AD8197-EVAL Analog Devices, AD8197-EVAL Datasheet - Page 24

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AD8197-EVAL

Manufacturer Part Number
AD8197-EVAL
Description
4:1 HDMI/DVI Switch with Equalization
Manufacturer
Analog Devices
Datasheet
AD8197
RECEIVER SETTINGS REGISTER
High speed (TMDS) channels input termination is fixed to on
when using the parallel interface.
INPUT TERMINATION PULSE REGISTER 1 AND
REGISTER 2
High speed input (TMDS) channels pulse-on-source switching
fixed to off when using the parallel interface.
RECEIVE EQUALIZER REGISTER 1 AND REGISTER 2
PP_EQ: High Speed (TMDS) Inputs Equalization Level
Select Bit (For All TMDS Input Channels)
The input equalization cannot be set individually (per channel)
when using the parallel interface; one equalization setting
affects all input channels.
Table 28. PP_EQ Description
PP_EQ
0
1
Description
Low equalization (6 dB)
High equalization (12 dB)
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TRANSMITTER SETTINGS REGISTER
PP_PE[1:0]: High Speed (TMDS) Output Pre-Emphasis
Level Select Bus (For All TMDS Channels)
Table 29. PP_PE[1:0] Description
PP_PE[1:0]
00
01
10
11
PP_OTO: High Speed (TMDS) Output Termination On/Off
Select Bit (For All TMDS Channels)
Table 30. PP_OTO Description
PP_OTO
0
1
PP_OCL: High Speed (TMDS) Output Current Level Select
Bit (For All TMDS Channels)
Table 31. TX_OCL Description
PP_OCL
0
1
Description
Output current set to 10 mA
Output current set to 20 mA
Preliminary Technical Data
Description
No pre-emphasis (0 dB)
Low pre-emphasis (2 dB)
Medium pre-emphasis (4 dB)
High pre-emphasis (6 dB)
Description
Output termination off
Output termination on

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