參數(shù)資料
型號(hào)： NS32FV100FV
廠商： National Semiconductor Corporation
英文描述： System Controller
中文描述： 系統(tǒng)控制器
文件頁(yè)數(shù)： 19/94頁(yè)
文件大?。?/td> 955K
代理商： NS32FV100FV
2.0 Architecture
(Continued)
2.4.2.1 Scanner Signals Generator Block
This block generates the timing control signals required by
CIS and CCD scanners. Scanners with line scan time of
2.5 ms, 5 ms, 10 ms or 20 ms are supported. This period is
derived from the TCU module’s time-slots (generated by the
TCU dividing each 20 ms into 256 time-slots).
The block generates the following signals:
D Scanner Period Pulse (SPP), an internal synchronization
pulse.
D Scanner Pixel Clock (SPCLK), an internal pixel clock (its
frequency is twice the scanner clock).
D Pixel clocks (two phasesDSCLK1 and SCLK2).
D Integrator Discharge Pulse (SDIS).
D Sample and Hold control clock (SNH). Used to sample
the scanner analog video signal.
D Scan Line Synchronization Pulse (SLS). Indicates the
beginning of a scan line.
D Scanner Comparator Preset, an internal initialization sig-
nal for the on-chip analog comparator.
D Active window, an internal time frame that controls the
operation of the bitmap generator.
D Peak Detector Window (SPDW). One of the Automatic
Background Control (ABC) control signals.
D Scanner interrupt pulse.
D Scanner motor interrupt pulse.
Each signal is generated by an independently programmed
waveform generator. The flexible waveform definition facili-
tates the support of different scanner models.
TL/EE/11331–11
FIGURE 2-6. Block Diagram of Scanner’s Signals Generator Block
19
相關(guān)PDF資料
PDF描述
NS32FV100-20 System Controller(系統(tǒng)控制器)
NS32FV100-25 System Controller(系統(tǒng)控制器)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NS32FV16 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:
NS32FV16-20 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Advanced Imaging/Communication Signal Processors
NS32FV16-25 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Advanced Imaging/Communication Signal Processors
NS32FX100 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:
NS32FX100-15 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:System Controller
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