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FIN24A Datenblatt(PDF) 9 Page - Fairchild Semiconductor |
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FIN24A Datenblatt(HTML) 9 Page - Fairchild Semiconductor |
9 / 20 page Preliminary 9 www.fairchildsemi.com Application Mode Diagrams (Continued) FIGURE 9. Unidirectional Serializer and Deserializer FIGURE 10. Multiple Units, Unidirectional Signals in Each Direction Figure 10 shows a half duplex connectivity diagram. This connectivity allows for two unidirectional data streams to be sent across a single pair of SerDes devices. Data will be sent on a frame by frame basis. For this mode of operation to work there needs to be some synchronization between when the Camera sends its data frame and when the LCD sends its data. One option for this is to have the LCD send data during the camera blanking period. External logic may need to be provided in order for this mode of operation to work. Devices will alternate frames of data controlled by a direc- tion control and a direction sense. When DIRI, on the right- hand FIN24A is HIGH, data will be sent from the Camera to the Camera interface at the base. When DIRI, on the right- hand FIN24A goes LOW data will be sent from the base- band process to the LCD. The direction is then changed at DIRO on the right-hand FIN24A indicating to the left-hand FIN24A to change direction. Data will be sent from the Base LCD Unit to the LCD. The DIRO pin on the left-hand FIN24A is used to indicate to the base control unit that the signals are changing direction and the LCD is now avail- able to be sent data. DIRI on the right-hand FIN24A could typically use a timing reference signal such as VSYNC from the camera interface to indicate direction change. A derivative of this signal may be required in order to make sure that no data is lost on the final data transfer. |
Ähnliche Teilenummer - FIN24A |
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Ähnliche Beschreibung - FIN24A |
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