CDB5460AU Cirrus Logic Inc, CDB5460AU Datasheet - Page 40

• Manufacturer Part Number: CDB5460AU
• Description: EVALUATION BOARD FOR CS5460A
• Manufacturer: Cirrus Logic Inc

Specifications of CDB5460AU

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: CS5460A
• Primary Attributes: 1-Phase Current & Voltage Monitoring
• Secondary Attributes: Graphical User Interface, SPI™ & USB Interfaces
• Processor To Be Evaluated: CS5460A, C8051F320
• Interface Type: USB
• Operating Supply Voltage: 5 V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

4.1.5 Power-Down
The device has two power-down states to conserve power. If the chip is put in stand-by state, all circuitry except the
analog/digital clock generators is turned off. In the sleep state, all circuitry except the digital clock generator and the
instruction decoder is turned off. Waking up the CS5460A out of sleep state requires more time than waking the
device out of stand-by state, because of the extra time needed to re-start and re-stabilize the analog clock signal.
4.1.6 Calibration
The device has the capability of performing a system AC offset calibration, DC offset calibration, AC gain calibration,
and DC gain calibration. Calibration can be done on the voltage channel, the current channel, or both channels at
the same time. Offset and gain calibrations should NOT be performed at the same time (must do one after the oth-
er). For a given application, if DC gain calibrations are performed, then AC gain calibration should not be performed
(and vice-versa). The proper input voltages must be supplied to the device before initiating calibration.
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[V I]
R
G
O
[S1 S]0
B7
B7
1
1
B6
B6
00 = Reserved
01 = Halt and enter stand-by power saving state. This state allows quick power-on time
10 = Halt and enter sleep power saving state. This state requires a slow power-on time
11 = Reserved
00 = Not allowed
01 = Calibrate the current channel
10 = Calibrate the voltage channel
11 = Calibrate voltage and current channel simultaneously
0 = Normal operation
1 = Perform gain calibration
0 = Normal operation
1 = Perform offset calibration
Power-down state
Specifies AC calibration (R=1) or DC calibration (R=0)
Designates gain calibration
Designates offset calibration
Designates calibration channel
0
1
B5
B5
0
0
B4
B4
S1
V
B3
S0
B3
I
B2
B2
R
0
B1
B1
G
0
CS5460A
DS487F4
B0
B0
O
0