AD8197AASTZ View Datasheet(PDF) - Analog Devices

Part Name

Description

MFG CO.

AD8197AASTZ

4:1 HDMI/DVI Switch with Equalization

Analog Devices 

AD8197A

RECEIVE EQUALIZER REGISTER 1 AND REGISTER 2

RX_EQ[x]: High Speed (TMDS) Input X Equalization Level

Select Bit

Table 13. RX_EQ[x] Description

RX_EQ[x]

Description

0

Low equalization (6 dB)

1

High equalization (12 dB)

Table 14. RX_EQ[x] Mapping

RX_EQ[x] Corresponding Input TMDS Channel

Bit 0

B0

Bit 1

B1

Bit 2

B2

Bit 3

B3

Bit 4

A0

Bit 5

A1

Bit 6

A2

Bit 7

A3

Bit 8

C3

Bit 9

C2

Bit 10

C1

Bit 11

C0

Bit 12

D3

Bit 13

D2

Bit 14

D1

Bit 15

D0

TRANSMITTER SETTINGS REGISTER

TX_PE[1:0]: High Speed (TMDS) Output Pre-Emphasis

Level Select Bus (For All TMDS Channels)

Table 15. TX_PE[1:0] Description

TX_PE[1:0] Description

00

No pre-emphasis (0 dB)

01

Low pre-emphasis (2 dB)

10

Medium pre-emphasis (4 dB)

11

High pre-emphasis (6 dB)

TX_PTO: High Speed (TMDS) Output Termination On/Off

Select Bit (For All Channels)

Table 16. TX_PTO Description

TX_PTO

Description

0

Output termination off

1

Output termination on

TX_OCL: High Speed (TMDS) Output Current Level Select

Bit (For All Channels)

Table 17. TX_OCL Description

TX_OCL

Description

0

Output current set to 10 mA

1

Output current set to 20 mA

Rev. 0 | Page 20 of 28

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