1) Pin 20 (CLKIN) The - PowerPoint Presentation

1. 1) Pin 20 (CLKIN)The input reference clock is 25MHz. According to "Table 7-6. Clocking Modes" in the datasheet, this means that the FC bit rate is about 2Gbps. Typically need 50MHz oscillator to achieve FC data bit rate of 4Gbps.Check to make sure this FC rate is supported by the connected deserializer.-> We will change the input reference clock to 50MHz as you guided to get the FC rate up to 4Gbps. But, isn’t it sufficient to just use 2Gbps(25MHz) with Non-sync mode when you check the ISP output Data rate below? (Just Question)- Recent Data Rate -SENSOR : 1920X1080*30fps*12bit*2(HDR) = 1.49Gbps (372Mbps per LANE)ISP : 1920*1080*30fps*8bit*2(HDR) = 995Mbps (248Mbps per LANE)SER : 50Mhz*80 = 4Gbps [Figure 1 - SNLS552C – SEPTEMBER 2017 – REVISED OCTOBER 2020][Figure 2 - SNLA267A–March 2019–Revised June 2019]

2. 2) Pin 19 (CLKOUT/IDX)For an 8-bit I2C address of 0x30, you can remove the 10-kOhm pull-up resistor and just use the 40.2-kOhm pull-down resistor.-> Apply completed.3. Update and share circuit diagrams (senior Lee Joohyun) - ISP→ cap. voltage check and please update to circuit. - Serializer→ MODE resistor value change to R7: 470ohm, R8: 1Kohm - Change PoC L9 inductor with highter temperature spec. and C12 16V --> 25V. - Please share the circuit after applying them.Recent Circuit

3. 3) Pins 14, 13 (DOUT+/-)Make sure that the AC coupling capacitors used on the DOUT+/- pins match the AC coupling capacitors used on the RIN+/- pins in the connected deserializer.-> It will be checked by Phoenix board (Ford ECU). (Ford recognized 02 Dec 2021 that we use the Non-Sync mode.)

4. 4) L5, L1, and L11The Ferrite Beads used at the VDD1, VDD_PLL, and VDDDRV pins must have the following characteristics:Z=1000-kOhms@100MHzDCR<=500-mOhmsThe DCR of the FBs used here are 1-Ohm. Need to use a part with a lower DCR.The 953 EVM uses "BLM18AG102SN1D". Use the same or similar part.-> We will change L5, L1, L11 to BLM18AG102SN1D as you guided. But please confirm that which one is correct guide among your recommend above and [Figure 8-3] from Datasheet (SNLS552C – SEPTEMBER 2017 – REVISED OCTOBER 2020). Because Rdc of “BLM18AG102SN1D” is not meet the <25mOhm. Is it Okay? Also, if we need to meet the “Z=1000-kOhms@100MHz & DCR<=500-mOhms” then, please kindly recommend the Full Part name of FB to change.Current CircuitBLM18AG102SN1D Datasheet953 Datasheet

5. 5) The PoC does match the 4G circuit included in the datasheet and is suitable for use in CSI-2 Non-Synchronous mode. However, please keep in mind that this PoC network is rated for current up to 150mA. Current exceeding this limit will affect the impedance characteristics of the Ferrite Beads and negatively affect the signal integrity.Also, the 4G PoC network is suitable when the FC line rate is around 4Gbps. But since the Non-Synchronous External Clock mode is selected and a 25MHz clock is applied at CLKIN, the FC line rate is 2Gbps.Make sure to use a PoC network that offers high-enough impedance over the Nyquist frequency range of the FC and BC, such that signal integrity is not affected.-> I have a question with the PoC Filter that you mentioned above. To clarify my question, let you know my History that I choose current PoC Filter. 1) At First, I chose the 4G PoC constructed with LQH3NPZ100MJR(L1) and BLM18HE152SZ1(FB1-3) as [Figure 8-1]. 2) Doing the WCCA(MathCad) about Camera Circuits with LGE and Ford, there was a request to meet the Itemp @125ºC spec with L1, because LQH3NPZ100MJR have just Itemp value with 530mA @105ºC. 3) So I replaced L1 to TDK ADL3225VT-100M which can meet the higher Itemp @125ºC. 4) the current through the PoC network is about max 280mA @ 9V (about 2.5W). 5) And the Camera Input voltage from Phoenix board(Ford ECU) is Transient Voltage : 6V~13V (typ. 9.0V)So, here’s my question.Q1) Please let us know your PoC Filter that meet the PoC Current 500mA and up to 125ºC.Q2) Please let us know TI internal App Note with different PoC Circuits for different temp and current ratings. (I don’t know your e-mail so attached NDA with TI korea agency, Arrow, So I believe you can share the document to us. ->)LQH3NPZ100MJR DatasheetADL3225VT-100M Datasheet

6. 6) Pins 23, 24 (SDA and SCL)The pull-up resistors do match the general recommendation range. However, customer would need to calculate the optimum pull-up resistor for their system by referencing App Note SLVA689 (linked in the datasheet). Find the bus capacitance in your system and the rise time for the selected I2C mode (in datasheet) and then use SLVA689 to calculate the min/max values of the optimum pull-up resistors.-> Based on SLVA689 document, we calculated the range of the value for I2C pull up resistor of Standard Mode as [Figure 1]. I assume that TI has agreed with the item.[Figure 1 – Based on SLVA689–February 2015]

7. Questions_1IC pins- Do you agree with the latest version of 953 IC pins configured?See the comments I made in “LG_FORD_RGBIR_OV2778_MAX20446_R73_211122_ICC_Reviewed.pdf” for changes that I’ve suggested. Some changes need to be made and some things are suggested to be double-checked. For example, since you intend to connect the UB953 to a UB954 in Non-Synchronous mode, you should use a 50MHz oscillator on the CLKIN pin on the UB953 in order to achieve a 4Gbps Forward Channel line rate.- Do you agree with the latest version of 953 unused IC pins configured? (3 pins are floating)Yes, I agree with the current version’s unused pins configuration. The GPIO pins can be left floating if unused. However, TI recommends setting the GPIOx_INPUT_EN register bits for the unused GPIO pins to 0 to disable them. And the RES1 pin (Pin 22) must be left floating.

8. Questions_2Reference Clock- Do you agree with the refence clock setting when consider Clock jitter requirement?Yes, the jitter of the selected oscillator is fine. The UI_CLK_IN of the input clock is 40ns. And the jitter needs to be less than 5% of UI_CLK_IN. Since the chosen oscillator’s jitter is much less than 2ns, it can be used. Also, a 25MHz clock results in a 2Gbps FC line rate. Is this intended?- Do you agree with the Duty cycle when consider 953 specification?Yes, the duty cycle of the chosen oscillator (component X3) is within the 953 specifications.[CLK Information]##. CLKIN duty cycle requirement definitions (requirement of U3 and output of X3)→ X3 Duty cycle : 55% (max)→ U3 Duty cycle : Not information##. CLKIN jitter requirement definitions (requirement of U3 and output of X3)→ X3 Jitter : 3ps (max)→ U3 jitter : UI_CLK_IN = 1/freq. = 1/25Mhz → 40ns→ U3 jitter : 0.05UI_CLK_IN = 0.05*40ns = 2ns

9. Questions_3POC Inductor - Due to temperature and current problems, the POC inductor (L9) was changed from LQH3NPZ100MJRL to ADL3225VT-100M. Please refer to 3.1.2 below and check if there is a problem with only L9 while maintaining the Murata beads. Please check if there's no problem with the POC Components.What are the “temperature and current problems”? What is the current through the PoC network?The original 4G PoC circuit is rated up to 150mA and up to 105oC. This is because more DC bias current will affect the impedance characteristics of the Ferrite Beads.Exceeding the max current rating can negatively affect the signal integrity of the FC and BC.Generally, the current through the Ferrite Bead should be ~25% of its max rating.We do have a TI internal App Note with different PoC circuits for different temperature and current ratings, but it is under NDA.Please reach out over email if you can provide proof of NDA.Also, this is a 4Gbps PoC network. But the oscillator and MODE setting set a 2Gbps FC line rate. Need to choose a PoC network that is rated for the chosen line rate.

10. Questions_4I2C Resistor - We attached 2K of I2C pull-up resistance according to ISP's guide. Do you agree that there is no problem when using the Fast mode and Standard mode of DS90UB953?I2C2 : Serializer <-> ISPI2C0 : ISP <-> SensorThe 2-kOhm resistors match the general recommendations given in the datasheet, but we recommend following the App Note (SLVA689) linked in the datasheet (See “11.2 Documentation Support” section) for calculating the optimum pull-up resistor values for your system. This depends on the rise time of the selected I2C mode (Standard/Fast) and the capacitive load for each bus line in your system. More details are in the App Note.-> Based on SLVA689 document, we calculated the range of the value for I2C pull up resistor of Standard Mode as [Figure 1]. I assume that TI has agreed with the item.[Figure 1 – Based on SLVA689–February 2015]