CM2031 Просмотр технического описания (PDF) - ON Semiconductor

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CM2031

HDMI Receiver Port Protection and Interface Device

ON Semiconductor 

CM2031

termination, thus reducing ringing and overshoot in entertainment systems connected to legacy or poorly

designed CEC nodes.

The CM2031’s bi-directional slew rate limiting is integrated into the CEC level-shifter functionality thus allowing

the designer to directly interface a simple low voltage CMOS GPIO directly to the CEC bus and simultaneously

guarantee meeting all CEC output logic levels and HDMI slew-rate and isolation specifications (See Figure 5).

CEC

CEC I/F

µP

CM2031

Figure 5. Integrated CM2031 Solution

The CM2031 also includes an internal backdrive protected static pullup 120µA current source from the

CE_SUPPLY rail in addition to the dynamic slew rate control circuitry.

Figure 6 shows a typical shaped CM2031 CEC output (bottom) against a ringing uncontrolled discrete solution

(top).

Figure 6. CM2031 CEC Output

Rev. 5 | Page 7 of 18 | www.onsemi.com

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