EVAL-AD7324CB AD [Analog Devices], EVAL-AD7324CB Datasheet - Page 22

• Manufacturer Part Number: EVAL-AD7324CB
• Description: 4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
• Manufacturer: AD [Analog Devices]

AD7324
REGISTERS
The AD7324 has three programmable registers, the control register, the sequence register, and the range register. These registers are write-
only registers.
ADDRESSING REGISTERS
A serial transfer on the AD7324 consists of 16 SCLK cycles. The three MSBs on the DIN line during the 16 SCLK transfer are decoded to
determine which register is addressed. The three MSBs consist of the write bit, Register Select 1 bit, and Register Select 2 bit. The register
select bits are used to determine which of the three on-board registers is selected. The write bit determines if the data on the DIN line
following the register select bits loads into the addressed register. If the write bit is 1, the bits load into the register addressed by the
register select bits. If the write bit is 0, the data on the DIN line does not load into any register.
Table 8. Decoding Register Select Bits and Write Bit
Write
0
1
1
1
Register Select 1
0
0
0
1
Register Select 2
0
0
1
1
Comment
Data on the DIN line during this serial transfer is ignored.
This combination selects the control register. The subsequent 12 bits are loaded into
the control register.
This combination selects the range register. The subsequent 8 bits are loaded into the
range register.
This combination selects the sequence register. The subsequent 4 bits are loaded into
the sequence register.
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