DS90UH925Q-Q1 Datasheet, PDF (36/56 Pages) Texas Instruments – 720p 24-bit Color FPD-Link III Serializer with HDCP

DS90UH925Q-Q1
SNLS336J – OCTOBER 2010 – REVISED NOVEMBER 2014
www.ti.com
Register Maps (continued)
ADD
(dec)
160
161
162
163
Table 6. Serial Control Bus Registers (continued)
ADD
(hex)
REGISTER
NAME
0xA0 RX BCAPS
Bit(s)
7
6
5
4
3:2
1
0
0xA1 RX BSTATUS0
7
6:0
0xA2 RX BSTATUS1 7:4
3
2:0
0xA3 KSV FIFO
7:0
REG-
ISTER
TYPE
R
R
R
R
R
R
R
R
R
R
DEFAULT
(hex)
FUNCTION
DESCRIPTION
0x13
0x00
0x00
0x00
Repeater
KSV FIFO
Fast I2C
Features
Fast Re-
auth
Max
Devices
Device
Count
Max
Cascade
Cascade
Depth
KSV FIFO
Reserved
Indicates if the attached Receiver supports
downstream connections. This bit is valid once the
Bksv is ready as indicated by the BKSV_RDY bit in
the HDCP
KSV FIFO Ready
Indicates the receiver has built the list of attached
KSVs and computed the verification value
Fast I2C: The HDCP Receiver supports fast I2C.
Since the I2C is embedded in the serial data, this bit
is not relevant
Reserved
HDCP v1.1_Features
The HDCP Receiver supports the Enhanced
Encryption Status Signaling (EESS), Advance
Cipher, and Enhanced Link Verification options.
The HDCP Receiver is capable of receiving
(unencrypted) video signal during the session re-
authentication.
Maximum Devices Exceeded: Indicates a topology
error was detected. Indicates the number of
downstream devices has exceeded the depth of the
Repeater's KSV FIFO
Total number of attached downstream device. For a
Repeater, this will indicate the number of
downstream devices, not including the Repeater.
For an HDCP Receiver that is not also a Repeater,
this field will be 0
Reserved
Maximum Cascade Exceeded: Indicates a topology
error was detected. Indicates that more than seven
levels of repeaters have been cascad-ed together
Indicates the number of attached levels of devices
for the Repeater
KSV FIFO
Each read of the KSV FIFO returns one byte of the
KSV FIFO list composed by the downstream
Receiver.
36
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