DS90UB901Q_15 Datasheet, PDF (28/50 Pages) Texas Instruments – 10 - 43MHz 14 Bit Color FPD-Link III Serializer and Deserializer with Bidirectional Control Channel

DS90UB901Q, DS90UB902Q
SNLS322E – JUNE 2010 – REVISED APRIL 2013
www.ti.com
Resistor RID Ω (±0.1%)
0, GND
2.0k
4.7k
8.2k
12.1k
39.0k
(1) Specification is by design.
Table 3. ID[x] Resistor Value – DS90UB901Q
ID[x] Resistor Value - DS90UB901Q Ser
Address 7'b⁽¹⁾
7b' 101 1000 (h'58)
7b' 101 1001 (h'59)
7b' 101 1010 (h'5A)
7b' 101 1011 (h'5B)
7b' 101 1100 (h'5C)
7b' 101 1110 (h'5E)
Address 8'b 0 appended (WRITE)
8b' 1011 0000 (h'B0)
8b' 1011 0010 (h'B2)
8b' 1011 0100 (h'B4)
8b' 1011 0110 (h'B6)
8b' 1011 1000 (h'B8)
8b' 1011 1100 (h'BC)
Resistor RID Ω (±0.1%)
0, GND
2.0k
4.7k
8.2k
12.1k
39.0k
(1) Specification is by design.
Table 4. ID[x] Resistor Value – DS90UB902Q
ID[x] Resistor Value - DS90UB902Q Des
Address 7'b⁽¹⁾
7b' 110 0000 (h'60)
7b' 110 0001 (h'61)
7b' 110 0010 (h'62)
7b' 110 0011 (h'63)
7b' 110 0100 (h'64)
7b' 110 0110 (h'66)
Address 8'b 0 appended (WRITE)
8b' 1100 0000 (h'C0)
8b' 1100 0010 (h'C2)
8b' 1100 0100 (h'C4)
8b' 1101 0110 (h'C6)
8b' 1101 1000 (h'C8)
8b' 1100 1100 (h'CC)
CAMERA MODE OPERATION
In Camera mode, I²C transactions originate from the Master controller at the Deserializer side (Figure 29). The
I²C slave core in the Deserializer will detect if a transaction is intended for the Serializer or a slave at the
Serializer. Commands are sent over the bidirectional control channel to initiate the transactions. The Serializer
will receive the command and generate an I²C transaction on its local I²C bus. At the same time, the Serializer
will capture the response on the I²C bus and return the response on the forward channel link. The Deserializer
parses the response and passes the appropriate response to the Deserializer I²C bus.
To configure the devices for camera mode operation, set the Serializer MODE pin to Low and the Deserializer
MODE pin to High. Before initiating any I²C commands, the Deserializer needs to be programmed with the target
slave device addresses and Serializer device address. SER_DEV_ID Register 0x07h sets the Serializer device
address and SLAVE_x_MATCH/SLAVE_x_INDEX registers 0x08h~0x17h set the remote target slave addresses.
In slave mode the address register is compared with the address byte sent by the I²C master. If the addresses
are equal to any of registers values, the I²C slave will acknowledge and hold the bus to propagate the transaction
to the target device otherwise it returns no acknowledge.
DS90UB901Q
Serializer
DS90UB902Q
Deserializer
CMOS
Image
Sensor
DIN[13:0]
HS,VS
PCLK
ROUT[13:0]
HS,VS
PCLK
ECU
Module
PC
SDA
SCL
I²C
I²C
SDA
SCL
Figure 29. Typical Camera System Diagram
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