DS90UH926Q-Q1 Datasheet, PDF (28/58 Pages) Texas Instruments – 720p 24-Bit Color FPD-Link III Deserializer With HDCP

DS90UH926Q-Q1
SNLS337K – OCTOBER 2010 – REVISED JANUARY 2015
www.ti.com
NO. IDEAL
RATIO
V_R4/V_DD33
1
0
2
0.121
3
0.152
4
0.242
5
0.311
6
0.402
7
0.492
8
0.583
9
0.629
IDEAL V_R4
(V)
0
0.399
0.502
0.799
1.026
1.327
1.624
1.924
2.076
Table 9. Configuration Select (MODE_SEL)
SUGGESTED SUGGESTED
RESISTOR R3 RESISTOR R4
kΩ (1% tol) kΩ (1% tol)
LFMODE ⁽¹⁾
REPEATER ⁽²⁾
BACKWARD
COMPATIBLE
(3)
I2S CHANNEL
B
(18–bit
MODE) ⁽⁴⁾
Open
40.2 or Any
L
L
L
L
294
40.2
L
L
L
H
280
49.9
L
H
L
L
240
76.8
L
H
L
H
226
102
H
L
L
L
196
130
H
L
L
H
169
165
H
H
L
L
137
191
H
H
L
H
124
210
L
L
H
L
(1) LFMODE:
L = frequency range is 15 – 85 MHz (Default)
H = frequency range is 5 – <15 MHz ¢
(2) Repeater:
L = Repeater mode is OFF (Default)
H = Repeater mode is ON
(3) Backward Compatible:
L = Backward Compatible mode is OFF (Default)
H = Backward Compatible mode is ON; SER = DS90UR905Q or DS90UR907Q
– frequency range = 15 - 65MHz, set LFMODE = L
(4) I2S Channel B:
L = I2S Channel B mode is OFF, Normal 24-bit RGB Mode (Default)
H = I2S Channel B mode is ON, 18-bit RGB Mode with I2S_DB Enabled. Note: use of GPIO(s) on unused inputs must be enabled by
register.
7.4.4 HDCP Repeater
When DS90UH925Q-Q1 and DS90UH926Q-Q1 are configured as the HDCP Repeater application, it provides a
mechanism to extend HDCP transmission over multiple links to multiple display devices. This repeater
application provides a mechanism to authenticate all HDCP Receivers in the system and distribute protected
content to the HDCP Receivers using the encryption mechanisms provided in the HDCP specification.
In this document, the DS90UH925Q-Q1 is referred to as the HDCP Transmitter or transmit port (TX), and the
DS90UH926Q-Q1 is referred to as the HDCP Receiver (RX). Figure 20 shows the maximum configuration
supported for HDCP Repeater implementations using the DS90UH925Q-Q1 (TX) and DS90UH926Q-Q1 (RX).
Two levels of HDCP Repeaters are supported with a maximum of three HDCP Transmitters per HDCP Receiver.
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