CS5521-AP View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
CS5521-AP Datasheet PDF : 56 Pages
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CS5521/22/23/24/28
D23(MSB) D22
D21
D20
D19
D18
D17
D16
D15
D14
D13
D12
NU
NU CFS1 CFS0 NU
MC
LP
RC
DP3 DP2 DP1 DP0
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
PSS
PD
PS/R LPM
RS
RV
OD
OF
NU
NU
NU
NU
BIT
D23-D22
D21-D20
D19
D18
D17
D16
D15-D12
D11
D10
D9
D8
D7
D6
D5
D4
D3-D0
NAME
Not Used, NU
Chop Frequency Select,
CFS1-CFS0
Not Used, NU
Multiple Conversion, MC
VALUE
00
00
01
10
11
0
0
1
Loop, LP
0
1
Read Convert, RC
0
1
Depth Pointer, DP3-DP0
0000
.
.
1111
Power Save Select, PSS 0
1
Pump Disable, PD
0
1
Power Save/Run, PS/R
0
1
Low Power Mode, LPM
0
1
Reset System, RS
0
1
Reset Valid, RV
0
1
Oscillation Detect, OD
0
1
Overrange Flag, OF
0
1
Not Used, NU
0000
FUNCTION
R* Must always be logic 0.
R 256 Hz Amplifier chop frequency.
4,096 Hz Amplifier chop frequency.
16,384 Hz Amplifier chop frequency.
1,024 Hz Amplifier chop frequency.
(XIN = 32.768 kHz)
R Must always be logic 0.
R Perform single-Setup conversions. MC bit is ignored during calibrations.
Perform multiple-Setup conversions on Setups in the channel-setup reg-
ister by issuing only one command with MSB = 1.
R The conversions on the single Setup (MC = 0) or multiple Setups (MC =
1) are performed only once.
The conversions on the single Setup (MC = 0) or multiple Setups (MC =
1) are continuously performed.
R Don’t wait for user to finish reading data before starting new conversions.
The RC bit is used in conjunction with the LP bit when the LP bit is set to
logic 1. If LP = 0, the RC bit is ignored. If LP = 1, the ADC waits for user to
read data conversion(s) before converting again. The RC bit is ignored
during calibrations. Refer to Calibration Protocol for details.
R When writing or reading the CSRs, these bits (DP3-DP0) determine the
number of CSR’s to be accessed. They are also used to determine how
many Setups are converted when MC=1 and a command byte with its
MSB = 1 is issued. Note that the CS5522 has two CSRS, the CS5524 has
four CSRs, and the CS5528 has 8 CSRs.
R Standby Mode (Oscillator active, allows quick power-up).
Sleep Mode (Oscillator inactive).
R Charge Pump Enabled.
For PD = 1, the CPD pin goes to a Hi-Z output state.
R Run.
Power Save.
R Normal Mode (LPM bit is only for the CS5522/24/28)
Reduced Power Mode
R Normal Operation.
Activate a Reset cycle. To return to Normal Operation write bit to zero.
No reset has occurred or bit has been cleared (read only).
R Bit is set after a Valid Reset has occurred. (Cleared when read.)
R Bit is clear when an oscillation condition has not occurred (read only).
Bit is set when an oscillatory condition is detected in the modulator.
R Bit is clear when an overrange condition has not occurred (read only).
Bit is set when input signal is more positive than the positive full scale,
more negative than zero (unipolar mode), or when the input is more neg-
ative than the negative full scale (bipolar mode).
R Must always be logic 0.
* R indicates the bit value after the part is reset
Table 4. Configuration Register
30
DS317F2
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