CS5516-ASZ Просмотр технического описания (PDF) - Cirrus Logic
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CS5516-ASZ Datasheet PDF : 41 Pages
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CS5516, CS5520
Configuration Register
D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12
Register
DAC3 DAC2 DAC1 DAC0 EXC F1
F0 D16 G1
G0 U/B D12
Reset (R)
0
0
0
0
0
0
0
0
0
0
0
0
Register
Reset (R)
D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
A/S EC
D9
D8 CC3 CC2 CC1 CC0 D3
D2
D1
RF
0
0
0
0
0
0
0
0
0
0
0
0
BIT
DAC3
DAC2-0
NAME
DAC Sign Bit
DAC Bits
EXC
F1-F0
Excitation: Internal
External
Select Frequency
D16
G1-G0
D16
Select PGA Gain
U/B
Select Unipolar/Bipo-
lar Mode
D12
D12
A/S
Awake/Sleep
EC
Execute Calibration
D9
D8
CC3-CC0
D9
D8
Calibration Control Bits
D3
D3
D2
D2
D1
D2
RF
Reset Filter
VALUE
0
R1
1
000
R
001
010
011
100
101
110
111
0
R
1
00
R
01
10
11
0
R
00
R
10
01
11
0
R
1
0
R
0
R
1
0
R
1
0
R
0
R
0000
R
1000
0100
0010
0001
0
R
0
R
0
R
0
R
1
Add Offset
Subtract Offset
FUNCTION
This bit is read only2
25% Offset
50% Offset
75% Offset
100% Offset
125% Offset
150% Offset
175% Offset
These bits are read only2
BX1 and BX2 outputs are determined by bits F1 and F0
BX1 is an input which determines the phase of the
demodulation clock and the BX2 output
Excitation on BX1 & BX2 is dc. BX1=0 V, BX2=+5 V
Excitation Frequency on BX1 & BX2 is XIN/8192 Hz
Excitation Frequency on BX1 & BX2 is XIN/16384 Hz
Excitation Frequency on BX1 & BX2 is XIN/4096 Hz
Must always be logic 0
Gain = 1 (X25)
Gain = 2 (X25)
Gain = 4 (X25)
Gain = 8 (X25)
Bipolar Measurement Mode
Unipolar Measurement Mode
Must always be logic 0
Awake Mode
Sleep Mode
Calibration not active
Perform calibration selected by CC3-CC0 bits. EC bit
must be written back to "0" after calibration is completed
Must always be logic 0
Must always be logic 0
No calibration to be performed
Calibrate non-ratiometric offset, VREF
Calibrate non-ratiometric offset, AIN
Calibrate ratiometric offset, AIN
Calibrate gain, AIN
Must always be logic 0
Must always be logic 0
Must always be logic 0
Normal operation
Reset Filter
Notes: 1.Reset State
2.A write to these bits does not change the register bit values. These bits are just a mirror of the DAC register contents.
Table 2. Configuration Register
DS74F21
13
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