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IT6623: 2:1 HDMI 1.4a 3D Transceiver with Audio In/Out

The IT6623 is HDMI 1.4a transceiver with a dual-port HDMI 1.4a receiver and a single-port HDMI1.4a Transmitter, can extract audio signals out to external audio processor and then feed the processed audio signals into IT6623 to renew audio bit stream which combine with video bit stream as the new AV bit stream, then output to HDMI Sink via the IT6623 transmitter. IT6623 is fully compatible with HDMI 1.3, compatible with HDMI 1.4a 3D and HDCP 1.4 and also backward compatible to DVI 1.0 specifications, with its Deep Color capability (up to 36-bit) ensures robust reception of high-quality uncompressed video content, along with state-of-the-art uncompressed and compressed digital audio content such as DTS-HD and Dolby TrueHD in digital televisions, DVD/HD-DVD/Bluray players. The IT6623 also supports all the primary 3D formats which are compliant with the HDMI 1.4a 3D specification

The IT6623 receives and provides up to 8 channels of I2S digital audio outputs, with sampling rate up to 192kHz and sample size up to 24 bits, facilitating direct connection to industry-standard low-cost audio DACs. Also, an S/PDIF output is provided to support up to compressed audio of 192kHz frame rate. Super Audio Compact Disc (SACD) is supported at up to 8 channels and 88.2kHz through DSD (Direct Stream Digital ports) ports.

The IT6623 also encodes and transmits up to 8 channels of I2S digital audio, with sampling rate up to 192kHz and sample size up to 24 bits. In addition, an S/PDIF input port takes in compressed audio of up to 192kHz frame rate, while Super Audio Compact Disc (SACD) is supported through dedicated DSD ports (Direct Stream Digital ports) at up to 88.2kHz one-bit audio. The newly supported High-Bit Rate (HBR) audio by HDMI Specifications v1.3 is provided by the IT6623 in two interfaces: with the four I2S input ports or the S/PDIF input port. With both interfaces the highest possible HBR frame rate is supported at up to 768kHz.

Each IT6623 comes preprogrammed with unique HDCP key, in compliance with the HDCP 1.4 standard so as to provide secure transmission of high-definition content. Users of the IT6623 need not purchase any HDCP keys or ROMs.

• HDMI 1.4a Transceiver: Dual-port HDMI 1.4a Receiver, Single-port HDMI 1.4a Transmitter
• Compliant with HDMI 1.3, HDMI 1.4a 3D, HDCP 1.4 and DVI 1.0 specifications
• Supporting link speeds of up to 2.25Gbps (link clock rate of 225MHz)
• Supporting all the primary 3D formats which are compliant with the HDMI 1.4a 3D specification.
• Supporting 3D video up to 1080P@50/59.95/60Hz, 1080P@23.98/24/29.97/30Hz, 1080i@50/59.94/60/Hz, 720P@23.98/24/29.97/30Hz, 720P@50/59.94/60Hz
• Supporting formats: Framing Packing, Side-by-Side ( half ), Top-and-Bottom.
• Bi-direction Color Space Conversion (CSC) between RGB and YCbCr color spaces with programmable coefficients.
• Up/down sampling between YCbCr 4:4:4 and YCbCr 4:2:2
• Dithering for conversion from 12-bit component to 10-bit/8-bit
• Digital audio output interface supporting
• up to four I2S interface supporting 8-channel audio, with sample rates of 32~192 kHz and sample sizes of 16~24 bits
• S/PDIF interface supporting PCM, Dolby Digital, DTS digital audio at up to 192kHz frame rate
• Optional support for 8-channel DSD audio up to 8 channels at 88.2kHz sample rate
• Support for high-bit-rate (HBR) audio such as DTS-HD and Dolby TrueHD through the four I2S interface or the S/PDIF interface, with frame rates as high as 768kHz
• automatic audio error detection for programmable soft mute, preventing annoying harsh output sound due to audio error or hot-unplug
• Auto-calibrated input termination impedance provides process-, voltage- and temperature-invariant matching to the input transmission lines.
• Integrated pre-programmed HDCP keys
• Intelligent, programmable power management
• Digital audio input interface supporting
• up to four I2S interface supporting 8-channel audio, with sample rates of 32~192 kHz and sample sizes of 16~24 bits
• S/PDIF interface supporting PCM, Dolby Digital, DTS digital audio at up to 192kHz frame rate
• Support for high-bit-rate (HBR) audio such as DTS-HD and Dolby TrueHD through the four I2S interface or the S/PDIF interface, with frame rates as high as 768kHz
• Support for 8-channel DSD audio through dedicated inputs
• Compatible with IEC 60958 and IEC 61937
• Audio down-sampling of 2X and 4X
• Software programmable, auto-calibrated TMDS source terminations provide for optimal source signal quality
• Software programmable HDMI output current level
• MCLK input is optional for audio operation. Users could opt to implement audio input interface with or without MCLK.
• Purely hardware HDCP engine increasing the robustness and security of HDCP operation
• Monitor detection through Hot Plug Detection and Receiver Termination Detection
• Embedded full-function pattern generator
• 128-pin LQFP (14mm x 14mm) package
• RoHS Compliant ( 100% Green available )