DS90UB913Q_13 Datasheet, PDF (46/63 Pages) TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS – DS90UB913Q/DS90UB914Q 10-100MHz 10/12- Bit DC-Balanced FPD-Link III Serializer and Deserializer with Bidirectional Control Channel

DS90UB913Q, DS90UB914Q
SNLS420B – JULY 2012 – REVISED APRIL 2013
Serial Inputs
PDB
Inputs
OEN
X
0
X
X
1
0
X
1
0
Static
1
1
Static
1
1
Active
1
1
Active
1
1
Table 9. Output States
OSS
X
0
1
0
1
0
1
LOCK
Z
L or H
L or H
L
H
H
H
Pass
Z
L
Z
L
Previous State
L
Valid
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Outputs
DATA, GPIO,
I2S
Z
L
Z
L
L
L
Valid
CLK
Z
L
Z
L/Osc(Register Bit
Enable)
L
L
Valid
Programmable Controller
An integrated I2C slave controller is embedded in the DS90UB913Q Serializer as well as the DS90UB914Q
Deserializer. It must be used to configure the extra features embedded within the programmable registers or it
can be used to control the set of programmable GPIOs.
Multiple Device Addressing
Some applications require multiple camera devices with the same fixed address to be accessed on the same I²C
bus. The DS90UB913/914 provides slave ID matching/aliasing to generate different target slave addresses when
connecting more than two identical devices together on the same bus. This allows the slave devices to be
independently addressed. Each device connected to the bus is addressable through a unique ID by programming
of the SLAVE_ID_MATCH register on Deserializer. This will remap the SLAVE_ID_MATCH address to the target
SLAVE_ID_INDEX address; up to 8 ID indexes are supported. The ECU Controller must keep track of the list of
I²C peripherals in order to properly address the target device.
See Figure 36 for an example of this function.
• ECU is the I²C master and has an I²C master interface
• The I²C interfaces in DES A and DES B are both slave interfaces
• The I²C protocol is bridged from DES A to SER A and from DES B to SER B
• The I²C interfaces in SER A and SER B are both master interfaces
If master controller transmits I²C slave 0xA0, the DES A address 0xC0 will forward the transaction to remote
Camera A. If the controller transmits slave address 0xA4, the DES B 0xC2 will recognize that 0xA4 is mapped to
0xA0 and will be transmitted to the remote Camera B. If controller sends command to address 0xA6, the DES B
0xC2 will forward transaction to slave device 0xA2.
The Slave ID index/match is supported only in the camera mode (SER: MODE pin = L; DES: MODE pin = H).
For Multiple device addressing in display mode (SER: MODE pin = H; DES: MODE pin = L), use the I²C pass
through function.
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