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Low Power HDMI/DVI Transmitter ADV7525
FEATURES
General Low power HDMI/DVI transmitter ideal for portable applications CEC controller and expanded message buffer (3 messages) reduce system overhead HDMI v.1.4a features supported 3D video Extended colorimetry Compatible with DVI v.1.0 Optional embedded HDCP keys to support HDCP 1.3 1.8 V supplies for ultralow operating power Video/audio inputs accept logic levels from 1.8 V to 3.3 V Digital video 80 MHz operation supports all video and graphics resolutions from 480i to 1080i Programmable 2-way color space converter Supports RGB, YCbCr, DDR Supports ITU656-based embedded syncs Automatic input video format timing detection (CEA-861E) Digital audio Supports standard SPDIF for stereo LPCM or compressed audio up to 192 kHz 8-channel uncompressed LPCM I2S audio up to 192 kHz Special features for easy system design On-chip MPU with I2C master to perform EDID reading and HDCP operations; reports HDMI events through interrupts and registers 5 V tolerant I2C and HPD I/Os, no extra device needed No audio master clock needed for supporting SPDIF and I2S Compatible with AD9394 HDMI companion chip 5 V generator for Hot Plug detect in portable applications
FUNCTIONAL BLOCK DIAGRAM
SCL SDA INT
I2C SLAVE
HDCP CORE
HDCP AND EDID MICROCONTROLLER
HPD
REGISTER CONFIGURATION LOGIC CLK VSYNC HSYNC DE D[23:0] SPDIF MCLK I2S[3:0] LRCLK SCLK AUDIO DATA CAPTURE VIDEO DATA CAPTURE
HDCP KEYS
I2C MASTER CEC CONTROLLER BUFFER-3MSG
DDCSCL DDCSDA CEC CEC_CLK
SYNC ADJUSTMENT AND GENERATION Tx0 COLOR SPACE CONVERSION Tx1 TMDS OUTPUTS Tx2
ADV7525
Figure 1.
TxC
GENERAL DESCRIPTION
The ADV7525 is an 80 MHz, high definition multimedia interface (HDMI(R)) transmitter with expanded CEC buffer. It supports HDTV formats up to 1080i and computer graphic resolutions up to XGA at 75 Hz. With the inclusion of embedded HDCP keys, the ADV7525 allows the secure transmission of protected content, as specified by the HDCP 1.3 protocol. The ADV7525 supports both SPDIF and 8-channel I2S audio. Its high fidelity 8-channel I2S can transmit stereo up to a 192 kHz sampling rate. The SPDIF can carry stereo LPCM audio or compressed audio, including Dolby(R) Digital and DTS(R). The ADV7525 helps to reduce system design complexity and cost by incorporating such features as an I2C master for EDID reading and 5 V tolerance on the I2C and Hot PlugTM detect pins. Fabricated in an advanced CMOS process, the ADV7525 is available in a space-saving, 64-ball, WLCSP surface-mount package. This package is RoHS compliant and specified to operate from -25C to +85C
APPLICATIONS
Cellular handsets Digital video cameras Digital still cameras Personal media players Gaming DVD players and recorders Digital set-top boxes HDMI repeater
For more information on the ADV7525, contact Analog Devices, Inc., at ATV_VideoTx_Apps@analog.com.
Rev. Sp0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 (c)2010 Analog Devices, Inc. All rights reserved.
09409-001
ADV7525 NOTES
I2C refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors). HDMI, the HDMI Logo, and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries.
(c)2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D09409F-0-10/10(Sp0)
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