PanelBus
SLDS149 − AUGUST 2004
17
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
I
2
C register map (continued)
Video receiver KSV. This value may be used to determine that the video receiver is HDCP capable. Valid KSVs
contain 20 ones and 20 zeros, a characteristic that is verified by video transmitter hardware before encryption
is enabled.
Ri’
Subaddress = 08
Read Only
7
6
5
4
3
2
1
0
Ri’ [7:0]
Subaddress = 09
Read Only
7
6
5
4
3
2
1
0
Ri’ [15:8]
Link verification response. Updated every 128
th
frame. It is recommended that graphics systems protect against
errors in the I
2
C transmission by re-reading this value when unexpected values are received. This value is
available at all times between updates.
AKSV
Subaddress = 10
Read/Write
Default = 00
7
6
5
4
3
2
1
0
AKSV[7:0]
Subaddress = 11
Read/Write
Default = 00
7
6
5
4
3
2
1
0
AKSV[15:8]
Subaddress = 12
Read/Write
Default = 00
7
6
5
4
3
2
1
0
AKSV[23:16]
Subaddress = 13
Read/Write
Default = 00
7
6
5
4
3
2
1
0
AKSV[31:24]
Subaddress = 14
Read/Write
Default = 00
7
6
5
4
3
2
1
0
AKSV[39:32]
Video transmitter KSV. Writing to 0x14 triggers the authentication sequence in the device.
An
Subaddress = 18
Read/Write
Default = 00
7
6
5
4
3
2
1
0
An[7:0]
Subaddress = 19
Read/Write
Default = 00
7
6
5
4
3
2
1
0
An[15:8]
Subaddress = 1A
Read/Write
Default = 00
7
6
5
4
3
2
1
0
An[23:16]
