CDB5467U Cirrus Logic Inc, CDB5467U Datasheet - Page 34

• Manufacturer Part Number: CDB5467U
• Description: BOARD EVAL FOR CS5467 ADC
• Manufacturer: Cirrus Logic Inc
• Type: A/Dr

Specifications of CDB5467U

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: CS5467
• Primary Attributes: Watt-Hour Meter
• Secondary Attributes: Graphical User Interface, SPI™ & USB Interfaces
• Product: Data Conversion Development Tools
• Maximum Clock Frequency: 4 MHz
• Interface Type: USB
• Supply Voltage (max): 5 V
• Supply Voltage (min): 3.3 V
• For Use With/related Products: CS5467
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 598-1555; CDB-5467U

8.3 Page 1 Registers
8.3.1 DC Offset for Current (I1
8.3.2 Gain for Current (I1
8.3.3 Power Offset (P1
8.3.4 AC Offset for Current (I1
34
MSB
MSB
MSB
MSB
-(2
-(2
-(2
2
1
0
0
0
)
)
)
Address: 0 ( I1
Default = 0
DC offset registers I1
tion, selected registers are written with the inverse of the DC offset measured. The application program can
also write the DC offset register values. These are two's complement values in the range of -1.0 ≤ value < 1.0,
with the binary point to the right of the MSB.
Address: 1 ( I1
Default = 1.0
Gain registers I1
tion, selected register are written with the multiplicative inverse of the gain measured. These are unsigned
fixed-point values in the range of 0 ≤ value < 4.0, with the binary point to the right of the second MSB.
A
Default = 0
Power offset P1
P1
ment values in the range of -1.0 ≤ value < 1.0, with the binary point to the right of the MSB.
Address: 5 ( I1
Default = 0
AC offset registers I1
to the RMS results before being stored to the RMS result registers. They can be used to reduce systematic
errors in the RMS results. These are two's complement values in the range of -1.0 ≤ value < 1.0, with the bi-
nary point to the right of the MSB.
ddress: 4 ( P1
AVG
2
2
2
2
-1
-1
-1
0
( P2
2
2
2
2
AVG
-2
-1
-2
-2
OFF
GAIN
ACOFF
OFF
) register results. It can be used to reduce systematic energy errors. These are two's comple-
OFF
GAIN
2
2
2
2
), 2 ( V1
-3
-2
-3
-3
), 3 ( V1
), 11 ( P2
OFF
( P2
), 6 ( V1
ACOFF
OFF
& V1
GAIN
OFF
, P2
2
2
2
2
-4
& V1
-3
-4
-4
OFF
GAIN
GAIN
, I2
ACOFF
OFF
& V1
) is added to instantaneous power and averaged over a low-rate interval to yield
OFF
ACOFF
OFF
), 7 ( I2
OFF
GAIN
( I2
), 8 ( I2
2
2
2
2
, I2
)
ACOFF
-5
-4
-5
-5
)
GAIN
( I2
, I2
), 12 ( I2
OFF
OFF
) and Voltage (V1
OFF
GAIN
ACOFF
2
2
2
2
& V2
(
-6
-5
-6
-6
V
) and Voltage (V1
), 9 ( V2
ACOFF
& V2
ACOFF
), 10 ( V2
GAIN
) and Voltage (V1
2
2
2
2
OFF
-7
-6
-7
-7
OFF
&
) are initialized to 1.0 on reset. During AC or DC gain calibra-
), 13 ( V2
V2
) are initialized to zero on reset. During DC offset calibra-
GAIN
)
ACOFF
.....
.....
.....
.....
GAIN
)
ACOFF
)
OFF
2
2
2
2
are initialized to zero on reset. These are added
-17
-16
-17
-17
, V2
, V2
)
ACOFF
GAIN
2
2
2
2
-18
-17
-18
-18
OFF
)
, V2
)
2
2
2
2
-19
-18
-19
-19
ACOFF
2
2
2
2
-20
-19
-20
-20
)
2
2
2
2
-21
-20
-21
-21
CS5467
2
2
2
2
-22
-21
-22
-22
DS714F1
LSB
LSB
LSB
LSB
2
2
2
2
-23
-22
-23
-23