- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373971 > AD9953 (Analog Devices, Inc.) 400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer PDF資料下載
參數(shù)資料
| 型號： | AD9953 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | XO, clock |
| 英文描述： | 400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer |
| 中文描述： | 400 MSPS的14位，1.8V CMOS的直接數(shù)字頻率合成器 |
| 文件頁數(shù)： | 40/42頁 |
| 文件大?。?/td> | 473K |
| 代理商： | AD9953 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁當(dāng)前第40頁第41頁第42頁
PRELIMINARY TECHNICAL DATA
operation is complete. All data written to (read from) the AD9953 must be (will be) in MSB first
order. If the LSB mode is active, the serial port controller will generate the least significant byte
address first followed by the next greater significant byte addresses until the IO operation is
complete. All data written to (read from) the AD9953 must be (will be) in LSB first order.
Example Operation
To write the Amplitude Scale Factor register in MSB first format apply an instruction byte of 02h
(serial address is 00010(b)). From this instruction, the internal controller will generate an internal
byte address of 07h (see the register map) for the first data byte written and an internal address of
08h for the next byte written. Since the Amplitude Scale Factor register is two bytes wide, this
ends the communication cycle.
To write the Amplitude Scale Factor register in LSB first format apply an instruction byte of 40h.
From this instruction, the internal controller will generate an internal byte address of 07h (see the
register map) for the first data byte written and an internal address of 08h for the next byte written.
Since the Amplitude Scale Factor register is two bytes wide, this ends the communication cycle.
AD9953
RAM I/O Via Serial Port
Accessing the RAM via the serial port is identical to any other serial IO operation except that the
number of bytes transferred is determined by the address space between the beginning address and
the final address as specified in the current RAM Segment Control Word (RSCW). The final
address describes the most significant word address for all IO transfers and the beginning address
specifies the least significant address.
RAM I/O supports MSB/LSB first operation. When in MSB first mode, the first data byte will be
for the most significant byte of the memory address described by the final address with the
remaining three bytes making up the lesser significant bytes of that address. The remaining bytes
come in most significant to least significant, destined for RAM addresses generated in descending
order until the final four bytes are written into the address specified as the beginning address.
When in LSB first mode, the first data byte will be for the least significant byte of the memory
(specified by the beginning address) with the remaining three bytes making up the greater
significant bytes of that address. The remaining bytes come in least significant to most significant,
destined for RAM addresses generated in ascending order until the final four bytes are written into
the memory address described by the final address. Of course, the bit order for all bytes is least
significant to most significant first when in the LSB first bit is set. When the LSB first bit is
cleared (default) the bit order for all bytes is most significant to least significant.
The RAM uses serial address 01011(b), so the instruction byte to write the RAM is 0Bh, in MSB
first notation. As mentioned above, the RAM addresses generated are specified by the beginning
and final address of the RSCW currently selected by the Profile<1:0> pins.
REV. PrB 1/30/03
Page 40
Analog Devices, Inc.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD9953ASV | 400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer |
| AD9953PCB | 400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer |
| AD9954 | 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer |
| AD9954YSV | 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer |
| AD9954YSV-REEL7 | 400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD9953/PCB | 制造商:Analog Devices 功能描述:400 MSPS, 14BIT DGTL SYNTHESIZER - Bulk |
| AD9953ASV | 制造商:AD 制造商全稱:Analog Devices 功能描述:400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer |
| AD9953PCB | 制造商:AD 制造商全稱:Analog Devices 功能描述:400 MSPS 14-Bit, 1.8V CMOS Direct Digital Synthesizer |
| AD9953YSV | 制造商:Analog Devices 功能描述:Direct Digital Synthesizer 400MHz 1-DAC 14-Bit Serial 48-Pin TQFP EP 制造商:Rochester Electronics LLC 功能描述:AD9953 400 MSPS DDS W/ 14 BIT DAC - Bulk 制造商:Analog Devices 功能描述:IC DDS 400MSPS SMD 9953 TQFP48 |
| AD9953YSV-REEL7 | 制造商:Analog Devices 功能描述:Direct Digital Synthesizer 400MHz 1-DAC 14-Bit Serial 48-Pin TQFP EP T/R |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。