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GS1500-CQR 데이터시트(PDF) 4 Page - Gennum Corporation |
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GS1500-CQR 데이터시트(HTML) 4 Page - Gennum Corporation |
4 / 17 page GENNUM CORPORATION 522 - 33 - 00 4 PIN DESCRIPTIONS NUMBER SYMBOL TIMING TYPE DESCRIPTION 1 PCLK_IN Synchronous wrt PCLK_IN Input Input Clock. The device uses PCLK_IN for clocking the input data stream into DATA_IN[19:0]. This clock is generated by the GS1545 or GS1540. 2, 4, 14, 19, 24, 37, 46, 50, 58, 69, 79, 82, 91, 94, 110, 116, 128 GND GND Ground power supply connections. 3, 20, 25, 38, 47, 51, 59, 68, 78, 81, 90, 93, 109, 115, 127 VDD Power Positive power supply connections. 5F_E/S Non- synchronous Input Control Signal Input. Used to control where the FIFO_L signal is generated. When F_E/S is high, the GS1500 generates FIFO_L signal at EAV. When F_E/S is low, the GS1500 generates FIFO_L signal at SAV. See Fig. 4 for timing information. 6MUTE Synchronous wrt PCLK_IN Input Control Signal Input. Used to enable or disable blanking of the LUMA (DATA_OUT[19:10]) and CHROMA (DATA_OUT[9:0]). When MUTE is low, the device sets the accompanying LUMA and CHROMA data to their appropriate blanking levels. When MUTE is high, the LUMA and CHROMA data streams pass through this stage of the device unaltered. 7FW_EN/DIS Non- synchronous Input Control Signal Input. Used to enable or disable the internal flywheel. When FW_EN/DIS is high, the internal flywheel is enabled. When FW_EN/DIS is low, the internal fly-wheel is disabled. 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 BP_FR Non- synchronous Input Control Signal Input. Used to enable or disable word boundary framing. When BP_FR is low, internal framing is enabled. When BP_FR is high, internal framing is bypassed. 10 BP_DSC Non- synchronous Input Control Signal Input. Used to enable or disable the SMPTE 292M descrambler. When BP_DSC is low, the internal SMPTE 292M de- scrambler is enabled. When BP_DSC is high, the internal SMPTE 292M de-scrambler is bypassed. 11 WB_NI Non- synchronous Input Control Signal Input. Used to enable or disable noise immune operation of the word boundary framer. When WB_NI is high, noise- immune word boundary alignment is enabled. The device switches to a new word boundary only when it has detected two consecutive identical new TRS positions. When WB_NI is low, the device re- aligns the word boundary position at every instance of a TRS. 12 TRS_Y/C Non- synchronous Input Control Signal Input. Used to control whether LUMA or CHROMA TRS ID's are detected and used. When TRS_Y/C is high, the device detects and uses TRS signals embedded in the LUMA channel. When TRS_Y/C is low, the device detects and uses TRS signals embedded in the CHROMA channel. |
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