AD5764 데이터 시트보기 (PDF) - Analog Devices
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AD5764 Datasheet PDF : 27 Pages
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Preliminary Technical Data
Table 8. AD5744/64 Input Register Format
MSB
LSB
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
R/W
0
REG2 REG1 REG0 A2
A1
A0
DATA
Table 9. Input Register Bit Functions
R/W
REG2, REG1, REG0
A2, A1, A0
D15 – D0
Indicates a read from or a write to the addressed register.
Used in association with the address bits to determine if a read or write operation is to the data register, offset
register, gain register, or function register.
REG2
0
0
0
1
1
REG1
0
1
1
0
0
REG0
0
0
1
0
1
Function
Function Register
Data Register
Coarse Gain Register
Fine Gain Register
Offset Register
These bits are used to decode the DAC channels
A2
A1
A0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
Data Bits
Channel Address
DAC A
DAC B
DAC C
DAC D
ALL DACs
FUNCTION REGISTER
The Function Register is addressed by setting the three REG bits to 000. The values written to the address bits and the data bits determine
the function addressed. The Functions available through the function register are shown in Table 10 and
Table 11.
Table 10. Function Register Options
REG2 REG1 REG0 A2 A1 A0 DB15 .. DB6
0
0
0
00 0
0
0
0
0 0 1 Don’t Care
0
0
0
10 0
0
0
0
10 1
DB5
Local-
Ground-
Offset Adjust
DB4
DB3
NOP, Data = Don’t Care
D1
Direction
D1 Value
DB2
D0
Direction
CLR, Data = Don’t Care
LOAD, Data = Don’t Care
DB1
D0
Value
DB0
SDO
Disable
Rev. PrA 15-Nov-04| Page 19 of 27
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