ST GM60028H User Manual

GM60028H

DisplayPort transmitter

Data Brief

Features

■ DisplayPort™ 1.1a compliant transmitter

■ HDCP 1.3 support

■ DisplayPort link comprising four main lanes

and one auxiliary channel

■ Output bandwidth sufficient to transmit AV

streams up to WQXGA or Full HD@120 Hz along with multi-channel 24-bit audio streams @192 kHz sampling rate

■ 60-bit LVTTL input configurable as single port

or dual port with single pixel per clock or two pixels per clock

■ RGB or YCbCr input color format

RGB / YCbCr 4:4:4 - 1x60, 1x48, 1x30, 1x24 YCbCr 4:2:2 - 1x24, 1x20, 1x16

■ Color space conversion from RGB to YUV and

from YUV to RGB

TTL Video

TTL Inputs

Image

Capture

■ I2S (8 channel) or SPDIF audio input ports

compliant with IEC60958 and IEC61937 formats

■ I2C host interface

■ General purpose inputs/outputs

(Total of 28)

■ Energy Spectrum Management® (ESM®)

■ Package: 160-pin PQFP

Applications

■ Interface for the digital transmission of secure,

high-bandwidth, uncompressed audio-visual streams in TV and PC applications

■ Applications that require high bandwidth and

long reach cables, such as projectors

Format

Conversion

DisplayPort Transmitter

DP Output

I2S/SPDIF Audio

I2S/SPDIF

Receiver

I2C Slave

Clock Generation OCM, SPI GPIO I2C Master

Format

Conversion

November 2008 Rev 1 1/7

For further information contact your local STMicroelectronics sales office.

www.st.com

Description GM60028H

1 Description

The GM60028H is a DisplayPort transmitter IC designed for the transmission of secure, high-bandwidth, uncompressed digital audio-video content for next-generation TV, projector, and PC display systems. It has a single link DisplayPort output comprising four main lanes and one auxiliary channel. The total available link bandwidth is 10.8 Gbps, which is suitable for transmission of high resolution digital video and audio content. The DisplayPort link bandwidth supported by GM60028H can transmit full HD video (1080p 30-bit color per pixel) @ 120 Hz or support 2560 x 1600 @ 60 Hz graphics, along with corresponding audio streams. Unlike conventional display interfaces, DisplayPort link bandwidth can be freely traded between video resolution, refresh rate, and pixel bit depth. The auxiliary channel is a 1 Mbps bidirectional, half-duplex interface dedicated for link and device management.

The GM60028H supports RGB and YUV video color formats with a color depth of 12 (YUV 4:2:2 only), 10, and 8 bits. The GM60028H also supports both compressed and uncompressed audio formats. The 60-bit LVTTL input ports on GM60028H can be mapped to receive video data streams either in two pixels per clock or single pixel per clock of chosen color depth. The audio signal is connected through multi-channel I2S or SPDIF ports. The received video signal is mapped onto DisplayPort main link, along with corresponding audio signal. The GM60028H supports HDCP 1.3 content protection scheme (HDCP 1.3) for secure transmission of digital audio-video content.

The GM60028H can be configured by an external Host through the I2C host interface. This device also includes general purpose inputs/outputs that can be used for controlling system components. The GM60028H features color space converter (RGB to YUV and YUV to RGB) and sample structure converter (4:4:4 to 4:2:2 and 4:2:2 to 4:4:4) for flexible interface with external video processing devices.

Figure 1. System diagram

SPI

TTL (60)

I2S/SPDIF

Flash

SPI

GM60028H

Crystal

DisplayPort

GPIO

2/7

I2C

GM60028H Benefits

2 Benefits

● Proven interoperability with all major DisplayPort vendors

● HDCP 1.3 support

● On-chip Microprocessor enables stand-alone operation for customized applications

● Flexible interface to ease system design – DP 1, 2, 4 lane configuration, 60/48/30/24

TTL port, YUV/RGB color format

● Low EMI

● Low power

3/7

+ 4 hidden pages