PI3HDMI336 Datasheet, PDF (7/22 Pages) Pericom Semiconductor Corporation – 3:1 ActiveEye HDMI Switch with I2C Control & ARC Transmitter

PI3HDMI336
3:1 ActiveEye™ HDMI™ Switch with
I²C Control & ARC Transmitter
Byte 2
Bit Descriptions
Type
Power Up
Condition Logic Settings
7
TMDS AC swing for CML output
setting
6
TMDS AC swing for CML output
setting
R/W
R/W
0
b[7:6] = 00 500mV ^{*Note 1}
0
5
TMDS output pull-up resistor
Rout control
R/W
0 = Disconnect Rout pull-up to VDD, open drain output
0
1 = Connect Rout pull-up to VDD (3.3V), double termina-
tion output
4 Output squelch control
R/W
0 = Output squelch disable
1
1 = Output squelch enable ^{*Note 2, 3}
3
TMDS output pre-emphasis set-
ting
2
TMDS output pre-emphasis set-
ting
1 TMDS input equalization setting
0 TMDS input equalization setting
R/W
R/W
R/W
R/W
0
See OCx truth table
0
See OCx truth table
1
See EQx truth table
0
See EQx truth table
Note:
1. B2[7:6] : internal use only
2. Output squelch control is used to control TMDS D+/-[0:3], which are set to ‘high impedance /or pull-up to VDD by internal 50W resistor’ when Output squelch is
enable if there is no TMDS input signal. When squelch is disable, TMDS D+/-[0:3] will be unknown if there is no TMDS input signal.
3. squelch control is using CLK channel signal detection. When TMDS input clock frequency is low or swing is small, it will show no input signal.
Equalizer (EQx) Truth Table
TMDS data channel only. TMDS clock channels is 3db fixed
B2b[1]
0
0
1
1
B2b[0]
0
1
0
1
EQ value on TMDS data channels
3dB
6dB
12dB (default)
16dB
12-0237
7
www.pericom.com 07/28/2012