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| 型號(hào)： | EVAL-AD5522EBDZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 46/64頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR 14X14MM AD5522 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 主要目的： | 測試與測量，參數(shù)測量單元（PMU） |
| 已用 IC / 零件： | AD5522 |
| 已供物品： | 板 |
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AD5522
Data Sheet
Rev. E | Page 50 of 64
WRITE DAC REGISTER
The DAC input, gain, and offset registers are addressed through
a combination of PMU bits (Bit 27 to Bit 24) and mode bits
(Bit 23 and Bit 22). Bit A5 to Bit A0 address each DAC level on
chip. Bit D15 to Bit D0 are the DAC data bits used when writing
to these registers. The PMU address bits allow addressing of a
particular DAC for any combination of PMU channels.
Table 27. DAC Register Bits
B28
B27
B26
B25
B24
B23
B22
B21
B20
B19
B18
B17
B16
B15 to B0
RD/WR
PMU3
PMU2
PMU1
PMU0
MODE1
MODE0
A5
A4
A3
A2
A1
A0
Data Bits[D15 (MSB):D0 (LSB)]
Table 28. DAC Register Functions
Bit
Bit Name
Description
28 (MSB)
RD/WR
When this bit is low, a write function takes place to the selected register; setting the RD/WR bit high initiates a
readback sequence of the PMU, alarm status, comparator status, system control, or DAC register, as determined
by the address bits.
27
PMU3
Bit PMU3 to Bit PMU0 address each PMU and DAC channel in the device. These bits allow control of each
individual DAC channel or any combination of channels, in addition to multichannel programming.
26
PMU2
25
PMU1
24
PMU0
23
MODE1
The MODE1 and MODE0 bits allow addressing of the DAC gain (M), offset (C), or input (X1) register.
22
MODE0
MODE1
MODE0
Action
0
Write to the system control register or the PMU register
0
1
Write to the DAC gain (M) register
1
0
Write to the DAC offset (C) register
1
Write to the DAC input data (X1) register
DAC Register-Specific Bits
21
A5
DAC address bits. The A5 to A3 bits select the register set that is addressed. See the DAC Addressing section.
20
A4
19
A3
18
A2
DAC address bits. The A2 to A0 bits select the DAC that is addressed. See the DAC Addressing section.
17
A1
16
A0
15 to 0
D15 (MSB) to
D0 (LSB)
16 DAC data bits for X1 and C registers. M register is 15 bits wide, D15 to D1.
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