adc12d800rfrb National Semiconductor Corporation, adc12d800rfrb Datasheet - Page 56

• Manufacturer Part Number: adc12d800rfrb
• Description: 12-bit, 1.6/1.0 Gsps Rf Sampling Adc
• Manufacturer: National Semiconductor Corporation

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Calibration Adjust
(Note
Calibration Values
(Note
Reserved - ADC12D800RF
Reserved - ADC12D500RF
Bit 15
Bit 14
Bits 13:8
Bit 7
Bits 6:0
Bits 15:0
Bits 15:0
Bits 15:0
Addr: 4h (0100b)
Addr: 5h (0101b)
Addr: 6h (0110b)
Addr: 6h (0110b)
Name
Name
Name
Name
POR
POR
POR
POR
Bit
Bit
Bit
Bit
17)
17)
Res
15
15
15
15
X
1
0
0
Reserved. Must be set as shown.
CSS: Calibration Sequence Select. The default 1b selects the following calibration sequence: reset all previously
calibrated elements to nominal values, do R
selects the following calibration sequence: do not reset R
linearity Calibration. The calibration must be completed at least one time with CSS = 1b to calibrate R
Subsequent calibrations may be run with CSS = 0b (skip R
Calibration).
Reserved. Must be set as shown.
SSC: SPI Scan Control. Setting this control bit to 1b allows the calibration values, stored in Addr: 5h, to be read/
written. When not reading/writing the calibration values, this control bit should left at its default 0b setting. See
Section 16.3.3 Calibration Feature
Reserved. Must be set as shown.
SS(15:0): SPI Scan. When the ADC performs a self-calibration, the values for the calibration are stored in this
register and may be read from/ written to it. Set SSC (Addr: 4h, Bit 7) to read/write. See
Feature
Reserved. Must be set as shown.
Reserved. Must be set as shown. Although Bits 6 and 5 may be written to / read from the Control Registers, its
final internal value is set in hardware.
CSS
14
14
14
14
X
1
0
0
for more information.
13
13
13
13
0
X
0
0
12
12
12
12
1
X
1
1
11
11
11
11
1
X
1
1
Res
10
10
10
10
X
0
for more information.
1
1
X
9
1
9
9
0
9
0
IN
Calibration, do internal linearity Calibration. Setting CSS = 0b
56
SS(15:0)
X
8
1
8
8
0
8
0
Res
Res
SSC
X
7
0
7
7
0
7
0
IN
IN
to its nominal value, skip R
calibration) or 1b (full R
X
6
1
6
6
0
6
1
X
5
0
5
5
1
5
1
X
4
0
4
4
0
4
0
Res
IN
Section 16.3.3 Calibration
X
3
1
3
3
1
3
1
IN
and internal linearity
calibration, do internal
POR state: XXXXh
POR state: DB4Bh
POR state: 1C2Eh
POR state: 1C6Eh
X
2
0
2
2
1
2
1
X
1
1
1
1
1
1
1
IN
.
0
1
0
X
0
0
0
0