SCL_CTL

SDA_CTL

I2C_EN

OE

DP159

HDMI_SEL/A1

DP SINK

GPO

EQ_SEL/A0

MASTER_SCL

MASTER_SDA

2K

3.3V

2K

3.3V

65K

3.3V

220nF

Introduction

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1

Introduction

The SNx5DP159 is a Dual Mode DisplayPort® (DP) to Transition Minimized Differential Signal (TMDS)

retimer supporting Digital Video Interface (DVI) and High Definition Multimedia Interface (HDMI). The

device supports datarates as high as 6 Gbps (HDMI 2.0).

The DP159 is typically used in DisplayPort++ to TMDS applications but can also be used in DisplayPort

applications. With its large amount of equalization gain to clean up inter-symbol interference (ISI), retimer

functionality to clean up input high frequency (SJ) and random jitter (RJ), the DP159 can also be used in a

DisplayPort application where microcontroller or FPGA can configure and manage the DP159. This

document details how to implement a DP159 in a DisplayPort application by putting DP159 in a special

mode called X-Mode. In X-Mode, the DP159 can support DisplayPort datarates up to 5.4Gbps (HBR2).

1.1

References

1. SNx5DP159 6 Gbps DP++ to HDMI Retimer (SLLSEJ2)

2. DP159 X-Mode Registers (SLLA359)

3. Total Phase Aardvark I2C/SPI Host Adapter

4. VESA DisplayPort Standard Version 1, Revision 2a. May 23, 2012

5. Xilinx DisplayPort v6.1 LogicCORE IP Product Guide, PG064 September 30, 2015

2

Local I

In a DisplayPort application, the DP159 local I

receivers (IN[3:0]P/N), and transmitters (OUT[3:0]P/N). The DP159 internal registers are accessed

through the SCL_CTL pin and SDA_CTL pin. The 7-bit I

the HDMI_SEL/A1 and EQ_SEL/A0 pins when the I2C_EN pin is high.

Table 1. DP159 I

HDMI_SEL/A1 pin

EQ_SEL/A0 pin

7-bit I

Read Slave Address

Write Slave Address

Low (VIL)

Low (VIL)

7’b1011110 or 0x5E

0xBD

0xBC

Low (VIL)

High (VIH)

7’b1011101 or 0x5D

0xBB

0xBA

High (VIH)

Low (VIL)

7’b1011100 or 0x5C

0xB9

0xB8

High (VIH)

High (VIH)

7’b1011011 or 0x5B

0xB7

0xB6

Figure 1. Local I

The example implementation selects the slave address of 7’b1011110.

2

DP159 as DisplayPort Retimer

SLLA358 – December 2015

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