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GS1532 データシート(PDF) 7 Page - Gennum Corporation |
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GS1532 データシート(HTML) 7 Page - Gennum Corporation |
7 / 52 page GS1532 Data Sheet 21498 - 6 June 2005 7 of 52 13 IOPROC_EN/DIS Non Synchronous Input CONTROL SIGNAL INPUT Signal levels are LVCMOS/LVTTL compatible. Used to enable or disable I/O processing features. When set HIGH, the following I/O processing features of the device are enabled: • EDH Packet Generation and Insertion (SD-only) • SMPTE 352M Packet Generation and Insertion • ANC Data Checksum Calculation and Insertion • Line-based CRC Generation and Insertion (HD-only) • Line Number Generation and Insertion (HD-only) • TRS Generation and Insertion • Illegal Code Remapping To enable a subset of these features, keep IOPROC_EN/DIS HIGH and disable the individual feature(s) in the IOPROC_DISABLE register accessible via the host interface. When set LOW, the I/O processing features of the device are disabled, regardless of whether the features are enabled in the IOPROC_DISABLE register. 18 SMPTE_BYPASS Non Synchronous Input CONTROL SIGNAL INPUT Signal levels are LVCMOS/LVTTL compatible. When set HIGH in conjunction with DVB_ASI = LOW, the device will be configured to operate in SMPTE mode. All I/O processing features may be enabled in this mode. When set LOW, the device will not support the scrambling or encoding of received SMPTE data. No I/O processing features will be available. 19 RSET Analog Input Used to set the serial digital output signal amplitude. Connect to CD_VDD through 281 Ω +/- 1% for 800mVp-p single-ended output swing. 20 CD_VDD – Power Power supply connection for the serial digital cable driver. Connect to +1.8V DC analog. 21 SDO_EN/DIS Non Synchronous Input CONTROL SIGNAL INPUT Signal levels are LVCMOS/LVTTL compatible. Used to enable or disable the serial digital output stage. When set LOW, the serial digital output signals SDO and SDO are disabled and become high impedance. When set HIGH, the serial digital output signals SDO and SDO are enabled. 22 CD_GND – Power Ground connection for the serial digital cable driver. Connect to analog GND. 23, 24 SDO, SDO Analog Output Serial digital output signal operating at 1.485Gb/s, 1.485/1.001Gb/s, or 270Mb/s. The slew rate of these outputs is automatically controlled to meet SMPTE 292M and 259M specifications according to the setting of the SD/HD pin. Table 1-1: Pin Descriptions (Continued) Pin Number Name Timing Type Description |
同様の部品番号 - GS1532 |
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同様の説明 - GS1532 |
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