Cirrus Logic CS5526 - Manual (Page 12)

CS5525 CS5526
12 DS202F5
Configuration Register
* R indicates the bit value after the part is reset
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 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,
CFS 0
1 R 256 Hz Amplifier chop frequency
32768 Hz Amplifier chop frequency
D17 Not Used, NU 0 R Must always be logic 0.
D16 Low Power Mode, LPM 0
1 R Normal Mode
Reduced Power mode
D15-D13 Word Rate, WR2-0
Note: For
XIN = 32.768kHz 000
001
010
011
100
101
110
111
R 15.0 Sps (2182 XIN cycles)
30.1 Sps (1090 XIN cycles)
60.0 Sps (546 XIN cycles)
123.2 Sps (266 XIN cycles)
168.9 Sps (194 XIN cycles)
202.3 Sps (162 XIN cycles)
3.76 Sps (8722 XIN cycles)
7.51 Sps (4362 XIN cycles)
D12 Unipolar/Bipolar, U/B 0
1 R Bipolar Measurement mode
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
1 V
5.0 V
2.5 V
Not Used.
D8 Pump Disable, PD 0
1 R Charge Pump Enabled
For PD = 1, the CPD pin goes to a Hi-Z output state.
D7 Reset System, RS 0
1 R Normal Operation
Activate a Reset cycle. To return to Normal Operation write bit to zero.
D6 Reset Valid , RV 0
1
R
No reset has occurred or bit has been cleared (read only).
Valid Reset has occurred. (Cleared when read.)
D5 Port Flag, PF 0
1 R Port Flag mode inactive
Port Flag mode active
D4 Power Save Select, PSS 0
1 R Standby Mode (Oscillator active, allows quick power-up)
Sleep Mode (Oscillator inactive)
D3 Done Flag, DF 0
1 R 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
R 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.
Table 2. Configuration Register