Datasheet

AD7176-2 Data Sheet
Rev. A | Page 20 of 68
ADC and Interface Mode Configuration
The ADC mode register and the interface mode register (see
Block A in Figure 28) configure the core peripherals to be used
by the AD7176-2 and the mode for the digital interface.
ADC Mode Register
The ADC mode register is used primarily to set the conversion
mode of the ADC to either continuous or single conversion.
The user can also select the standby and power-down modes as
well as any of the calibration modes. In addition, this register
contains the clock source select bits and the internal reference
enable bits. The reference select bits are contained in the setup
configuration registers (see the ADC Setups section for more
information).
Interface Mode Register
The interface mode register is used to configure the digital interface
operation. This register allows the user to control data-word length,
CRC enable, data + status read and continuous read mode.
Both register details are shown in Table 9 and Table 10. For
more information, see the Digital Interface section.
Table 9. ADC Mode Register
Reg Name Bits Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset RW
0x01 ADCMODE [15:8] REF_EN RESERVED SING_CYC RESERVED DELAY 0x8000 RW
[7:0] RESERVED MODE CLOCKSEL RESERVED
Table 10. Interface Mode Register
Reg Name Bits Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset RW
0x02 IFMODE [15:8] RESERVED ALT_SYNC IOSTRENGTH RESERVED DOUT_RESET 0x0000 RW
[7:0] CONTREAD DATA_STAT REG_CHECK RESERVED CRC_EN RESERVED WL16