Features

• Enhanced DisplayPort™ (DP) receiver
– DP 1.1a compliant
– Embedded DisplayPort (eDP)
compliant
– 1, 2, or 4 lanes
• Higher bandwidth “Turbo mode” (3.24
Gbps per lane), supports:
– 1920 x 1080 (FHD) 120 Hz/10-bit color
video standard timings and 7.1 Ch audio
– 2560 x 1600 (WQXGA), 2560 x 2048
(QSXGA) 60 Hz/10-bit color graphics and
7.1 Ch audio
• Interface compatibility with wide range of
display controller ICs
– LVTTL (60 wide) and LVDS (quad
bus) video interface
– 8-Ch I2S and SPDIF audio interface
• Robust AUX channel
– Link service, maintenance
– I2C-over-AUX (MCCS, DDC)
– IR, full duplex UART protocol
• Configurable through I2C host interface
• Supports HDCP 1.3 with on-chip keys
• HDCP repeater capability
– Acts as upstream receiver
• AUX to I2C bridge for EDID, MCCS pass
through
• Spread spectrum on DisplayPort, LVDS, and
TTL interfaces for EMI reduction
• Supports deep color and color format
conversion
• Supports HBR/“Turbo” speed over HBR/RBRrated
long cables (15 m and more)
• Package
– 164 LFBGA (12 x 12 mm / 0.8 mm)
• Power supply voltages
– 3.3 V I/O; 1.2 V core

Applications

• Digital TV, LCD monitor, mobile display,
projector, etc

1. Description

The STDP4020 is a DisplayPort receiver IC for the reception of secure, high-bandwidth uncompressed
digital audio-video signals targeted for applications such as DTV, LCD monitor, projector, and other types of
display systems. STDP4020 is a VESA DP 1.1a and eDP compliant device, implementing a single link
DisplayPort input port comprising four main lanes, auxiliary channel, and HPD. In addition to the standard
HBR (2.7 Gbps) and RBR (1.62 Gbps) speeds, this device supports turbo speed of 3.24 Gbps per lane with
a total link bandwidth of 12.96 Gbps. The higher bandwidth provides unique benefits to users over other
commercial DP receivers for embedded applications by offering additional margin to support higher color
depth, resolution, and refresh rate. For example, STDP4020 supports FHD non- reduced blanking video
1080p 30-bit color per pixel) at 120 Hz, plus 7.1 Ch audio for two-box TV applications.The advanced
equalizer built in this device offers guaranteed performance over long reach cables. The auxiliary channel
in STDP4020 acts as a bidirectional communication link, supporting application-specific protocols such as
MCCS, DDC, UART, IR, as well as the dedicated DisplayPort link training and device management
functions.
The STDP4020 supports RGB and YUV video color formats with color depth of 12 (YUV 4:2:2 only), 10,
and 8 bits. This device offers LVDS and LVTTL output interfaces configurable to map a wide range of
display controller products. The Quad LVDS interface supports video signals up to 400 MHz pixel rate with
flexible channel and lane swapping options. The 60-bit LVTTL output ports can be mapped to transfer video
data either in two pixels per clock or single pixel per clock up to 330 MHz pixel rate, which opens up
possibilities for 3D applications. The STDP4020 also supports both compressed and uncompressed audio
formats. The extracted audio signal is transferred on a digital audio output bus. This device comprises four
I2S audio output, supporting up to 8 channel LPCM audio and a single wire S/PDIF output for encoded
audio. The STDP4020 features the HDCP 1.3 content protection scheme with an embedded key for secure
reception of digital audio-video content. In addition, it also supports the HDCP repeater function and, thus
acts as an upstream receiver suitable for two-box TV and HDMI/DVI converter applications.
The STDP4020 is configurable from an external host controller through I2C host interface. This IC also
includes general-purpose inputs/outputs for controlling system components. The STDP4020 features a
color space converter (RGB to YUV and YUV to RGB) for flexible interface with external video processing
devices.