Issue X-1
CM2031
HDMI Receiver Port Protection and Interface Device
Features
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HDMI 1.3 compliant
Supports thin dielectric and 2-layer boards
Minimizes TMDS skew with 0.05pF matching
Long HDMI cable support with integrated I
2
C
accelerator
Active termination and slew rate limiting for CEC
Supports direct connection to CEC microcontroller
Integrated I
2
C level shifting to CMOS level
including low logic level voltages
Integrated 8kV ESD protection and backdrive
protection on all external I/O lines
Supports active and passive control of hot plug
detect signal
Multiport I
2
C support eliminates need for analog
mux on DDC lines
Simplified layout with matched 0.5mm trace
spacing
Product Description
The CM2031 HDMI Receiver Port Protection and
Interface Device is specifically designed for next
generation HDMI Sink interface protection.
An integrated package provides all ESD, slew rate
limiting on CEC line, level shifting/isolation and
backdrive protection for an HDMI port in a single 38
Pin TSSOP package.
The CM2031 part is specifically designed to provide
the designer with the most reliable path to HDMI 1.3
CTS compliance.
Applications
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PC and consumer electronics
Digital TV, PC monitors and projectors
Electrical Schematic
5V_SUPPLY
TMDS_D2+
TMDS_GND
TMDS_D2
TMDS_D1+
TMDS_GND
TMDS_D1
TMDS_D0+
TMDS_GND
TMDS_D0
TMDS_CK+
TMDS_GND
TMDS_CK
5V_SUPPLY
LV_SUPPLY
5V_SUPPLY
LV_SUPPLY
DYNAMIC
PULLUP
DDC_CLK_OUT
DDC_DAT_IN
DYNAMIC
PULLUP
DDC_DAT_OUT
DDC_CLK_IN
CMOS/I2C
LEVEL SHIFT
CMOS/I2C
LEVEL SHIFT
5V_SUPPLY
CE_SUPPLY
HOTPLUG_DET_IN
CE_SUPPLY
1kΩ
HOTPLUG_DET_OUT
CE_REMOTE_IN
ACTIVE SLEW
RATE
LIMITING
CE_REMOTE_OUT
© 2007 California Micro Devices Corp. All rights reserved.
07/10/07
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
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Tel: 408.263.3214
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Fax: 408.263.7846
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www.cmd.com
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CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
