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參數(shù)資料
| 型號(hào)： | EVAL-AD5934EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 250 kSPS, 12-Bit Impedance Converter, Network Analyzer |
| 中文描述： | 250 kSPS的，12位阻抗轉(zhuǎn)換器，網(wǎng)絡(luò)分析儀 |
| 文件頁(yè)數(shù)： | 19/32頁(yè) |
| 文件大?。?/td> | 335K |
| 代理商： | EVAL-AD5934EB |
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AD5934
REGISTER MAP
Table 7.
Register Name
CONTROL
START FREQUENCY
FREQUENCY INCREMENT
NUMBER OF INCREMENTS
NUMBER OF SETTLING TIME CYCLES
STATUS
REAL DATA
IMAGINARY DATA
Rev. 0 | Page 19 of 32
Register Address
80 h
81 h
82 h
83 h
84 h
85 h
86 h
87 h
88 h
89 h
8A h
8B h
8F h
94 h
95 h
96 h
97 h
Register Data
D15 to D8
D7 to D0
D23 to D16
D15 to D8
D7 to D0
D23 to D16
D15 to D8
D7 to D0
D15 to D8
D7 to D0
D15 to D8
D7 to D0
D7 to D0
D15 to D8
D7 to D0
D15 to D8
D7 to D0
Read/Write Register
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read Only
Read Only
Read Only
Read Only
Read Only
CONTROL REGISTER
Table 8. 16-Bit Register
80 h
81 h
D15 to D8
D7 to D0
Read or Write
Read or Write
The CONTROL register is a 16-bit register that sets the AD5934
control modes. The 4 MSBs of the CONTROL register are
decoded to provide control functions, such as performing a
frequency sweep, powering down the part, and various other
control functions defined in the CONTROL register map.
The user may choose to write only to Register Location 80 h
and not to alter the contents of 81 h. Note that the CONTROL
register should not be written to as part of a Block Write
command. The CONTROL register also allows the user to
program the excitation voltage and set the system clock. A
Reset command to the CONTROL register does not reset any
programmed values associated with the sweep (that is, Start
frequency, number of increments, frequency increment). After
a Reset command, an
Initialize with Start Frequency
command
must be issued to the CONTROL register to restart the
frequency sweep sequence (see Figure 28).
Default value upon reset: D15 to D0 reset to A0 00H upon
power-up. The AD5934 contains a 16-bit control register
(Address 80h and 81h) that sets the AD5934 control modes.
Table 9. Control Register Map
Bit
D15
D14
0
0
0
0
D13
0
0
D12
0
1
No operation
Initialize with Start
Frequency
Start Frequency Sweep
Increment Frequency
Repeat Frequency
No operation
No operation
Power down mode
Standby mode
No operation
No operation
No operation
Output voltage range
Range 1 ( 2.0 V p-p typ)
Range 3 (200 mV p-p typ)
Range 4 (400 mV p-p typ)
Range 2 (1.0 V p-p typ)
PGA gain 0 = ×5, 1 = ×1
Reserved. Set to 0.
Reserved. Set to 0.
Reserved. Set to 0.
Reset
External System clock.
Must be set to 1.
Must be Set to 0.
Reserved. Set to 0.
Reserved. Set to 0.
D11
D8
D7
D6
D5
D4
D3
0
0
0
1
1
1
1
1
1
0
0
1
0
0
0
0
1
1
D10
0
0
1
1
1
1
1
0
0
0
1
1
0
0
D9
0
1
0
1
0
1
0
0
1
0
1
0
1
D2
D1
D0
0
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