Dual RF LDMOS Bias Controller with
Nonvolatile Memory
Table 13. Software Configuration Register
DATA BITS
D15*
D[14:12]*
BIT NAME
T2AVGCTL
T2LIMIT[2:0]
RESET STATE
0
000
FUNCTION
Channel 2 averaging-equation bit. This bit controls the averaging equation
for channel 2 while the device is in tracking mode. See Table 13a.
Channel 2 difference-limiter bits. Set T2LIMIT[2:0] to enable the difference
limiter for channel 2 temperature averaging. See Table 13b.
Channel 2 LDAC control bit. Set to 0 to load calculation results into the DAC
D11
LDAC2
0
2 input and output registers. Set to 1 to load calculation results into the
DAC 2 input register only.
D10
TCOMP2
0
Channel 2 temperature compensation enable bit. Set to 1 to allow V GATE2
calculations to be triggered by channel 2 temperature measurements.
Channel 2 APC parameter compensation enable bit. Set to 1 to allow
D9
APCCOMP2
0
V GATE2 calculations to be triggered by channel 2 current-sense
measurements or APC2 parameter changes.
Channel 2 temperature sensor select bit. Set to 0 to use the channel 2
D8
TSRC2
0
external temperature sensor as the source of the temperature parameter for
V GATE2 calculations. Set to 1 to use the internal temperature sensor.
D[7:6]
APCSRC2[1:0]
00
Channel 2 APC parameter select bits. Set APCSRC2[1:0] to select the data
source for V GATE2 calculations. See Table 13c.
Channel 1 LDAC control bit. Set to 0 to load calculation results into the DAC
D5
LDAC1
0
1 input and output registers. Set to 1 to load calculation results into the
DAC 1 input register only.
D4
TCOMP1
0
Channel 1 temperature compensation enable bit. Set to 1 to allow V GATE1
calculations to be triggered by channel 1 temperature measurements.
Channel 1 APC parameter compensation enable bit. Set to 1 to allow
D3
APCCOMP1
0
V GATE1 calculations to be triggered by channel 1 current-sense
measurements or APC1 parameter changes.
Channel 1 temperature sensor select bit. Set to 0 to use the channel 1
D2
TSRC1
0
external temperature sensor as the source of the temperature parameter for
V GATE1 calculations. Set to 1 to use the internal temperature sensor.
D[1:0]
APCSRC1[1:0]
00
Channel 1 APC parameter select bits. Set APCSRC1[1:0] to select the data
source for V GATE1 calculations. See Table 13c.
X = Don’t care.
*Write only.
______________________________________________________________________________________
53
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