参数资料
| 型号： | AD9949KCPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 18/36页 |
| 文件大小： | 0K |
| 描述： | IC CCD SIGNAL PROCESSOR 40-LFCSP |
| 标准包装： | 1 |
| 类型： | CCD 信号处理器，12 位 |
| 输入类型： | 逻辑 |
| 输出类型： | 逻辑 |
| 接口： | 3 线串口 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 40-LFCSP |
| 包装： | 托盘 |
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AD9949
Rev. B | Page 25 of 36
POWER-UP PROCEDURE
RECOMMENDED POWER-UP SEQUENCE
When the AD9949 is powered up, the following sequence is
recommended (refer to Figure 27 for each step):
1.
Turn on the power supplies for the AD9949.
2.
Apply the master clock input, CLI, VD, and HD.
3.
Although the AD9949 contains an on-chip, power-on reset,
a software reset of the internal registers is recommended.
Write a 1 to the SW_RST register (Address 0×10), which
resets the internal registers to their default values. This bit
is self-clearing and automatically resets back to 0.
4.
The Precision Timing core must be reset by writing a 0 to
the TGCORE_RSTB register (Address 0×12) followed by
writing a l to the TGCORE_RSTB register. This starts the
internal timing core operation.
5.
Write a 1 to the PREVENTUPDATE register (Address
0×14). This prevents the updating of the serial register
data.
6.
Write to the desired registers to configure high speed
timing and horizontal timing.
7.
Write a 1 to the OUT_CONTROL register (Address 0×11).
This allows the outputs to become active after the next
VD/HD rising edge.
8.
Write a 0 to the PREVENTUPDATE register (Address
0×14). This allows the serial information to be updated at
next VD/HD falling edge.
9.
The next VD/HD falling edge allows register updates to
occur, including OUT_CONTROL, which enables all clock
outputs.
VDD
(INPUT)
SERIAL
WRITES
VD
(OUTPUT)
1H
ODD FIELD
EVEN FIELD
...
DIGITAL
OUTPUTS
CLOCKS ACTIVE WHEN OUT_CONTROL REGISTER IS
UPDATED AT VD/HD EDGE
H1/H3, RG
H2/H4
tPWR
CLI
(INPUT)
HD
(OUTPUT)
1V
...
03751-028
1
2
3
4
5
6
7
8
9
Figure 27. Recommended Power-Up Sequence
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| AD9951YSVZ | IC DDS DAC 14BIT 1.8V 48-TQFP |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD9949KCPZRL | 功能描述:IC CCD SIGNAL PROCESSOR 40-LFCSP RoHS:是 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| AD9950KJ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Parallel-Input Frequency Synthesizer |
| AD9950TJ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Parallel-Input Frequency Synthesizer |
| AD9951 | 制造商:AD 制造商全称:Analog Devices 功能描述:400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer |
| AD9951/PCBZ | 制造商:Analog Devices 功能描述:AD9951 400 MSPS DDS W/ 14 BIT DAC EVALBD - Boxed Product (Development Kits) |
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