DS90UH947-Q1 Datasheet, PDF (50/87 Pages) Texas Instruments – 1080p OpenLDI to FPD-Link III Serializer with HDCP

DS90UH947-Q1
SNLS455 – NOVEMBER 2014
ADD
(dec)
32
ADD
(hex)
0x20
Register Name
Deserializer
Capabilities
38
0x26 Link Detect Control
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Table 10. Serial Control Bus Registers (continued)
Bit(s)
7
6
5
4
3
2
1
0
7:2
1:0
Register
Type
RW
RW
RW
RW
RW
RW
RW
RW
Default
(hex)
0x00
0x00
0x00
Function
Description
FREEZE DES
CAP
Port0/Port1
Send_Freq
Port0/Port1
Send_EQ
Port0/Port1
Dual Link
Capable
Port0/Port1
Dual Channel
Port0/Port1
VID_24B_HD_A
UD
Port0/Port1
DES_CAP_FC_
GPIO
Port0/Port1
LINK DETECT
TIMER
Freeze Deserializer Capabilities. Prevent auto-loading of the
Deserializer Capabilities by the Bidirectional Control Channel. The
Capabilities will be frozen at the values written in registers 0x20 and
0x21.
Reserved.
Send Frequency Training Pattern.
Send Equalization Training Pattern.
Dual link capabilities. Indicates if the Deserializer is capable of dual
link operation.
In a dual-link device, indicates if this is the primary or secondary
channel.
0: Primary channel (channel 0).
1: Secondary channel (channel 1).
Deserializer supports 24-bit video concurrently with HD audio. This
field is automatically configured by the Bidirectional Control Channel
once RX Lock has been detected. Software may overwrite this value,
but must also set the FREEZE DES CAP bit to prevent overwriting by
the Bidirectional Control Channel.
Deserializer supports GPIO in the Forward Channel Frame. This field
is automatically configured by the Bidirectional Control Channel once
RX Lock has been detected. Software may overwrite this value, but
must also set the FREEZE DES CAP bit to prevent overwriting by the
Bidirectional Control Channel.
Reserved.
Bidirectional Control Channel Link Detect Timer. This field configures
the link detection timeout period. If the timer expires without valid
communication over the reverse channel, link detect will be
deasserted.
00: 325 microseconds.
01: 162 microseconds.
10: 650 microseconds.
11: 1.3 milliseconds.
50
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