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GS1511 Datasheet(PDF) 4 Page - Gennum Corporation |
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GS1511 Datasheet(HTML) 4 Page - Gennum Corporation |
4 / 9 page GENNUM CORPORATION 52248 - 5 4 of 9 1.2 PIN DESCRIPTIONS PIN NUMBER NAME TIMING TYPE DESCRIPTION 1 PCLK_IN Synchronous Input Parallel Data Clock input. 74.25MHz or 74.25/1.001MHz. 2, 4, 14, 19, 24, 37, 46, 50, 58, 69, 79, 82, 91, 94, 110, 116, 128 GND N/A Ground Ground. Ground power supply connections. 3, 20, 25, 38, 47, 51, 59, 68, 78, 81, 90, 93, 99, 102, 109, 115, 127 VDD N/A Power Power. Positive power supply connections. 5 DET_TRS Non- synchronous Input Control Signal Input. Used to enable or disable the detection of the TRS signals embedded in the video stream. When DET _TRS is high, the device detects the TRS signals embedded in the input video stream and uses the detected HVF signals instead of the external HVF signals. When DET _TRS is low, TRS detection is disabled. The device uses the external supplied HVF signals. 6BLANK Synchronous wrt PCLK_IN Input Control Signal Input. When BLANK is low, the device sets the accompanying LUMA and CHROMA data to their appropriate blanking levels. When BLANK is high, the LUMA and CHROMA data streams pass through this stage of the device unaltered. See timing diagram Figure 3. 7, 17, 95 GND N/A Ground. This pin must be connected to GND for normal operation. 8 CODE_PROTECT Non- synchronous Input Control Signal Input. Used to enable or disable re-mapping of out-of-range words contained in the active portion of the video signal. When this signal is high, the device re-maps out-of- range words contained within the active portion of the video signal into CCIR-601 compliant words. Values between 000-003 are re-mapped to 004. Values between 3FC and 3FF are re- mapped to 3FB. When this signal is low, out-of-range words in the active video region pass through the device unaltered. 9 RSTLN Synchronous wrt PCLK_IN Input Control Signal Input. Line number reset signal which must be asserted once per frame at the beginning of the frame (for example, on the falling edge of the F signal). A high to low transition will reset the line number counter of the device to one (1). See Figure 2 for timing. 10 BP_SC Non- synchronous Input Control Signal Input. Used to enable or bypass the SMPTE292M scrambler and NRZ(I) encoder. When BP_SC is low, the video stream is scrambled according to SMPTE 292M and NRZ(I) encoded. When BP_SC is high, the scrambler and NRZ(I) encoder are by-passed. 11 SRST Non- synchronous Input Control Signal Input. Used to reset the SMPTE292M scrambler and NRZI encoder. When SRST is low, the scrambler and encoder operate normally. A low to high transition on SRST causes the scrambler and encoder to reset. 12 TRS_Y/C Non- synchronous Input Control Signal Input. Only used when DET_TRS is high. When TRS_Y/C is high, the device detects and uses TRS signals embedded in the LUMA (DATA_IN[19:10]) channel. When TRS_Y/C is low, the device detects and uses TRS signals embedded in the CHROMA (DATA_IN[9:0]) channel. |
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Descripción similar - GS1511 |
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