DS90UH925Q Datasheet, PDF (40/47 Pages) Texas Instruments – 720p 24-bit Color FPD-Link III Serializer with HDCP

DS90UH925Q
ADD
(dec)
196
ADD Register
(hex) Name
0xC4 HDCP STS
Bit(s)
7
6
5
4
3
2
1
0
Register
Type
R
R
R
R
R
R
R
R
Default
(hex)
0x00
Function
I2C ERR
DET
RX INT
RX Lock
DET
DOWN
HPD
RX DET
KSV LIST
RDY
KSV RDY
AUTHED
Description
HDCP I2C Error Detected
This bit indicates an error was detected on the
embedded communications channel with the
HDCP Receiver. Setting of this bit might indicate
that a problem exists on the link between the
HDCP Transmitter and HDCP Receiver. This bit
will be cleared on read
RX Interrupt
Status of the RX Interrupt signal.
The signal is received from the attached HDCP
Receiver and is the status on the INTB_IN pin of
the HDCP Receiver. The signal is active low, a 0
indicates an interrupt condition
Receiver Lock Detect
This bit indicates that the downstream Receiver
has indicated Receive Lock to incoming serial data
Hot Plug Detect
This bit indicates the local device or a downstream
repeater has reported a Hot Plug event, indicating
addition of a new receiver. This bit will be cleared
on read
Receiver Detect
This bit indicates that a downstream Receiver has
been detected
HDCP Repeater KSV List Ready
This bit indicates that the Receiver KSV list has
been read and is available in the KSV_FIFO
registers. The device will wait for the controller to
set the KSV_LIST_VALID bit in the HDCP_CTL
register before continuing. This bit will be cleared
once the controller sets the KSV_LIST_VALID bit.
HDCP Receiver KSV Ready
This bit indicates that the Receiver KSV has been
read and is available in the HDCP_ BKSV
registers. If the device is not a Repeater, it will wait
for the controller to set the KSV_VALID bit in the
HDCP_CTL register before continuing.
This bit will be cleared once the controller sets the
KSV_VALID bit.. The bit will also be cleared if
authentication fails.
HDCP Authenticated
Indicates the HDCP authentication has completed
successfully. The controller may now send video
data requiring content protection. This bit will be
cleared if authentication is lost or if the controller
restarts authentication
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