DS90UH927Q Datasheet, PDF (49/59 Pages) Texas Instruments – 5MHz - 85MHz 24-bit Color FPD-Link III Serializer with HDCP

DS90UH927Q
ADD
(dec)
194
ADD Register
(hex) Name
0xC2 HDCP CFG
Bit(s)
7
6
5
4:3
2
1
0
Register
Type
RW
RW
RW
RW
RW
RW
RW
Default
(hex)
0x80
Function Description
ENH LV
Enable Enhanced Link Verification
Allows checking of the encryption Pj value on
every 16th frame
0: Enhanced Link Verification disabled
1: Enhanced Link Verification enabled (default)
HDCP
EESS
Enables Enhanced Encryption Status Signaling
(EESS) instead of the Original Encryption Status
Signaling (OESS)
0: OESS mode enabled (default)
1: EESS mode enabled
TX RPTR
Transmit Repeater Enable
Enables the transmitter to act as a repeater. In this
mode, the HDCP Transmitter incorporates the
additional authentication steps required of an
HDCP Repeater.
0: Transmit Repeater mode disabled (default)
1: Transmit Repeater mode enabled
ENC
Mode
Encryption Control Mode
Determines mode for controlling whether
encryption is required for video frames
00: Enc_Authenticated (default)
01: Enc_Reg_Control
10: Enc_Always
11: Enc_InBand_Control (per frame)
If the Repeater strap option is set at power-up,
Enc_InBand_Control (ENC_MODE == 11) will be
selected. Otherwise, the default will be
Enc_Authenticated mode (ENC_MODE == 00).
Wait
Enable 100 ms Wait: The HDCP 1.3 specification
allows for a 100 ms wait to allow the HDCP
Receiver to compute the initial encryption values.
The FPD-Link III implementation guarantees that
the Receiver will complete the computations
before the HDCP Transmitter. Thus the timer is
unnecessary.
0: 100 ms timer disabled (default)
1: 100 ms timer enabled
RX DET
SEL
RX Detect Select: Controls assertion of the
Receiver Detect Interrupt.
0: The Receiver Detect Interrupt will be asserted
on detection of an FPD-Link III Receiver. (default)
1: the Receiver Detect Interrupt will also require a
receive lock indication from the receiver.
HDCP AV
MUTE
Enable AVMUTE This bit may only be set if the
HDCP_EESS bit is also set.
0: Resume normal operation (default)
1: Initiate AVMUTE operation. The transmitter will
ignore encryption status controls while in this
state.
Copyright © 1999-2012, Texas Instruments Incorporated
49