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参数资料
| 型号： | AD9512/PCBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 33/48页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR AD9512 |
| 设计资源： | AD9512 Eval Brd BOM AD9511/12 All Layers AD9511/12 Schematics AD9511/12 Gerber Files |
| 标准包装： | 1 |
| 主要目的： | 计时，时钟分配 |
| 已用 IC / 零件： | AD9512 |
| 已供物品： | 板 |
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AD9512
Rev. A | Page 39 of 48
REGISTER MAP DESCRIPTION
Table 18 lists the AD9512 control registers by hexadecimal address. A specific bit or range of bits within a register is indicated by angle
brackets. For example, <3> refers to Bit 3, while <5:2> refers to the range of bits from Bit 5 through Bit 2. Table 18 describes the
functionality of the control registers on a bit-by-bit basis. For a more concise (but less descriptive) table, see Table 17.
Table 18. AD9512 Register Descriptions
Reg.
Addr.
(Hex)
Bit(s)
Name
Description
Serial Control Port
Configuration
Any changes to this register takes effect immediately. Register 5Ah<0> Update Registers
does not have to be written.
00
<3:0>
Not Used.
00
<4>
Long Instruction
When this bit is set (1), the instruction phase is 16 bits. When clear (0), the instruction phase
is 8 bits. The default, and only, mode for this part is long instruction (Default = 1b).
00
<5>
Soft Reset
When this bit is set (1), the chip executes a soft reset, restoring default values to the internal
registers, except for this register, 00h. This bit is not self-clearing. A clear (0) has to be written
to it in order to clear it.
00
<6>
LSB First
When this bit is set (1), the input and output data is oriented as LSB first. Additionally, register
addressing increments. If this bit is clear (0), data is oriented as MSB first and register
addressing decrements. (Default = 0b, MSB first.)
00
<7>
SDO Inactive
(Bidirectional
Mode)
When set (1), the SDO pin is tri-state and all read data goes to the SDIO pin. When clear (0),
the SDO is active (unidirectional mode). (Default = 0b).
Not Used
01 to 33 <7:0>
Not Used.
Fine Delay Adjust
34
<0>
Delay Control
OUT4
Delay Block Control Bit.
Bypasses Delay Block and Powers It Down (Default = 1b).
34
<7:1>
Not Used.
35
<2:0>
Ramp Current
OUT4
The slowest ramp (200 μs) sets the longest full scale of approximately 10 ns.
<2>
<1>
<0>
Ramp Current (μs)
0
200
0
1
400
0
1
0
600
0
1
800
1
0
1000
1
0
1
1200
1
0
1400
1
1600
35
<5:3>
Ramp Capacitor
OUT4
Selects the Number of Capacitors in Ramp Generation Circuit.
More Capacitors => Slower Ramp.
<5>
<4>
<3>
Number of Capacitors
0
4 (Default)
0
1
3
0
1
0
3
0
1
2
1
0
3
1
0
1
2
1
0
2
1
35
<7:6>
Not Used.
36
<0>
Not Used.
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