversion Register
DATA BITS
D[15:8]
D7
D6
D5
D4
D3
D2
D1
D0
BIT NAME
Unused
CONCONV
ADCIN2
CS2
EXTEMP2
ADCIN1
CS1
EXTEMP1
INTEMP
RESET STATE
X
0
0
0
0
0
0
0
0
FUNCTION
Unused bits.
Continuous conversion select bit. Set to 1 to perform continuous
conversions of the selected channels.
ADCIN2 conversion select bit.
CS2 current-sense conversion select bit.
External temperature sensor 2 conversion select bit.
ADCIN1 conversion select bit.
CS1 current-sense conversion select bit.
External temperature sensor 1 conversion select bit.
Internal temperature sensor conversion select bit.
X = Don’t care.
NA = Not applicable.
______________________________________________________________________________________
61
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