SDA9220-5 Datasheet | Siemens Semiconductor Group

Features Large area flicker elimination through field doubling Additional elimination of interline flicker in field mode Field switching and selection in field mode Noise and cross-color reduction Stills 9-image display, still-in-picture, picture-in-still with different frame versions q Zoom with selection of enlarged picture segment (8 x 12 positions) q Pin-programmable operation without standard conversion q q q q q q MOS IC P-LCC-44-1 Type SDA 9220-5 Functional Description Ordering Code Q67100-H5087 Package P-LCC-44-1 (SMD) The MSC III is a ponent of the TV-SAM Featurebox and is responsible for driving the picture memory devices (TV-SAMs) and generating sync signals (figure 6). Together with the other devices of the Featurebox it enhances picture quality and offers a number of special operating modes. The MSC III is set via the I2C Bus, it being possible to switch the I2C Bus address by hardware so that implementation of a simple frame Featurebox is possible in conjunction with the signal MUX supplied by the MSC III. Other major output signals of the SDA 9220-5, in addition to the clocks LL3X (13.5 MHz) and LL1.5X (27 MHz), are the memory-driving signals (RA, RB, WT, RE, SCAD, SCA) and the sync signal CSY for the teletext device. The horizontal sync signals (HS2, BLN2) and the vertical sync signals (VS1, VS2) are also generated. Semiconductor Group SDA 9220-5 Circuit Description The MSC III can be divided into the following function blocks (figure 6): - - - - Sync-signal generator Memory controller Clock generator I2C Bus receiver The sync-signal generator uses signals VS and BLN to produce the horizontal and vertical sync signals BLN2, HS2, VS1 and VS2. It supplies the posite sync signal CSY for the 100-Hz teletext, the control signal MUX for implementing a simple frame Featurebox and the frame signal FRM for inserting a colored frame in multi-picture, still-in-picture and picture-in-still modes. Signal CFH is output to prevent the bottom...