參數(shù)資料
型號(hào)： ADE7754ARRL
廠商： ANALOG DEVICES INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： ADE7754
中文描述： SPECIALTY ANALOG CIRCUIT, PDSO24
封裝： MS-013AD, SOIC-24
文件頁(yè)數(shù)： 34/44頁(yè)
文件大小： 630K
代理商： ADE7754ARRL
REV. PrG 01/03
PRELIMINARY TECHNICAL DATA
ADE7754
–
34
–
ACCESSING THE ADE7754 ON-CHIP REGISTERS
All ADE7754 functionality is accessed via the on-chip registers. Each register is accessed by first writing to the
communications register and then transferring the register data. For a full description of the serial interface protocol, see
Serial
Interface
section of this data sheet.
Communications Register
The Communications register is an eight bit, write-only register which controls the serial data transfer between the ADE7754
and the host processor. All data transfer operations must begin with a write to the communications register. The data written
to the communications register determines whether the next operation is a read or a write and which register is being accessed.
Table VII below outlines the bit designations for the Communications register.
Table VII : Communications Register
Bit
Location
Bit
Mnemonic
Description
0 to 5
A0 to A5
The six LSBs of the Communications register specify the register for the data transfer
operation. Table VIII lists the address of each ADE7754 on-chip register.
This bit is unused and should be set to zero.
When this bit is a logic one the data transfer operation immediately following the write to the
Communications register will be interpreted as a write to the ADE7754. When this bit is a logic
zero the data transfer operation immediately following the write to the Communications
register will be interpreted as a read operation.
6
7
RESERVED
W/
R
DB0
A0
W/R
A4
A3
A2
A1
0
DB1
DB2
DB3
DB4
DB5
A5
DB6
DB7
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