GS2972 3Gb/s, HD, SD SDI Transmitter Key Features Applications Operation at 2.97Gb/s, 2.97/1.001Gb/s, 1.485Gb/s, 1.485/1.001Gb/s and 270Mb/s Application: 1080p 50/60 Camera/Camcorder AES - IN Supports SMPTE 425M (Level A and Level B), SMPTE MIC AUDIO 1/ 2 Audio Clocks AUDIO 3/4 Audio ADC Processor 424M, SMPTE 292M, SMPTE 259M-C and DVB-ASI Integrated Cable Driver 20-bit 3G-SDI GS2972 Video CCD HVF/PCLK Processor Integrated low noise VCO OPTICS CTRL/TIMECODE Integrated ClockCleaner Integrated audio embedder for up to 8 channels of Storage: Tape/Disc/Solid State 48kHz audio Ancillary data insertion Optional conversion from SMPTE 425M Level A to Application: Dual Link (HD-SDI) Level B for 1080p 50/60 4:2:2 10-bit to Single Link (3G-SDI) Converter Parallel data bus selectable as either 20-bit or 10-bit HD-SDI 10-bit Link A HD-SDI 10-bit Deserializer FIFO SMPTE video processing including TRS calculation and (GS1559 or HVF/PCLK GS2970) 3G-SDI WR insertion, line number calculation and insertion, line HVF/PCLK GS2972 HD-SDI 10-bit based CRC calculation and insertion, illegal code Link B HD-SDI 10-bit Deserializer FIFO re-mapping, SMPTE 352M payload identifier (GS1559 or HVF/PCLK GS2970) WR generation and insertion GSPI Host Interface GS4910 HVF 1.2V digital core power supply, 1.2V and 3.3V analog XTAL power supplies, and selectable 1.8V or 3.3V I/O power supply Application: Multi-format Audio Embedded Module -20C to +85C operating temperature range 10-bit Low power operation (typically 405mW including SD /HD/3G-SDI GS2970 PCLK Cable Driver) HVF Small 11mm x 11mm 100-ball BGA package Audio Clocks GS2972 SD/HD/3G-SDI GS4911 Pb-free and ROHS compliant AUDIO 1/ 2 AES AUDIO 3/ 4 Audio AUDIO 5/ 6 SRC Inputs AUDIO 7/ 8 Switch Logic & Buffers Analog ADC Audio Inputs GS2972 3Gb/s, HD, SD SDI Transmitter 1 of 4 www.gennum.com Product Brief 44723 - E June 2008 XTALTRS words, calculate and insert line numbers and line based Application: Multi-format Digital VTR/Video Server CRCs, re-map illegal code words, map 8-bit TRS to 10-bit V ideo Inputs TRS, calculate and insert EDH CRCs and flags, and insert SMPTE 352M payload identifier packets. All of the 20-bit Video Processor processing features are optional, and may be disabled via HVF/PCLK Storage: external control pins and/or via the Host Interface. Tape/HDD/Solid State AUDIO 1/ 2 3G-SDI GS2972 AUDIO 3/ 4 AUDIO 5/ 6 Audio The GS2972 provides ancillary data insertion in SMPTE Processor AUDIO 7/ 8 Audio Clocks mode as well. The entire ancillary packet is programmed into internal registers through the GSPI Host Interface, Sync Analog GS4911 Audio Inputs Seperator Sync including the Ancillary Data Flag (ADF), Data Identification XTAL words (DID and SDID) and checksum. The GS2972 then recalculates the checksum and inserts the complete Application: 3Gb/s SDI Test Signal Generator ancillary packet into the video stream. Memory The user may present the parallel data as either SMPTE XTAL Analog 20-bit Sync 425M Level B or Level A. If the parallel data is presented as Video Sync HVF/PCLK GS4911 Signal HVF/PCLK Seperator Generator 3G-SDI Level A, it may be processed and serialized as Level A or GS2972 AES 1/2 converted to Level B (conversion only available for 1080p AES 3/4 Audio Clocks Audio AES 5/6 Generator 50/60 4:2:2 10-bit). If the parallel data is presented as Level AES 7/8 B then the serial data will also be Level B. In DVB-ASI mode, the device will perform 8b/10b encoding Application: Multi-format Presentation Switcher prior to transmission. (Output Stage) In Data-Through mode, all SMPTE and DVB-ASI processing Program AE S In P rogram AE S Out P reset AE S In Audio P review AE S Out Voice-Over Mixer is disabled, and the device can be used as a simple parallel I2S Audio + Clocks SD/HD/3G-SDI AE S from Input Dem ux Auxiliary 10-bit + Clk to serial converter. GS2972 SD/HD/3G-SDI Preview The device can also be placed in a lower power Standby 20-bit + Clk GS2972 Logo mode. In this mode, no signal is generated at the output. DVE Mixers Key & Fill SD/HD/3G-SDI Keyer Inserter 20-bit + Clk Keyer Program GS2972 Parallel data inputs must be provided in 20-bit or 10-bit Key/Fill Image Inputs Store multiplexed format for 3Gb/s, HD and SD video rates. For Analog 1080p 50/60 4:2:2 10-bit video formats, the video data can Sync Sync Clock & GS4911 Seperator Sync Distribution be presented at the parallel bus with Y on 10 bits and Cb/Cr XTAL on the other 10 bits. As such, this parallel bus can interface directly with video processor ICs. For all other format described in SMPTE 425M, the user must map the data to the Description 20-bit virtual interface as described in the standard. The The GS2972 is a complete SDI Transmitter, generating a device can accept both the 20-bit virtual interface directly, SMPTE 424M, SMPTE 292M, SMPTE 259M-C or DVB-ASI or the equivalent pre-multiplexed 10-bit format. The compliant Serial Digital Output signal. associated Parallel Clock input signal operates at 148.5 or The integrated ClockCleaner allows the device to accept 148.5/1.001MHz (for all 3Gb/s HD 10-bit multiplexed parallel clocks with greater than 300ps input jitter and still modes), 74.25 or 74.25/1.001MHz (for HD 20-bit mode), provide a SMPTE compliant Serial Digital Output. 27MHz (for SD 10-bit mode) and 13.5MHz (for SD 20-bit mode). The device can operate in four basic user-selectable modes: SMPTE mode, DVB-ASI mode, Data-Through mode, and Note: for 3Gb/s 10-bit mode the device operates in Dual Standby mode. Data Rate (DDR) mode, where the data is sampled at both the rising and falling edges of the clock. This reduces the I/O In SMPTE mode, the GS2972 performs SMPTE scrambling speed requirements of the downstream devices. and NRZ to NRZI coding. In addition, the device can insert 2 of 4 GS2972 3Gb/s, HD, SD SDI Transmitter Product Brief 44723 - E June 2008