DS90UB953A-Q1: CMOS configuration

Hello,

Once you establish link between the 953 and 954, you'll need to set your serializer and imager alias IDs:

- Des reg 0x4C: Select the right RX port to write

- Set/Check real I2C addresses

- Reg 0x5B SER DEVICE ID: Set the real serializer I2C address. This is typically loaded already

- Reg 0x5D SlaveID[0]: Set the real CMOS sensor I2C address

- Reg 0x5C SER_ALIAS_ID: Set the alias serializer I2C address

- Reg 0x65 SLAVE_ALIAS_ID[0] (camera alias ID): Set the alias CMOS sensor I2C address.

Communicate to and initialize the imager using the slave alias ID you set in reg 0x65.

Best,

Jiashow

Can I use same method for DS90UB935/936 Serializer and Deserializer?

yes, 953a shares the same script and same setting method as 935. 936 shares the same setting as 954 with same reg.

regards,

Steven

we are using 4 i2c device in the serializer side ( CMOS,DIGITAL POT,IO expander, etc.. ).can I use suggested  CMOS configuration method to other I2C devices? is it required  to add slave device attached to serializer side in the device tree source file(DTS)?

Yes, you can.

in your case, the local I2C mater is linked to de-ser., and the remote ser.'s i2c is linked with 4 i2c slave. for this link, the i2c master can visit these 4 remote i2c slave. in the 954 side, you need set:
1. i2c pass through in reg. 0x58[6]

2. remote slave IDx (the 4 i2c slave IDX), and their alias slave ID in reg. 0x65/66/67/68, then you can use the alias slave ID to visit these 4 i2c slavers respectively.

regarsd,

Steven 

Can I use same slave address and slave alias address?

For example ,Reg 0x5D Slave ID[0]=0x35,0x65 SLAVE_ALIAS_ID[0]=0x35

Is it possible?

It will better if you  provide any suggestion  regarding the DTS(device Tree Source ) file configuration for the above mentioned Architecture

Hi,

I added all I2C device slave address  (which is connected in the serializer side ) in the deserializer. but no slave address (device connected in the serializer side) is present at  /dev  folder why?

Hi,

Currently we are using ominivision camera( output is 8 /10 bit raw ).any configuration is required in the serializer and deserializer section?

Hi Vineeth,

Are you running in synchronous mode? Can you check reg 0x58 and make sure it's set to 0x5E? Are you getting stable lock with the serializer?

Best,

Jiashow

Hi,

Can we access backward and forward channel simultaneously? any impact on the performance?

Hi Vineeth,

You should be able to send I2C command from the deserializer to the serializer via the back channel. The serializer will send the ack command back via the forward channel.

Best,

Jiashow

Hi,

Is any compatible issue with image sensor and serializer? we are using omini vision camera(OV2311,0V2310 etc..)

Hi Vineeth,

The imager is CSI interface right? What's the max CSI output bandwidth of the imager? How is the I2C configured on the imager?

Best,

Jiashow

Hi,

The imager is CSI interface right? Yes

What's the max CSI output bandwidth of the imager?  2 Lane mipi (800mbps)

Hi Vineeth,

I don't think there's any compatibility issues with the imager and the serializer.

Can you provide the registers you configured for the slave/alias IDs? If you try to communicate to the imager, is there I2C activities between the imager and the serializer?

Best,

Jiashow

Hi,

How to operate serializer in Non-Synchronous Internal Mode? please provide the register settings .

Hi Vineeth,

For the MODE resistors you need to change them to 71.5k pull-up and 56.2k pull down.

You can refer to section 7.4.1.3 in the 953 datasheet for more information.

Best,

Jiashow

Hi,

I need to use GPIO 0  pin of serializer for cmos reset operation. could you share  the register configuration?

as per my understanding GPIO_INPUT_CTRL(0x0E) =0x1E (gpio0-output-enable ) 

                                        GPIO_INPUT_CTRL(0x0E)= 0x10(gpio control value)

after cmos reset    GPIO_INPUT_CTRL(0x0E)= 0x00(gpio control value) is it correct?

How to enable CSI-2 Replicate  mode in ds90ub954 serializer?

Hi Vineeth,

For GPIO,in reg 0x0E, you need to enable GPIO0 as output and turn off GPIO0 as input. Then you can set reg 0x0D[4] = 0 and 0x0D[0] to 1 to toggle GPIO0 output.

On 954, reg 0x21[7] sets the CSI replication.

Best,

Jiashow

Hi,

we have generated a Test pattern in ds90ub935 serializer . i have referred the pattern generation section 7.6.4 Code Example for Pattern Generator.but we got black and white patterns . is it correct? how can we generate color pattern in the ds90ub935 serializer?

Hi Vineeth,

I believe you're configuring the pattern correctly. The black and white pattern you're showing here is the default pattern.

Best,

Jiashow