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M306V2EEFS датащи(PDF) 190 Page - Renesas Technology Corp |
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M306V2EEFS датащи(HTML) 190 Page - Renesas Technology Corp |
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190 / 271 page ![]() Rev.1.40 Oct 06, 2004 page 190 of 269 M306V2ME-XXXFP, M306V2EEFP 2.16.4 Clock for OSD As a clock for display to be used for OSD, it is possible to select one of the following 3 types. • Data slicer clock output from the data slicer (approximately 26 MHz) • Clock from the LC oscillator supplied from the pins OSC1 and OSC2 • Clock from the ceramic resonator (or the quartz-crystal oscillator) from the pins OSC1 and OSC2 Figure 2.16.15 Clock control register Figure 2.16.16 Block Diagram of OSD selection circuit Clock selection bit 0: Data slicer clock 1: OSC1 clock Reserved bit OSC1 oscillating mode selection bits 0 0: Stopped 0 1: Do not set. 1 0: LC oscillating mode 1 1: Ceramic • quartz-crystal oscillating mode b2 b1 b7 b6 b5 b4 b3 b2 b1 b0 Bit name Function Clock control register Bit symbol Symbol Address When reset CS 020516 0016 R W CS0 CS1 Must always be set to “0” 0 0 0 CS2 Reserved bits Must always be set to “0” R', G', B' signal output control bit 0: R', G', B' output invalid 1: R', G', B' output valid CS4 0 Data slicer circuit Data slicer clock OSC1 clock LC Ceramic • quartz-crystal Oscillating mode for OSD CS2, CS1 OSD control circuit CS0 (See note) Note : To use data slicer clock, set bit 0 of data slicer control register 1 to “1.” “10” “11” “0” “1” |
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