SNLU226B February   2018  – April 2021 DS90UB960-Q1

 

  1. 1 Introduction
  2. 2 Features
  3. 3 Application Diagram
  4. 4 Major Components
  5. 5 Quick Start Guide
  6. 6 Board Connections
    1. 6.1 Power Supply
    2. 6.2 Power Over Coax Interface
    3. 6.3 MIPI CSI-2 Output Signals
    4. 6.4 FPD-Link III Signals
    5. 6.5 I2C Interface
    6. 6.6 Control Interface
  7. 7 Enable and Reset
  8. 8 ALP Software Setup
    1. 8.1  System Requirements
    2. 8.2  Download Contents
    3. 8.3  Installation of the ALP Software
    4. 8.4  Startup - Software Description
    5. 8.5  Information Tab
    6. 8.6  Registers Tab
    7. 8.7  Registers Tab - Address 0x00 Selected
    8. 8.8  Registers Tab - Address 0x00 Expanded
    9. 8.9  Scripting Tab
    10. 8.10 Sample ALP Python Script
      1. 8.10.1 Initialization
  9. 9 Troubleshooting ALP Software
    1. 9.1 ALP Loads the Incorrect Profile
    2. 9.2 ALP does not detect the EVM
  10. 10Typical Connection and Test Equipment
  11. 11Termination Device
  12. 12Typical Test Setup
  13. 13Equipment References
  14. 14Cable References
  15. 15Bill of Materials
  16. 16PCB Schematics
  17. 17Board Layout
  18. 18Revision History

6.2 Power Over Coax Interface

The DS90UB960-Q1EVM offers four Power-over-Coax interfaces (PoC) to connect cameras through a coaxial cable with FAKRA connectors. Power is delivered on the same conductor that is used to transmit video and control channel between the host and the camera. By default, 9V power supply is applied over the coax cable from a 1A LDO (Max 250 mA per PoC interface). Refer to Table 6-3 for other PoC configurations.

Each PoC interface uses a filter network as shown in Figure 6-1. The PoC network frequency response corresponds to the bandwidth compatible with DS90UB935-Q1 and DS90UB953-Q1 serializers.

GUID-603D83C0-B223-409C-83CA-4A641E121840-low.gif Figure 6-1 Power-over-Coax Network Compatible with DS90UB935-Q1 and DS90UB953-Q1
WARNING:

Verify that the power voltage is properly set before plugging into CN1. Power supply is not fused. Over-voltage will cause damage to boards directly connected due to incorrect input power supplies.

When interfacing to DS90UB913A-Q1 and DS90UB933-Q1 serializers, the PoC filter needs to be adjusted to match the circuit shown in Figure 6-2. The required updates are summarized in Table 6-2.

GUID-5840061C-60DD-4D49-AD00-B4624ECAC769-low.gifFigure 6-2 Power-over-Coax Network Compatible with DS90UB913A-Q1, DS90UB933-Q1, DS90UB935-Q1, and DS90UB953-Q1
Table 6-2 Required PoC Network Updates for Compatibility to DS90UB913A-Q1 and DS90UB933-Q1 Serializers
RX PortDescription of the Required Change
RX Port0Install L11 (100 µH).
Update R90 to 4.02 kΩ
Update C70 to 100 nF, C72 to 47 nF
RX Port1Install L13 (100 µH).
Update R92 to 4.02 kΩ
Update C71 to 100 nF, C73 to 47 nF
RX Port2Install L23 (100 µH).
Update R96 to 4.02 kΩ
Update C82 to 100 nF, C84 to 47 nF
RX Port3Install L25 (100 µH).
Update R98 to 4.02 kΩ
Update C83 to 100 nF, C85 to 47 nF
Table 6-3 Power-Over-Coax Power Supply Feed Configuration
Reference Signal Description
J19 VFEED_POC1 Power Over Coax Power Feed Selection 1
Short pins 1-2: +9V power supply from VFEED_LDO1 (Default)
Short pins 2-3: +5V power supply from 5V_SW
J22 VFEED_POC2 Power Over Coax Power Feed Selection 2
Short pins 1-2: +9V power supply from VFEED_LDO2 (Default)
Short pins 2-3: +5V power supply from 5V_SW
J15 VDD_EXT Power Over Coax Power Feed using +12V Main Power (J21)
Note: J16 and J14 must be left OPEN if using this configuration
Short pins 1-2: +12V power supply to VFEED_POC1
Short pins 2-3: +12V power supply to VFEED_POC2
J11.1 VFEED1 Remote power supply connection to CN1
Short J11.1-2: VFEED_POC1 (Default)
Short J11.1 & J12.1: VFEED_POC2
J11.3 VFEED2 Remote power supply connection to CN2
Short J11.3-4: VFEED_POC1 (Default)
Short J11.3 & J12.2: VFEED_POC2
J11.5 VFEED3 Remote power supply connection to CN3
Short J11.5-6: VFEED_POC1 (Default)
Short J11.5 & J12.3: VFEED_POC2
J11.7 VFEED4 Remote power supply connection to CN4
Short J11.7-8: VFEED_POC1 (Default)
Short J11.7 & J12.4: VFEED_POC2