LT8641UXE HDMI2.0 4进1出4K60Hz方案介绍

1. Features 
 HDMI2.0 Receiver
 Compliant with HDMI2.0b, HDMI1.4 and DVI1.0
 Compliant with HDCP2.3, HDCP2.2 and HDCP1.4
 Data rate up to 6Gbps
 Support up to 4Kx2K@60Hz
 Adaptive receiver equalization
 AC and DC couple capable
 Support 3D and HDR
 Support 8/10/12-bit color depth
 Support TMDS descrambling for EMI/RFI reduction
 Support SCDC and CEC2.0
 Support ARC
 Integrated EDID shadow
 5V tolerance DDC/HPD I/Os
 HDMI2.0 Transmitter
 Compliant with HDMI2.0b, HDMI1.4 and DVI1.0
 Compliant with HDCP2.3, HDCP2.2 and HDCP1.4
 Data rate up to 6Gbps
 Support up to 4Kx2K@60Hz
 Programmable transmitter swing and pre-emphasis
 Support channel swap(arbitrarily) and polarity 
inversion(independent)
 DC couple capable
 Downstream receiver sensing
 Support 3D and HDR
 Support 8/10/12-bit color depth
 Support TMDS scrambling for EMI/RFI reduction
 Support SCDC and CEC2.0
 Support ARC
 5V tolerance DDC/HPD I/Os
 Digital Audio Output
 Up to four I2S interface supporting 8-channel audio, with 
sample rates of 32~192 kHz and sample sizes of 16~24 
bits
 SPDIF interface supporting PCM, Dolby Digital, DTS 
digital audio at up to 192kHz frame rate
 IEC60958 or IEC61937 compatible
 Miscellaneous
 Internal rterm calibration
 External crystal supports 25MHz
 Integrated microprocessor
 Integrated SPI master for embedded SPI flash
 Embedded SPI flash for firmware and HDCP keys
 Integrated 100/400kHz I2C slave for debug and firmware 
update
 1.2V core power supply & 3.3V I/O power supply
 -40°C to +85°C ambient operating temperature range
 128-pin 14x14mm QFN package
2. General Description 
The LT8641UXE HDMI2.0/1.4 Switch features a 4:1 switch 
compliant with HDMI2.0/1.4 specification, max 6Gbps high 
speed data rate, adaptive equalization RX input and pre emphasized TX output to support long cable application.
LT8641UXE HDMI2.0/1.4 Switch automatically detects the 
cable loss, and adaptively optimize the equalization setting. 
It supports