DS90UR916Q_13 Datasheet, PDF (29/45 Pages) Texas Instruments – 5 - 65 MHz 24-bit Color FPD-Link II Deserializer with Image Enhancement

www.ti.com
DS90UR916Q
SNOSB46E – MARCH 2011 – REVISED APRIL 2013
BISTEN
(SER)
BISTEN
(DES)
PCLK
(RFB = L)
RGB[7:0]
HS, VS, DE
DATA
(internal)
PASS
Prior Result
DATA
X
(internal)
PASS Prior Result
Normal
PRBS
X = bit error(s)
X
X
BIST Test
BIST Duration
Figure 26. BIST Waveforms
PASS
FAIL
BIST
Result
Held
Normal
Optional Serial Bus Control
The DS90UR916 may also be configured by the use of a serial control bus that is I2C protocol compatible. By
default, the I2C reg_0x00'h is set to 00'h and all configuration is set by control/strap pins. A write of 01'h to
reg_0x00'h will enable/allow configuration by registers; this will override the control/strap pins. Multiple devices
may share the serial control bus since multiple addresses are supported. See Figure 27.
1.8V
HOST
SCL
SDA
V_DDIO
4.7k
4.7k
10 k
ID[X]
R_ID
SER
or
SCL _DES
SDA
To other
Devices
Figure 27. Serial Control Bus Connection
The serial bus is comprised of three pins. The SCL is a Serial Bus Clock Input. The SDA is the Serial Bus Data
Input / Output signal. Both SCL and SDA signals require an external pull up resistor to V_DDIO. For most
applications a 4.7 k pull up resistor to V_DDIO may be used. The resistor value may be adjusted for capacitive
loading and data rate requirements. The signals are either pulled High, or driven Low.
The third pin is the ID[X] pin. This pin sets one of four possible device addresses. Two different connections are
possible. The pin may be pulled to V_DD (1.8V, NOT V_DDIO)) with a 10 kΩ resistor; or a 10 kΩ pull up resistor (to
V_DD1.8V, NOT V_DDIO)) and a pull down resistor of the recommended value to set other three possible addresses
may be used. See Table 9. Do not tie ID[x] directly to VSS.
The Serial Bus protocol is controlled by START, START-Repeated, and STOP phases. A START occurs when
SCL transitions Low while SDA is High. A STOP occurs when SDA transition High while SCL is also HIGH. See
Figure 28.
Copyright © 2011–2013, Texas Instruments Incorporated
Product Folder Links: DS90UR916Q
Submit Documentation Feedback
29