The ADV7480 is a combined HDMI®/MHL® receiver targeted at
connectivity enabled head units requiring a wired, uncompressed
digital audio/video link from smartphones and other consumer
electronics devices to support streaming and integration of
cloud-based multimedia content and applications into an
automotive infotainment system.
The ADV7480 MHL 2.1 capable receiver supports a maximum
pixel clock frequency of 75 MHz, allowing resolutions up to
720p/1080i at 60 Hz in 24-bit mode. The ADV7480 features a
link control bus (CBUS) that handles the link layer, translation
layer, CBUS electrical discovery, and display data channel
(DDC) commands. The implementation of the MHL sideband
channel (MSC) commands by the system processor can be
handled either by the I2C bus, or via a dedicated serial
peripheral interface (SPI) bus. A dedicated interrupt pin
(INTRQ3) is available to indicate that events related to CBUS
The ADV7480 also features an enable pin (VBUS_EN) to
dynamically enable or disable the output of a voltage regulator,
which provides a 5 V voltage bus (VBUS) signal to the MHL
The ADV7480 HDMI capable receiver supports a maximum
pixel clock frequency of 162 MHz, allowing HDTV formats up
to 1080p, and display resolutions up to UXGA (1600 × 1200 at
60 Hz). The device integrates a consumer electronics control
(CEC) controller that supports the capability discovery and
control (CDC) feature. The HDMI input port has dedicated 5 V
detect and Hot Plug™ assert pins.
The HDMI/MHL receiver includes an adaptive transition
minimized differential signaling (TMDS) equalizer that ensures
robust operation of the interface with long cables.
The ADV7480 single receiver port is capable of accepting both
HDMI and MHL electrical signals. Automatic detection
between HDMI and MHL is achieved by using cable impedance
detection through the CD_SENSE pin.
The ADV7480 contains a component processor (CP) that
processes the video signals from the HDMI/MHL receiver. It
provides features such as contrast, brightness, and saturation
adjustments, as well as free run and timing adjustment controls
for HS/VS/DE timing.
The ADV7480 features an 8-bit digital input/output port,
supporting input and output video resolutions up to 720p/1080i
in both the 8-bit interleaved 4:2:2 SDR and DDR modes.
To enable glueless interfacing of these video input sources to the
latest generation of infotainment system on chips (SoCs), the
ADV7480 features a MIPI® CSI-2 transmitter. The four-lane
transmitter provides four data lanes, two data lanes, and one
data lane muxing options, and can be used to output video from
the HDMI receiver, the MHL receiver, and the digital input
The ADV7480 offers a flexible audio output port for audio data
extracted from the MHL or HDMI streams. The HDMI/MHL
receiver has advanced audio functionality, such as a mute
controller that prevents audible extraneous noise in the audio
output. Additionally, the ADV7480 can be set to output time
division multiplexing (TDM) serial audio, which allows the
transmission of eight multiplexed serial audio channels on a
single audio output interface port.
The ADV7480 is programmed via a 2-wire, serial, bidirectional
port (I2C compatible).
Fabricated in an advanced CMOS process, the ADV7480 is
available in a 9 mm × 9 mm, RoHS-compliant, 100-ball
CSP_BGA package and is specified over the −40°C to +85°C
The ADV7480 is offered in automotive and industrial versions.
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