CS5525-BP Просмотр технического описания (PDF) - Cirrus Logic
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CS5525-BP Datasheet PDF : 29 Pages
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CS5525 CS5526
Configuration Register
D23(MSB) D22
D21
D20
D19
D18
A3
A2
A1
A0
NU
CFS
D17
D16
D15
D14
D13
D12
NU
LPM WR2 WR1 WR0 U/B
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
G2
G1
G0
PD
RS
RV
PF
PSS
DF
CC2 CC1 CC0
BIT
NAME
VALUE
FUNCTION
D23-D20 Latch Outputs, A3-A0
0000 R* Latch Output Pins A3-A0 mimic the D23-D20 Register bits.
D19
Not Used, NU
0
R Must always be logic 0.
D18
Chop Frequency Select,
0
R 256 Hz Amplifier chop frequency
CFS
1
32768 Hz Amplifier chop frequency
D17
Not Used, NU
0
R Must always be logic 0.
D16
Low Power Mode, LPM
0
R Normal Mode
1
Reduced Power mode
D15-D13 Word Rate, WR2-0
Note: For
XIN = 32.768kHz
000 R 15.0 Hz (2182 XIN cycles)
001
30.1 Hz (1090 XIN cycles)
010
60.0 Hz (546 XIN cycles)
011
123.2 Hz (266 XIN cycles)
100
168.9 Hz (194 XIN cycles)
101
202.3 Hz (162 XIN cycles)
110
3.76 Hz (8722 XIN cycles)
111
7.51 Hz (4362 XIN cycles)
D12
Unipolar/Bipolar, U/B
0
R Bipolar Measurement mode
1
Unipolar Measurement mode
D11-D9 Gain Bits, G2-G0
000
001
010
011
100
101
110/111
R 100 mV (assumes VREF = 2.5V)
55 mV
25 mV
1V
5.0 V
2.5 V
Not Used.
D8
Pump Disable, PD
0
R Charge Pump Enabled
1
For PD = 1, the CPD pin goes to a Hi-Z output state.
D7
Reset System, RS
0
R Normal Operation
1
Activate a Reset cycle. To return to Normal Operation write bit to zero.
D6
Reset Valid , RV
0
No reset has occurred or bit has been cleared (read only).
1
R Valid Reset has occurred. (Cleared when read.)
D5
Port Flag, PF
0
R Port Flag mode inactive
1
Port Flag mode active
D4
Power Save Select, PSS 0
R Standby Mode (Oscillator active, allows quick power-up)
1
Sleep Mode (Oscillator inactive)
D3
Done Flag, DF
0
R Done Flag bit is cleared (read only).
1
Calibration or Conversion cycle completed (read only).
D2-D0
Calibration Control Bits,
CC2-CC0
000 R Normal Operation (no calibration)
001
Offset -- Self-Calibration
010
Gain -- Self-Calibration
011
Offset Self-Calibration followed by Gain Self-Calibration
100
Not used.
101
Offset -- System Calibration
110
Gain -- System Calibration
111
Not Used.
* R indicates the bit value after the part is reset
Table 2. Configuration Register
12
DS202F3
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