MAX11014BGTM+T【PDF 49/70 页】IC RF MESFET AMP 48-TQFN-EP

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Automatic RF MESFET Amplifier

Drain-Current Controllers

Table 24. LUTDAT (Read/Write)

BIT NAME

LUTDAT15–

LUTDAT0

DATA BIT

D15–D0

RESET STATE

N/A

FUNCTION

The 16-bit data word written to the LUT data or configuration memory space.

Table 25. FIFO

DATA BITS

D15

CHANNEL TAG

D14 D13

D12

D11

D10–D1

D0

CONVERSION-DATA ORIGIN

0

0

0

0

0

0

0

0

1

1

1

1

0

0

0

0

1

1

1

1

0

0

0

0

0

0

1

1

0

0

1

1

0

0

1

1

0

1

0

1

0

1

0

1

0

1

0

1

MSB

MSB

MSB

MSB

MSB

MSB

MSB

MSB

MSB

MSB

MSB

MSB

—

—

—

—

—

—

—

—

—

—

—

—

LSB

LSB

LSB

LSB

LSB

LSB

LSB

LSB

LSB

LSB

LSB

LSB

Internal temperature sensor.

Channel 1 external temperature sensor.

Channel 1 sense voltage.

Channel 1 DAC input register.

Channel 1 GATE voltage.

ADCIN1 voltage.

Channel 2 external temperature sensor.

Channel 2 sense voltage.

Channel 2 DAC input register.

Channel 2 GATE voltage.

ADCIN2 voltage.

Reserved.

LUT data value. See Table 28. Bit D12 is the MSB for the

1

1

0

D12

D11

—

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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