TDA19997HL

Description

The High-Definition Multimedia Interface (HDMI) switch enables connection of multiple DVI/HDMI inputs to a receiver with at least one input. The TDA19997HL is a switch with four HDMI 1.4 compliant DVI/HDMI inputs and one DVI/HDMI output. Each HDMI input has its own dedicated embedded EDID memory. A fifth DDC-bus input is available for VGA or second HDMI input of SoC. The built-in auto-adaptive equalizer improves signal quality, allowing the use of cable lengths up to 30 m.

Features

Complies with the HDMI 1.4, DVI 1.0, EIA/CEA-861D and HDCP 1.3 standards
Four independent DVI/HDMI inputs, up to 2.25 gigasamples per second
Pin compatible with TDA9996/TDA9995
Robust auto-adaptive equalizer (up to 20 m AWG26 at 2.25 Gbit/s)
Robust auto-adaptive equalizer (up to 30 m AWG24 at 1.5 Gbit/s)
Integrated 50 Ω single-ended termination resistors
+5 V signal detection for each HDMI input
Supports color depth processing at 24-bit, 30-bit or 36-bit per pixel
Supports all Data Island packets
Activity detection on each input, manages output activity and power consumption
Extended mode: re-generate output TMDS waveform removing jitter and skew
Frequency measurement allowing direct reading of format/resolution
Automatic mode for main features:
-Automatic Hot Plug Detect (HPD) generation and termination resistors management
-Automatic HPD generation with programmable duration
-Automatic EDID load
Display Data Channel (DDC) bus:
-5 V tolerant, DDC-bus inputs with bit rates up to 400 kbit/s
-One DDC-bus output with the same latency as the HDMI stream pipeline delay
-DDC-bus master switch functionality avoids bus corruption
-DDC-bus level-shifting buffer with digital lock-up protection
-A fifth DDC-bus input available for VGA or second HDMI input of SoC

Application

HDTV (plasma, Rear projection TV and LCD TV)
YCbCr or RGB Hi-Speed video digitizer
Projector
Home theater
AVR
Switch box