Datasheet

REV. A
AD7719
–17–
Table VIII. Registers—Quick Reference Guide
Power-On/Reset
Register Name Type Size Default Value Function
Communications Write Only 8 Bits Not Applicable All operations to other registers are initiated through
the Communications register. This controls whether
subsequent operations are read or write operations
and also selects the register for that subsequent
operation.
Status Register Read Only 8 Bits 0x00 Provides status information on conversions, cali-
brations, error conditions, and the validity of the
reference voltage.
Mode Register Read/Write 8 Bits 0x00 Controls functions such as mode of operation, channel
configuration, and oscillator operation in power-down.
Main ADC (AD0CON)
Control Register Read/Write 8 Bits 0x07 This register is used to enable the main ADC and to
configure the main ADC for range, channel selection,
16-/24-bit operation, and unipolar or bipolar operation.
Aux ADC (AD1CON)
Control Register Read/Write 8 Bits 0x01 This register is used to enable the aux ADC and to
configure the Aux ADC for range, channel selection,
unipolar or bipolar operation, and input range.
I/O (IOCON)
Control Register Read/Write 16 Bits 0x0000 This register is used to control and configure the
various excitation and burnout current source options
available on-chip along with controlling the I/O port.
Filter Register Read/Write 8 Bits 0x45 This register determines the amount of averaging
performed by the sinc filter and consequently deter-
mines the data update rate of the AD7719. The filter
register determines the update rate for both the main
and aux ADCs.
BSMBSL
0YDR1YDRLACFERON0RRE1RRE0 KCOL
BSMBSM
BSM
BSMBSMBSLBSL
BSL
BSLBSL
7FS6FS5FS4FS3FS2FS1FS0FS
BSM
2WSP1WSP0OBNIP2INIP1INE2INE1I
BSL
RID4PRID3PNE2PNE1PTAD4PTAD3PTAD2PTAD1P
BSMBSL
NEW
/R W 00 3A2A1A0A
BSMBSL
0
FUB
0NOCHCDPCSO2DM1DM0DM
BSMBSL
NE0DALW1HC0HC/U B 2NR1NR0NR
BSMBSL
NE1DA2HCA1HCA0HCA/U B 00 NRA