Texas Instruments DS90UB921-Q1EVM, User Manual

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Demo Board Connections
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10 SNLU205 – March 2016
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DS90UB921-Q1EVM User's Guide
1.10 Demo Board Connections
Table 1-3. Power Supply
DESIGNATOR SIGNAL DESCRIPTION
J12 +12V
12V ±5% Main Power, 12V power connector that supplies
power to the entire board.
J17.2 +3.3V 3V3 EXT, 3.3V ±5%, Alternative to Main Power.
J21.3 +3.3V VDD33, 3.3V ±5%, Alternative to Main Power.
Table 1-4. USB2ANY Connector
DESIGNATOR DESCRIPTION
J7 mini USB 5 pin
Table 1-5. I2C Interface Header
DESIGNATOR SIGNAL
J30.1 VDDI2C
J30.2 SCL
J30.3 SDA
J30.4 GND
Configuration of the device may be done via the MODE_SEL[1:0]. These modes are latched into register
location during power-up:
Table 1-6. MODE_SEL Settings
MODE SETTING FUNCTION
ALTERNATE FREQUENCY
0
See Table 1-7 and Table 1-8
1
REPEATER
0 Repeater OFF (Default)
1 Repeater ON
18-BIT MODE
0 Normal 24-bit RGB Mode (Default)
1
18-bit RGB Mode. Note: use of GPIO(s) on unused inputs must be enabled
by Register.
(1)
Only set one high.
Table 1-7. Configuration Select (MODE_SEL) -- SW-DIP8 - S1
(1)
MODE # ALTERNATE FREQUENCY REPEATER 18- BIT MODE
1 0 0 0
2 0 1 0
3 0 1 1
4 1 0 0
5 1 0 1
6 1 1 0
7 1 1 1