DAC8718 Datasheet, PDF (47/60 Pages) Texas Instruments – Octal, 16-Bit, Low-Power, High-Voltage Output, Serial Input DIGITAL-TO-ANALOG CONVERTER

DAC8718
www.ti.com
SBAS467A – MAY 2009 – REVISED DECEMBER 2009
SPI SHIFT REGISTER
The SPI Shift Register is 24 bits wide, as shown in Table 9. The register mapping is shown in Table 10; X = don't
care—writing to it has no effect, reading it returns '0'.
MSB
DB23
R/W
R/W
A4:A0
DATA
Table 9. Shift Register Format
DB22
X
DB21
X
DB20
A4
DB19
A3
DB18
A2
DB17
A1
DB16
A0
DB15:DB0
DATA
Indicates a read from or a write to the addressed register.
R/W = '0' sets a write operation and the data are written to the specified register.
R/W = '1' sets a read-back operation. Bits A4 to A0 select the register to be read. The remaining bits
are don’t care bits. During the next SPI operation, the data appearing on SDO pin are from the
previously addressed register.
Address bits that specify which register is accessed.
16 data bits
Copyright © 2009, Texas Instruments Incorporated
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