PI3HDX412BD

3.4Gbps HDMI 1.4b 1:2 Splitter/Demux with Equalization & Pre-emphasis

7

www.pericom.com

03/24/14

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Functional Description

Squelch Mode:

Output Disable (Squelch) Mode uses TMDS Clock channel signal detection. When low voltage levels on the TMDS input clock

signals are detected, Squelch state enables and TMDS output port signals shall disable; when the TMDS clock input signal levels

are above a pre-determined threshold voltage, output ports shall return to the normal voltage swing levels.

When enable Squelch mode, input termination resistor will be enabled together. When Squelch is disabled through I2C register

programming RX_SET[1]="1" and no TMDS input signal condition, TMDS D[0:2]P/N will be undetermined status. In Squelch

state, TMDS output is high impedance state or TMDS output port shall 50 Ohm pull-up at source termination output.

Function Control Table

OE

MS

DR

SEL1

HDMI Outputs

0

x

x

x

All Port Disable

Pin Cotrol Mode

1

0

1

x

All Ports Enable

1

0

0

0

Enable Port 1

1

0

0

1

Enable Port 2

I2C Control Mode

1

1

x

x

I2C Programming Mode

14-0020