Rainbow-electronics MAX1329 Manual de usuario descargar pdf (Pagina 35)

MAX1329/MAX1330

12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,

Reference, Voltage Monitors, and Temp Sensor

______________________________________________________________________________________ 35

The four conversion modes programmed by the

APD<1:0> and AUTO<2:0> bits in the ADC Control

burst modes. In normal and fast power-down modes,

single conversions are initiated with the ADC convert

command or by toggling a configured DPIO. In fast

power-down mode, the PGA and ADC power down

between conversions to reduce power. A minimum of

16 clock cycles is required to complete a conversion in

normal or fast power-down mode.

Burst mode is initiated with one ADC convert com-

mand and continuously converts on the same channel

sending the data directly to DOUT as long as there is

activity on SCLK and CS is low. Burst mode aborts

when CS goes high. In burst mode, SCLK directly

clocks the ADC. For best performance, synchronize

SCLK with the CLKIO clock (see Figure 18). A mini-

mum of 14 clock cycles is required to complete a con-

version in burst mode.

010AB

SCLK

DIN

XXXXXXXX

DAC

DPIO

PREVIOUS OUTPUT

NEW OUTPUT

RISING EDGE TRIGGERED

X = DON'T CARE.

Figure 16. Write to DACA (AB = 0) or DACB (AB = 1) Input Register Followed by a DPIO DACA or DACB Load

N-1

SCLK

DIN

DOUT

XXX

N-2

N-3

N-1

N-2

N-3

APIO4

APIO3

APIO2

XXX

N-1

N-2

N-3

APIO1

WRITE TO MAX1329/MAX1330 TO

ENABLE SPI MODE

WRITE THROUGH MAX1329/MAX1330 TO

APIO DEVICE

NORMAL WRITE TO MAX1329/MAX1330

SET BY APIO CONTROL REGISTER

INVERTED CS

SET TO GPO

SET TO GPI

SET TO GPO

X = DON'T CARE.

Figure 17. Write to Program and Use APIO SPI Mode

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 77 78

MAX1329/MAX1330 1

Comentarios a estos manuales

Sin comentarios

Rainbow-electronics MAX1329 Manual de usuario Pagina 35

Comentarios a estos manuales

Relacionado con productos y manuales para Sensores Rainbow-electronics MAX1329