CDB5461AU Cirrus Logic Inc, CDB5461AU Datasheet - Page 38

• 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

8. AUTO-BOOT MODE USING E
When the CS5461A MODE pin is asserted (logic 1), the
CS5461A auto-boot mode is enabled. In auto-boot
mode, the CS5461A downloads the required com-
mands and register data from an external serial
E
energy measurements.
8.1 Auto-Boot Configuration
A typical auto-boot serial connection between the
CS5461A and a E
auto-boot mode, the CS5461A’s CS and SCLK are con-
figured as outputs. The CS5461A asserts CS, provides
a clock on SCLK, and sends a read command to the
E
fied commands and register data presented on the SDI
pin. The E
CS5461A to change the designated registers’ default
values and begin registering energy.
Figure 14 also shows the external connections that
would be made to a calibrator device, such as a PC or
custom calibration board. When the metering system is
installed, the calibrator would be used to control calibra-
tion and/or to program user-specified commands and
calibration values into the E
commands/data will determine the CS5461A’s exact
38
Figure 14. Typical Interface of E
2
2
PROM, allowing the CS5461A to begin performing
PROM on SDO. The CS5461A reads the user-speci-
5 K
VD+
2
MODE
PROM’s programmed data is utilized by the
CS5461A
2
PROM is illustrated in
EOUT1
EOUT2
SCLK
SDO
SDI
CS
Connector to Calibrator
2
PROM. The user-specified
Mech. Counter
Stepper Motor
5 K
or
2
PROM to CS5461A
SCK
SO
SI
CS
Figure
EEPROM
2
PROM
14. In
operation, when the auto-boot initialization sequence is
running. Any of the valid commands can be used.
8.2 Auto-Boot Data for E
Below is an example code set for an auto-boot se-
quence. This code is written into the E
er. The serial data for such a sequence is shown below
in single-byte, hexidecimal notation:
8.3 Suggested E
Several industry-standard, serial E
successfully run auto-boot with the CS5461A are listed
below:
•
•
•
These types of serial E
command (00000011) in order to perform a memory
read. The CS5461A has been hardware programmed to
transmit this 8-bit command to the E
ginning of the auto-boot sequence.
- 40 00 00 61
- 44 7F C4 A9
- 48 FF B2 53
- 4C 00 7D 00
- 74 00 00 04
- E8
- 78 00 01 00
Atmel AT25010, AT25020 or AT25040
National Semiconductor NM25C040M8 or NM25020M8
Xicor X25040SI
Write Configuration Register, turn high-pass filters
on, set K=1.
Write value of 0x7FC4A9 to Current Gain
Register.
Write value of 0xFFB253 to Voltage Gain
Register.
Set PulseRateE
Unmask bit #2 (LSD) in the Mask Register).
Start continuous conversions
Write STOP bit to Control Register, to terminate
auto-boot initialization sequence.
1,2
2
PROM Devices
2
PROMs expect a specific 8-bit
Register to 1000 Hz.
2
PROM
2
2
2
PROMs that will
PROM at the be-
PROM by the us-
CS5461A
DS661F2