DS90UH948-Q1 Datasheet, PDF (72/91 Pages) Texas Instruments – FPD-Link III to OpenLDI Deserializer

DS90UH948-Q1
SNLS473A – OCTOBER 2014 – REVISED JANUARY 2016
www.ti.com
Register Maps (continued)
Table 11. Serial Control Bus Registers (continued)
ADD
(hex)
0xE2
Register
Name
RPTR_TX2
Bit(s) Function
7:1 PORT2_ADDR
Type
R
0
PORT2_VALID R
0xE3 RPTR_TX3
7:1
0
PORT3_ADDR R
PORT3_VALID R
0xE8 XRPTR_STS 7:2
1
0
RESERVED
R
RX_
R
ENCRYPTED
KSV_WRITTEN R
0xE9 XRPTR_CTL 7:4 RESERVED
R
3
XRPTR_NO_
RW
INBAND
2
XRPTR_HPD
RW
1
XRPTR_LIST_ RW
RDY
0
XRPTR_ENABLE RW
0xEA XRPTR_
7
BSTS0
XRPTR_MAX_ RW
DEVS
6:0 XRPTR_DEV_ RW
CNT
Default
Description
Value (hex)
HDCP Repeater Transmit Port 2 Register
0
Transmit Port 2 I2C Address
Indicates the I2C address for the Repeater Transmit Port.
0
Transmit Port 2 Valid
Indicates that the HDCP Repeater has a transmit port at the I2C
Address identified by upper 7 bits of this register
HDCP Repeater Transmit Port 3 Register
0
Transmit Port 3 I2C Address
Indicates the I2C address for the Repeater Transmit Port.
0
Transmit Port 3 Valid
Indicates that the HDCP Repeater has a transmit port at the I2C
Address identified by upper 7 bits of this register
0
Reserved
0
RX Encrypted:
Indicates Repeater is receiving encrypted data.
0
KSV Written:
This flag will be set after the upstream device has written the
Aksv value to the HDCP Repeater. This bit will be cleared once
Ready has been asserted following setting of the
XRPTR_LIST_RDY flag in the XRPTR_CTL register.
0
Reserved
0
External Control Inband Signaling disable:
This bit controls whether the Repeater will send inband
encryption and AVMUTE controls to the attached HDCP
Transmitters.
0 : Send Encryption/AVMUTE controls inband with video data.
1 : Don't send Encryption/AVMUTE controls inband with video
data.
0
External Control Hot-Plug Detect
This bit should be set following detection of a new downstream
HDCP Receiver. This signal should remain high for a short
period of time and then cleared.
0
Repeater KSV List Ready:
This register bit indicates to the device that the BStatus and
KSV List data have been loaded for the HDCP Repeater.
Following setting of this bit, the device will compute the SHA-1
checksum and indicate Ready to the upstream device. This flag
will read-back a 1 after computing the SHA-1 value. The value
will be cleared if a new KSV is written by the upstream device.
0
Repeater External Control Enable:
Setting this bit will disable the internal HDCP Repeater
controller and allow use of an external controller for HDCP
Repeater operations. This mode is useful in devices that may
include multiple upstream HDCP capable video sources.
0
External Control Max Devices Exceeded
Indicates a topology error was detected. Indicates the number
of downstream devices has exceeded the depth of the
Repeater’s KSV FIFO.
0
External Control Device Count
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.
72
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