参数资料
| 型号： | EVAL-ADE7759EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 28/36页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR ADE7759 |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电度表/功率表 |
| 已用 IC / 零件： | ADE7759 |
| 已供物品： | 板 |
| 相关产品： | ADE7759ARSZRL-ND - IC ENERGY METERING 1PHASE 20SSOP ADE7759ARSZ-ND - IC ENERGY METERING 1PHASE 20SSOP |
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ADE7759
CHECKSUM REGISTER
The ADE7759 has a checksum register (CHKSUM[5:0]) to
ensure that the data bits received in the last serial read operation
Note that a read to the CHKSUM register will also generate a
checksum of the CHKSUM register itself.
are not corrupted. The 6-bit checksum register is reset before
the first bit (MSB of the register to be read) is put on the DOUT
DOUT
CONTENT OF REGISTER (n-bytes)
pin. During a serial read operation, when each data bit becomes
available on the rising edge of SCLK, the bit will be added to
the checksum register. In the end of the serial read operation,
+
+
CHECKSUM REGISTER ADDR: 1Eh
the content of the checksum register will be the sum of all the
ones contained in the register previously read. Using the checksum
Figure 47. Checksum Register for Serial Interface Read
register, the user can determine if an error has occurred during
the last read operation.
Table IV. Register List
Address
Name
R/W No. of Bits Default
Description
01h
WAVEFORM
R
24/40
0h
The Waveform Register is a read-only register. This register con-
tains the sampled waveform data from Channel 1, Channel 2, or the
active power signal. The data source and the length of the waveform
registers are selected by data bits 14 and 13 in the mode register—
see Channel 1 and 2 Sampling section.
02h
AENERGY
R
40
0h
Active Energy Register. Active power is accumulated (Integrated)
over time in this 40-bit, read-only register. The energy register
can hold a minimum of 11.53 seconds of active energy information
with full-scale analog inputs before it overflows—see Energy Calcu-
lation section.
03h
RSTENERGY R
40
0h
Same as the active energy register except that the register is reset to
0 following a read operation.
04h
STATUS
R
8
40h
Interrupt Status Register. This is an 8-bit read-only register. The
status register contains information regarding the source of
ADE7759 interrupts—see Interrupts section.
05h
RSTSTATUS
R
8
0h
Same as the interrupt status register except that the register con-
tents are reset to 0 (all flags cleared) after a read operation.
06h
MODE
R/W 16
000Ch
Mode Register. This is a 16-bit register through which most of
the ADE7759 functionality is accessed. Signal sample rates, filter
enabling, and calibration modes are selected by writing to this
register. The contents may be read at any time—see Mode Register
section.
07h
CFDEN
R/W 12
3Fh
CF Frequency Divider Denominator Register. The output fre-
quency on the CF pin is adjusted by writing to this 12-bit read/write
register—see Energy-to-Frequency Conversion section.
08h
CH1OS
R/W 8
80h
Channel 1 Offset Adjust. The MSB is used to enable the digital inte-
grator. Bit 6 is not used. Writing to Bits 0 to 5 allows offsets on
Channel 1 to be removed—see Analog Inputs section and CH1OS
Register section.
09h
CH2OS
R/W 6
0h
Channel 2 Offset Adjust. Writing to this 6-bit register allows any offsets
on Channel 2 to be removed—see Analog Inputs section.
0Ah
GAIN
R/W 8
0h
PGA Gain Adjust. This 8-bit register is used to adjust the gain selec-
tion for the PGA in Channel 1 and 2—see Analog Inputs section.
–28 –
REV. A
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