AD8197 Analog Devices, AD8197 Datasheet - Page 24

• Manufacturer Part Number: AD8197
• Description: 4:1 HDMI/DVI Switch with Equalization
• Manufacturer: Analog Devices

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