CDB5461AU Cirrus Logic Inc, CDB5461AU Datasheet - Page 6

• Manufacturer Part Number: CDB5461AU
• Description: Eval Bd Sngl Phase Power/Energy
• Manufacturer: Cirrus Logic Inc

Specifications of CDB5461AU

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: CS5461A
• Primary Attributes: 1-Phase, Energy-to-Frequency Output
• Secondary Attributes: GUI, USB, SPI, Microwire Interfaces
• Processor To Be Evaluated: CS5461A, C8051F320
• Interface Type: USB
• Operating Supply Voltage: 5 V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant
• Other names: 598-1552

2. PIN DESCRIPTION
6
Clock Generator
Crystal Out
Crystal In
CPU Clock Output
Control Pins and Serial Data I/O
Serial Clock Input
Serial Data Output
Chip Select
Mode Select
High Frequency Energy
Output
Reset
Interrupt
Energy Output
Serial Data Input
Analog Inputs/Outputs
Differential Voltage Inputs
Differential Current Inputs
Voltage Reference Output
Voltage Reference Input
Power Supply Connections
Positive Digital Supply
Digital Ground
Positive Analog Supply
Analog Ground
Power Fail Monitor
Voltage Reference Output
Differential Voltage Input
Differential Voltage Input
Voltage Reference Input
Positive Digital Supply
CPU Clock Output
Serial Data Ouput
Digital Ground
Mode Select
Serial Clock
Chip Select
Crystal Out
21,22
15,16
1,24
9,10
18
19
20
23
12
14
13
1
11
2
5
6
7
8
3
4
7
VREFOUT
XOUT, XIN - The output and input of an inverting amplifier. Oscillation occurs when connected to
a crystal, providing an on-chip system clock. Alternatively, an external clock can be supplied to
the XIN pin to provide the system clock for the device.
CPUCLK - Output of on-chip oscillator which can drive one standard CMOS load.
SCLK - A Schmitt Trigger input pin. Clocks data from the SDI pin into the receive buffer and out of
the transmit buffer onto the SDO pin when CS is low.
SDO -Serial port data output pin.SDO is forced into a high impedance state when CS is high.
CS - Low, activates the serial port interface.
MODE - High, enables the “auto-boot” mode. The mode pin is pulled low by an internal resistor.
E3
in system calibration.
RESET - A Schmitt Trigger input pin. Low activates Reset, all internal registers (some of which
drive output pins) are set to their default states.
INT - Low, indicates that an enabled event has occurred.
E1,
the measured energy is negative.
SDI - Serial port data input pin. Data will be input at a rate determined by SCLK.
VIN+, VIN- - Differential analog input pins for the voltage channel.
IIN+, IIN- - Differential analog input pins for the current channel.
VREFOUT - The on-chip voltage reference output. The voltage reference has a nominal magni-
tude of 2.5 V and is referenced to the AGND pin on the converter.
VREFIN - The input to this pin establishes the voltage reference for the on-chip modulator.
VD+ - The positive digital supply.
DGND - Digital Ground.
VA+ - The positive analog supply.
AGND - Analog ground.
PFMON - The power fail monitor pin monitors the analog supply. If PFMON’s voltage threshold is
not met, a Low-Supply Detect (LSD) bit is set in the status register.
CPUCLK
VREFIN
MODE
- Active low pulses with an output frequency proportional to the active power. Used to assist
DGND
XOUT
SCLK
E2 - Active low pulses with an output frequency proportional to the active power. Indicates if
VIN+
SDO
VIN-
VD+
CS
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
XIN
SDI
E2
E1
INT
RESET
E3
PFMON
IIN+
IIN-
VA+
AGND
Crystal In
Serial Data Input
Energy Output 2
Energy Output 1
Interrupt
Reset
High Frequency Energy Output
Power Fail Monitor
Differential Current Input
Differential Current Input
Positive Analog Supply
Analog Ground
CS5461A
DS661F2