Texas Instruments FPD Link III - DS90UB901Q & DS90UB902Q EVK SERDESUB-16USB/NOPB SERDESUB-16USB/NOPB 데이터 시트

 

24 

SNLU100 – April 2012 

 

 
In Display mode, I2C transactions originate from the controller attached to the Serializer. 
The I2C slave core in the Serializer will detect if a transaction targets (local) registers 
within the Serialier or the (remote) registers within the Deserializer or a remote slave 
connected to the I2C master interface of the Deserializer. Commands are sent over the 
forward channel link to initiate the transactions. The Deserializer will receive the command 
and generate an I2C transaction on its local I2C bus. At the same time, the Deserializer 
will capture the response on the I2C bus and return the response as a command on the bi-
directional control channel. The Serializer parses the response and passes the appropriate 
response to the Serializer I2C bus. 
 
Note: The default settings for this EVK are shipped with a camera mode configuration, but 
this EVK also supports a display mode. This mode is suitable for setups where a host 
controller is connected to the DS90UB901Q Serializer end and a display module is 
connected to the DS90UB902Q Deserializer end. The I2C Master would need to be 
connected to the DS90UB901Q Serializer end. A typical setup for display mode is shown 
below: 

 

Deserializer

SCL

SDA

PDB

RIN

+

-

ID[x]

PASS

LOCK

ROUT[13:0]

HS,VS

PCLK

1.8V

10k

0

1.0k

1.0k

VDDIO

GPIO0
GPIO1

MODE (M_S)

Serializer

SCL

SDA

PDB

VDDIO

DOUT

+

-

ID[x]

DIN[13:0]
HS,VS

PCLK

1.8V

10k

0

1.0k

1.0k

VDDIO

GPIO0
GPIO1

RES0

VDDIO

BISTEN, RES0

1.8V 3.3V

VDD

18

V

DDI

O

1.8V 3.3V

VDD

18

V

DDI

O

(3.3V I/O)

(3.3V I/O)

GPU/FPGA 

Host

SCL

SDA

VDDIO

MODE (M_S)

Timing Controller

C

LCD

Display