CDB5467U Cirrus Logic Inc, CDB5467U Datasheet - Page 19

• 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

5.2.5 Serial Interface
The CS5467 provides 5 pins, SCLK, SDI, SDO, CS, and
MODE for communication between a host microcontrol-
ler or serial E
MODE is an input that, when high, indicates to the
CS5467 that a serial E
a host microcontroller. It has a weak pull-down allowing
it to be left unconnected if microcontroller mode is used.
SCLK is used to shift and qualify serial data. Serial data
changes as a result of the falling edge of SCLK and is
valid during the rising edge. It is a Schmitt-trigger input
DS714F1
2
PROM and the CS5467.
2
PROM is being used instead of
for host microcontrollers, and a driven output for serial
E
SDI is the serial data input to the CS5467.
SDO is the serial data output from the CS5467. It’s out-
put drivers are disabled whenever CS is de-asserted, al-
lowing other devices to drive the SDO line.
CS is the chip select input for the serial bus. A high logic
level de-asserts it, tri-stating the SDO pin and clearing
the serial interface. A low logic level enables the serial
port. This pin may be tied low for systems not requiring
multiple SDO drivers. CS is a driven output when inter-
facing to serial E
2
PROMs.
2
PROMs.
CS5467
19