Datasheet

Control 3 Register (Read/Write)
The CTRL3 register is an 8-bit read/write register. The byte written to the CTRL3 register determines the operation of
the modulator output.
Control 4 Register (Read/Write)
The CTRL4 register is an 8-bit read/write register. The byte written to the CTRL4 register determines whether the GPIOs
are inputs or outputs, and whether they are enabled.
BIT B07 B06 B05 B04 B03 B02 B01 B00
BIT NAME — — ENMSYNC MODBITS DATA32 — — —
DEFAULT 0 1 1 0 0 0 0 1
BIT DEFAULT LABEL FUNCTION
00 1 — Reserved bit
01 0 — Reserved bit
02 0 — Reserved bit
03 0 DATA32
32-bit data mode bit. Set DATA32 = 1 to read 32 bits of data at DOUT. Set DATA32 = 0 for 24-
bit data reads at DOUT. See the Data Register section.
04 0 MODBITS
Modulator output mode enable bit. Set MODBITS = 1 to enable the modulator output on
DOUT and GPIO1. Set MODBITS = 0 for standard data output mode on DOUT.
05 1 ENMSYNC
Modulator sychronization pulse enable bit. Set ENMSYNC = 1 to enable the synchronization
pulse for modulator output mode. Set ENMSYNC = 0 to disable the synchronization pulse for
modulator output mode.
06 1 — Reserved bit
07 0 — Reserved bit
BIT B07 B06 B05 B04 B03 B02 B01 B00
BIT NAME — DIR3 DIR2 DIR1 — DIO3 DIO2 DIO1
DEFAULT 0 0 0 0 1 1 1 1
BIT DEFAULT LABEL FUNCTION
00 1 DIO1
GPIO bit values. When GPIO is congured as an output, set the DIO bits = 0 to set the
associated GPIO output as a 0. When GPIO are congured as inputs, these bits indicate the pin
status.
01 1 DIO2
02 1 DIO3
03 1 —
04 0 DIR1
GPIO direction bits. Set the DIR bits = 0 to congure the associated GPIO as an input. The
value returned by a read of the DIO bit is the value being driven on the pin. Set the DIR bits =
1 to congure the associated GPIO as an output. The GPIO is driven to the logic value of the
associated DIO bit.
05 0 DIR2
06 0 DIR3
07 0 —
MAX11270 24-Bit, 10mW, 130dB SNR, 64ksps Delta-Sigma
ADC with Integrated PGA
www.maximintegrated.com
Maxim Integrated │ 35