ADS8555_16 Datasheet, PDF (29/43 Pages) Texas Instruments – 16-Bit, Six-Channel, Simultaneous Sampling Analog-to-Digital Converter

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ADS8555
SBAS531D – DECEMBER 2010 – REVISED FEBRUARY 2016
7.5 Register Maps
7.5.1 Control Register (CR); Default Value = 0x000003FF
The control register settings can only be changed in software mode and are not affected when switching to
hardware mode thereafter. The register values are independent from input pin settings. Changes are active with
the rising edge of WR in parallel interface mode or with the 32nd falling SCLK edge of the access in which the
register content has been updated in serial mode. Optionally, the register can also be partially updated by writing
only the upper eight bits (C[31:24]). The CR content is defined in Table 5.
RESET
(or Power-Up)
BUSY
(C20 = C21 = 0)
PAR/SER = 1
FS
SDI
C[31:0]
Initialization Data
Continuous Update
C
[31:24]
Continuous Update
C
[31:24]
PAR/SER = 0; WORD/BYTE = 0
CS
WR
DB[15:0]
PAR/SER = 0; WORD/BYTE = 1
WR
DB[15:8]
Initialization Data
C
C
[31:16] [15:0]
Initialization Data
C
C
C
C
[31:24] [23:16] [15:8] [7:0]
Figure 35. Control Register Update Options
Update
C
[31:24]
C
[15:0]
Update
C
C
[31:24] [23:16]
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