SN65DP159_16 Datasheet, PDF (32/63 Pages) Texas Instruments – SNx5DP159 6 Gbps DP++ to HDMI Retimer

SN65DP159, SN75DP159
SLLSEJ2C – JULY 2015 – REVISED JULY 2016
www.ti.com
8.5 Register Maps
8.5.1 DP-HDMI Adaptor ID Buffer
The SNx5DP159 device includes the DP-HDMI adapter ID buffer for HDMI/DVI adaptor recognition, defined by
the VESA DisplayPort Dual-Mode Standard Version 1.1, accessible by standard I²C[4] protocols through the
DDC interface when the HDMI_SEL/A1 pin is low. The DP-HDMI adapter buffer and extended DDC register for
Type 2 capability is accessed at target addresses 80h (Write) and 81h (Read).
The DP-HDMI adapter buffer contains a read-only phrase DP-HDMI ADAPTOR<EOT> converted to ASCII
characters, as shown in Table 3, and supports the WRITE command procedures (accessed at target address
80h) to select the subaddress, as recommended in the VESA DisplayPort Interoperability Guideline Adaptor
Checklist Version 1.0 section 2.3.
Table 3. SNx5DP159 DP-HDMI Adaptor ID Buffer and Extended DDC
Address
Description
00h
01h
02h
03h
04h
05h
06h
07h
HDMI ID code
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
Video Adaptor Identifier
Bit 2:0 ADAPTOR_REVISION
10h Bit 3 Reserved: but 0 for type 2
Bits 7:4 1010 = Dual mode defined by dual mode[1]
standard
11h IEE_OUI first two hex digits
12h IEE_OUI second two hex digits
13h IEE_OUI third two hex digits
14h
15h
16h
Device ID
17h
18h
19h
Hardware revision
1Ah Bits 7:4 major revision
Bits 3:0 minor revision
1Bh Firmware or software major revision
1Ch Firmware or software minor revision
Value HDMI
44h
50h
2Dh
48h
44h
4Dh
49h
20h
41h
44h
41h
50h
54h
4Fh
52h
04h
0
0
1010
08h
00h
28h
44h
50h
31h
35h
39h
00h
02h
00h
02h
00h
00h
Value DVI
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
0
0
0
08h
00h
28h
44h
50h
31h
35h
39h
00h
02h
00h
02h
00h
00h
Read or
Read/Write
Read only
Read only
Read only
Read only
Read only
Read only
Read only
Read only
Read only
32
Submit Documentation Feedback
Copyright © 2015–2016, Texas Instruments Incorporated
Product Folder Links: SN65DP159 SN75DP159