Datasheet

DS90UB913Q, DS90UB914Q

SNLS420B –JULY 2012–REVISED APRIL 2013

www.ti.com

Table 9. Output States

Inputs Outputs

Serial Inputs PDB OEN OSS LOCK Pass DATA, GPIO, CLK

I2S

X 0 X X Z Z Z Z

X 1 0 0 L or H L L L

X 1 0 1 L or H Z Z Z

Static 1 1 0 L L L L/Osc(Register Bit

Enable)

Static 1 1 1 H Previous State L L

Active 1 1 0 H L L L

Active 1 1 1 H Valid Valid 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 I

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

C peripherals in order to properly address the target device.

See Figure 36 for an example of this function.

• ECU is the I

C master and has an I

C master interface

• The I

C interfaces in DES A and DES B are both slave interfaces

• The I

C protocol is bridged from DES A to SER A and from DES B to SER B

• The I

C interfaces in SER A and SER B are both master interfaces

If master controller transmits I

C 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 I

C pass

through function.

Product Folder Links: DS90UB913Q DS90UB914Q