參數(shù)資料
型號(hào): AD9954YSV-REEL7
廠(chǎng)商: ANALOG DEVICES INC
元件分類(lèi): 數(shù)字信號(hào)處理外設(shè)
英文描述: 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
中文描述: DSP-NUM CONTROLLED OSCILLATOR, PQFP48
封裝: EXPOSED PAD, PLASTIC, MS-026-ABC, TQFP-48
文件頁(yè)數(shù): 17/36頁(yè)
文件大小: 1027K
代理商: AD9954YSV-REEL7
AD9954
Table 8. Register Map–When Linear Sweep Enable Bit Is True (CFR1<21> = 1).
Note that the RAM enable Bit CFR1<31> only activates the RAM itself not the RAM segment control words.
Rev. 0 | Page 17 of 36
Register
Name
(Serial
Address)
Bit Range
(MSB)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
External
Power-
Down
Mode
Clear
Freq
Accum.
Bit 2
Bit 1
(LSB)
Bit 0
Default
Value
OR
Profile
0x00
<7:0>
Digital
Power-
Down
Comp
Power-
Down
DAC
Power-
Down
Clock
Input
Power
Dwn
Enable
SINE
Output
CRYSTAL
OUT Pin
Active
SYNC_CLK
Out
Disable
Not
Used
<15:8>
Load SRR
@ I/O UD
AutoClr
Freq.
Accum
Software
Manual
Sync
RAM
Dest. Is
Phase
Word
AutoClr
Phase
Accum
Linear
Sweep
Enable
Clear
Phase
Accum.
SDIO
Input
Only
LSB First
0x00
<23:16>
Automatic
Sync
Enable
Not Used
Not
Used
Not Used
Not Used
Not
Used
0x00
Control
Function
Register No.
1 (CFR1)
(0x00)
<31:24>
RAM
Enable
Internal Profile Control <2:0>
Load ARR
@ I/O UD
Output
Shaped
Keying
Enable
Auto
Output
Shaped
Keying
0x00
<7:0>
REFCLK Multiplier
0x00 or 0x1 or 0x02 or 0x03: Bypass Multiplier
0x04 to 0x14: 4× to 20× Multiplication
VCO
Range
Charge Pump Current
<1:0>
0x00
<15:8>
Not Used
High
Speed
Sync
Enable
Hardware
Manual
Sync
Enable
CRYSTAL
OUT Pin
Active
Not
Used
0x00
Control
Function
Register No.
2 (CFR2)
(0x01)
<23:16>
<7:0>
(0x07)
Not Used
0x00
Amplitude Scale Factor Register <7:0>
Amplitude
Scale Factor
(ASF) (0x02)
<15:8>
Auto Ramp Rate
Speed Control <1:0>
Amplitude Scale Factor Register <13:8>
Amplitude
Ramp Rate
(ARR) (0x03)
Frequency
Tuning
Word
(FTW0)
(0x04)
Phase Offset
Word
(POW0)
(0x05)
Frequency
Tuning
Word
(FTW1)
(0x06)
Negative
Linear
Sweep
Control
Word
(NLSCW)
(0x07)
<7:0>
Amplitude Ramp Rate Register <7:0>
<7:0>
<15:8>
<23:16>
<31:24>
<7:0>
Frequency Tuning Word No. 0 <7:0>
Frequency Tuning Word No. 0 <15:8>
Frequency Tuning Word No. 0 <23:16>
Frequency Tuning Word No. 0 <31:24>
Phase Offset Word No. 0 <7:0>
0x00
0x00
0x00
0x00
0x00
0x00
<15:8>
Open<1:0>
Phase Offset Word No. 0 <13:8>
<7:0>
<15:8>
<23:16>
<31:24>
<7:0>
<15:8>
<23:16>
<31:24>
Frequency Tuning Word No. 1 <7:0>
Frequency Tuning Word No. 1 <15:8>
Frequency Tuning Word No. 1 <23:16>
Frequency Tuning Word No. 1 <31:24>
Falling Delta Frequency Tuning Word <7:0>
Falling Delta Frequency Tuning Word <15:8>
Falling Delta Frequency Tuning Word <23:16>
Falling Delta Frequency Tuning Word <31:24>
PS0 = 0
PS0 = 0
PS0 = 0
PS0 = 0
PS0 = 0
<39:32>
Falling Sweep Ramp Rate Word <7:0>
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