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