CDB5460AU Cirrus Logic Inc, CDB5460AU Datasheet - Page 47

• 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

5.5 Pulse-Rate Register
5.6 I,V,P,E Signed Output Register Results
5.7 I
5.8 Timebase Calibration Register
DS487F4
MSB
MSB
MSB
MSB
-(2
2
2
2
18
-1
0
0
Default** = 1.000
The Timebase Calibration Register is initialized to 1.0 on reset, allowing the device to function and perform com-
putations. The register can be loaded with the clock frequency error to compensate for a gain error caused by
the crystal/oscillator tolerance. The value is in the range 0.0 ≤ TBC < 2.0.
Address: 6
Default** = 32000.00Hz
The Pulse-Rate Register determines the frequency of the train of pulses output on the EOUT pin. Each EOUT
pulse represents a predetermined magnitude of real (billable) energy. The register’s smallest valid value is 2
but can be in 2
Address: 7 - 10
These signed registers contain the last value of the measured results of I, V, P, and E. The results are in the
range of -1.0 ≤ I, V, P, E < 1.0. The value is represented in two's complement notation, with the binary point
place to the right of the MSB (which is the sign bit). I, V, P, and E are output results registers which contain
signed values. Note that the I, V, and P Registers are updated every conversion cycle, while the E Register is
only updated after each computation cycle. The numeric format of this register is two’s complement notation.
Address: 11,12
These unsigned registers contain the last value of the calculated results of I
the range of 0.0 ≤ I
the left of the MSB. I
Address: 13
)
RMS
2
2
2
2
, V
17
-1
-2
-1
RMS
2
2
2
2
16
-2
-3
-2
Unsigned Output Register Results
-5
increments.
RMS
2
2
2
2
15
-3
-4
RMS
-3
,V
RMS
and V
2
2
2
2
14
-4
-5
-4
< 1.0. The value is represented in binary notation, with the binary point place to
RMS
2
2
2
2
13
-5
-6
-5
are output result registers which contain unsigned values.
2
2
2
2
12
-6
-7
-6
2
2
2
2
11
-7
-8
-7
.....
.....
.....
.....
2
2
2
2
-17
-18
-17
1
2
2
2
2
-18
-19
-18
0
RMS
2
2
2
2
-19
-20
-19
-1
and V
2
2
2
2
-20
-21
-20
-2
RMS
. The results are in
2
2
2
2
-21
-22
-21
-3
CS5460A
2
2
2
2
-22
-23
-22
-4
LSB
LSB
LSB
LSB
2
2
2
2
-23
-24
-23
-5
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