ADS54J60 Datasheet, PDF (46/76 Pages) Texas Instruments – Dual-Channel, 16-Bit, 1.0-GSPS Analog-to-Digital Converter

ADS54J60
SBAS706B – APRIL 2015 – REVISED AUGUST 2015
7.5.2.2.5 Register 26h (address = 26h), Master Page (080h)
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Figure 88. Register 26h
7
6
5
4
GLOBAL PDN
OVERRIDE
PDN PIN
PDN MASK
SEL
0
R/W-0h
R/W-0h
R/W-0h
W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
3
0
W-0h
2
0
W-0h
1
0
W-0h
0
0
W-0h
Table 28. Register 26h Field Descriptions
Bit Field
7
GLOBAL PDN
6
OVERRIDE PDN PIN
5
PDN MASK SEL
4-0 0
Type
R/W
Reset
0h
R/W
0h
R/W
0h
W
0h
Description
Bit 6 (OVERRIDE PDN PIN) must be set before this bit can be
programmed.
0 = Normal operation
1 = Global power-down via the SPI
This bit ignores the power-down pin control.
0 = Normal operation
1 = Ignores inputs on the power-down pin
This bit selects power-down mask 1 or mask 2.
0 = Power-down mask 1
1 = Power-down mask 2
Must write 0
7.5.2.2.6 Register 4Fh (address = 4Fh), Master Page (080h)
Figure 89. Register 4Fh
7
6
5
4
3
0
0
0
0
0
W-0h
W-0h
W-0h
W-0h
W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
2
0
W-0h
1
0
W-0h
0
EN INPUT DC COUPLING
R/W-0h
Table 29. Register 4Fh Field Descriptions
Bit Field
7-1 0
0
EN INPUT DC COUPLING
Type
W
R/W
Reset
0h
0h
Description
Must write 0
Enables DC coupling between analog inputs and driver by
changing internal biasing resistor between analog inputs and
VCM from 600-Ω to 5k-Ω
0 = DC-coupling support disabled
1 = DC-coupling support enabled
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