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| 型号： | XRD98L62EVAL |
| 厂商： | Exar Corporation |
| 文件页数： | 21/37页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD XRD98L62 |
| 标准包装： | 1 |
| 系列： | * |
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XRD98L62
28
Rev. P2.00
Preliminary
Figure 17. Pixel Rate Clock Timing with RSTreject=1
CCD Signal
SBLK
SPIX
ADCLK
Reset Reject
Switches Turn OFF
Video
Level
φ3
Black
Level
Aperture delays
One of the most difficult tasks in designing a digital
camera is optimizing the pixel timing for the CCD, CDS
and ADC. We have included the programmable aper-
ture delay function to help simplify this job.
There are two serial interface registers, DelayA &
DelayB, used to program the aperture delays. Each
register is divided into 3 delay parameters. Each delay
parameter is 3 bits wide. Each delay parameter can be
set to add from 0ns to 7ns of delay.
The delays are added to the clock signals after the
polarity control. This means the definition of leading
edge and trailing edge depends on the polarity control
bit for each clock. For the default case, SBLKpol=0 &
SPIXpol=0, the leading edge is the falling edge and the
trailing edge is the rising edge.
DelayA[2:0] controls the delay added to the leading
edge of SBLK.
This positions the falling edge of
internal signal
φ1.
DelayA[5:3] controls the delay added to the trailing
edge of SBLK. This positions the rising edge of
internal signal
φ1.
DelayB[2:0] controls the delay added to the leading
edge of
φ2. This positions the falling edge of internal
signal
φ2.
DelayB[5:3] controls the delay added to the trailing
edge of SPIX. This positions the rising edge of
internal signal
φ2.
DelayB[8:6] is only used when SPIXopt=0. It controls
the delay from the trailing edge of SBLK to the start
of the internal
φ2 control. This delay is in addition to
DelayA[5:3], the SBLK trailing edge delay.
DelayA[8:6] controls the delay added to ADCLK. This
is a simple delay, it adds the same delay to both the
rising and falling edges of ADCLK to create
φ4.
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相关代理商/技术参数 |
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| XRD98L62ZEVAL | 功能描述:数据转换 IC 开发工具 Eval Board (Solder) XRD98L62AIV RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| XRD98L63 | 制造商:EXAR 制造商全称:EXAR 功能描述:CCD Image Digitizers with CDS, PGA and 12-Bit A/D |
| XRD98L63AIV | 制造商:EXAR 制造商全称:EXAR 功能描述:CCD Image Digitizers with CDS, PGA and 12-Bit A/D |
| XRD98L63AIV-F | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| XRD98L63AIVTR-F | 制造商:Exar Corporation 功能描述:AFE General Purpose 1ADC 12-Bit 3V 48-Pin TQFP T/R 制造商:Exar Corporation 功能描述:XRD98L63AIVTR-F |
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