Rainbow Electronics MAX1386 - Manual (Page 32)

MAX1385/MAX1386
Dual RF LDMOS Bias Controllers
with I
2 C/SPI Interface
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Table 14). Bits D15–D10 are don’t care. A write to these
registers does not trigger the autocalibration but imme-
diately updates the output of the DAC by transferring
the DAC input register to the DAC output register (writ-
ing through the input register). POR contents for these
registers are all zeros. Read the DAC input register val- ues written to Fine DAC1 and DAC2 Input registers
through the Fine DAC1/DAC2 Input Read register.
These read registers contain the latest user write to any
Fine DAC1 or Fine DAC2 Input Read register and do
not contain autocalibration corrected values.
BIT NAME DATA BIT POR FUNCTION
X D15–D12 X Don’t care
ALMSCLR D11 0
1 = Temp/current thresholds set to POR state
0 = Temp/current thresholds unaffected
ALARMCMP D10 0
1 = ALARM in output-comparator mode
0 = ALARM in output-interrupt mode
ALARMHYST1 D9 0
ALARMHYST0 D8 0
Thresholds hysteresis (ALARMHYST1 is MSB)
00 = 8 LSBs of hysteresis
01 = 16 LSBs of hysteresis
10 = 32 LSBs of hysteresis
11 = 64 LSBs of hysteresis
TALARM2 D7 0
1 = SAFE2 and ALARM dependent on channel 2 temperature
0 = SAFE2 and ALARM not dependent on channel 2 temperature
TWIN2 D6 0
1 = Channel 2 temperature thresholds are in window-threshold mode
0 = Channel 2 temperature thresholds are in hysteresis-threshold mode
IALARM2 D5 0
1 = SAFE2 and ALARM dependent on channel 2 current
0 = SAFE2 and ALARM not dependent on channel 2 current
IWIN2 D4 0
1 = Channel 2 current thresholds are in window-threshold mode
0 = Channel 2 current thresholds are in hysteresis-threshold mode
TALARM1 D3 0
1 = SAFE1 and ALARM dependent on channel 1 temperature
0 = SAFE1 and ALARM not dependent on channel 1 temperature
TWIN1 D2 0
1 = Channel 1 temperature thresholds are in threshold-window mode
0 = Channel 1 temperature thresholds are in hysteresis-threshold mode
IALARM1 D1 0
1 = SAFE1 and ALARM dependent on channel 1 current
0 = SAFE1 and ALARM not dependent on channel 1 current
IWIN1 D0 0
1 = Channel 1 current thresholds are in window-threshold mode
0 = Channel 1 current thresholds are in hysteresis-threshold mode
Table 8. ALMSCFG (Read/Write)
X = Don’t care.
BIT NAME DATA BIT POR FUNCTION
HCAL D15 1
1 = High wiper autocalibration.
0 = No high wiper autocalibration.
— D14–D8 X Don’t care.
— D7–D0 0000 0000 8-bit coarse high wiper DAC input code. D7 is the MSB.
Table 9. HIWIPE1 and HIWIPE2 (Read/Write)