MAX11014 Datasheet, PDF (49/69 Pages) Maxim Integrated Products – Automatic RF MESFET Amplifier Drain-Current Controllers

Automatic RF MESFET Amplifier
Drain-Current Controllers
Table 24. LUTDAT (Read/Write)
BIT NAME
LUTDAT15–
LUTDAT0
DATA BIT
D15–D0
RESET STATE
FUNCTION
N/A
The 16-bit data word written to the LUT data or configuration memory space.
Table 25. FIFO
DATA BITS
CHANNEL TAG
D11
D15
D14
D13
D12
0
0
0
0
MSB
0
0
0
1
MSB
0
0
1
0
MSB
0
0
1
1
MSB
0
1
0
0
MSB
0
1
0
1
MSB
0
1
1
0
MSB
0
1
1
1
MSB
1
0
0
0
MSB
1
0
0
1
MSB
1
0
1
0
MSB
1
0
1
1
MSB
1
1
0
D12
D11
D10–D1
—
—
—
—
—
—
—
—
—
—
—
—
—
CONVERSION-DATA ORIGIN
D0
LSB Internal temperature sensor.
LSB Channel 1 external temperature sensor.
LSB Channel 1 sense voltage.
LSB Channel 1 DAC input register.
LSB Channel 1 GATE voltage.
LSB ADCIN1 voltage.
LSB Channel 2 external temperature sensor.
LSB Channel 2 sense voltage.
LSB Channel 2 DAC input register.
LSB Channel 2 GATE voltage.
LSB ADCIN2 voltage.
LSB Reserved.
LUT data value. See Table 28. Bit D12 is the MSB for the
LSB LUT configuration words. Bit D11 is the MSB for all other
LUT reads.
Conversion may be corrupted. This occurs only when
1
1
1
0
MSB
—
LSB arriving data causes the FIFO to overflow at the same time
data is being read out.
1
1
1
1
MSB
—
LSB
Empty FIFO. The current value of the flag register is read
out in place of the FIFO data.
LUTADD (Write)
Write to the LUT address register to determine the num-
ber of write/read LUT locations, the base address
pointer, and the LUT configuration word. See Table 23.
Set the command byte to 7Ah to write to the LUT
address register. Set the LUTWORD bits, D15–D8, to
the number of LUT words to be read/written. Set the
LUTADD bits, D7–D0, to determine the base address
for the read/write operation.
If the top of LUT memory is reached before the
LUTWORD limit is reached, the LUT data register
read/write is discontinued. Write 00h to the LUTWORD
bits to abort an LUT read/write. See the SRAM LUTs
section for details on programming the various
LUT addresses. See Table 28 for a map of the LUT
address locations.
LUTDAT (Read/Write)
Write or read LUT data through the LUT data register.
Set the command byte to 7Ch to write to the LUT data
register. Set the command byte to FCh to read from the
LUT data register. Write 16 bits of data to the LUT data
register to load individual address locations with lookup
data. See Table 24. The address in the LUT memory
space is automatically incremented after each LUT
data register write command.
Differentiate LUT data from ADC data from the unique
LUT data channel tag 110_. See Table 25.
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