• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 62 subscribers
  • Views 172 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CCS/TPS23880: what's the port configuration for TPS23880 bt mode

Tom Kao
Prodigy 30 points
Part Number: TPS23880
Other Parts Discussed in Thread: TPS23881

Tool/software: Code Composer Studio

Hi All,

I want to config one tps23880 to bt mode(4 ports),  

The example code from slvc709c  is :

sysPortNum1 = tps_RegisterPort (tps2388x_i2cAddList[0], TPS238X_PORT_1);
sysPortNum2 = tps_RegisterPort (tps2388x_i2cAddList[0], TPS238X_PORT_2);
sysPortNum3 = tps_RegisterPort (tps2388x_i2cAddList[0], TPS238X_PORT_3);
sysPortNum4 = tps_RegisterPort (tps2388x_i2cAddList[0], TPS238X_PORT_4);

sysPortNum5 = tps_RegisterPort (tps2388x_i2cAddList[1], TPS238X_PORT_1);
sysPortNum6 = tps_RegisterPort (tps2388x_i2cAddList[1], TPS238X_PORT_2);
sysPortNum7 = tps_RegisterPort (tps2388x_i2cAddList[1], TPS238X_PORT_3);
sysPortNum8 = tps_RegisterPort (tps2388x_i2cAddList[1], TPS238X_PORT_4);

But I only have 4 ethernet ports, what's the setting for tps_RegisterPort?

  • 0
    TI__Mastermind 40100 points

    Hi Tom, we have forwarded this to appropriate engineer who can support. Please note it is US holiday so there may be a delay in our E2E response. Thank you!

  • 0 in reply to Darwin Fernandez
    TI__Genius 15655 points

    Hi Tom,

    The code you copied is just mapping the variables to the PSE port numbers, not configuring anything. You will need to configure register 0x29 to set all ports to 4 pair and 90W(write 0xFF to register 0x29). BTW, we recommend TPS23881 for BT applications as it uses 200mohm sese resistor and has better performance with lower cost. Thanks.

    Best regards,

    Penny

  • 0 in reply to Penny Xu
    Prodigy 30 points

    Hi Penny,

    When I initial my tps23880(one piece ) all ports to 4 pair, my setting is:
    tps_SetDevice4PPowerAllocation(tps2388x_i2cAddList[0],_4P_90W,_4P_90W);

    tps_SetDevice4PPowerAllocation(tps2388x_i2cAddList[1],_4P_90W,_4P_90W);

    Can you tell me what's the setting in the semi-auto mode to let
    phy ports map to PoE port?

    I want to do power management, so I need to call the function "tps_GetPortDetectRequestedClassStatus(sysPortNum, &detectStatus, &classStatus ,target)" to get ports event and call the function
    "(tps2388x_GetPortPowerEnableStatus(sysPortNum)"
    to get the port status.

    When I connect my PD to phy port1, which PoE port I need to read?
    e.g.
    (tps2388x_GetPortPowerEnableStatus(TPS238X_PORT_1 )
    or
    (tps2388x_GetPortPowerEnableStatus(TPS238X_PORT_2 )
    or all of those ports?

  • 0 in reply to Tom Kao
    TI__Genius 15655 points

    Hi Tom,

    The software uses TPS2388x's default configuration Alt A mode: channel 1-4 use I2C address 0x20 and channel 5-8 use I2C address 0x21. And your 0x29 configuration sets 4 BT ports:

    1. Port 1: channel 1&2, I2C address 0x20
    2. Port 2: channel 3&4, I2C address 0x20
    3. Port 3: channel 5&6, I2C address 0x21, (when reading registers, it is channel 1&2 of address 0x21)
    4. Port 4: channel 7&8, I2C address 0x21, (when reading registers, it is channel 3&4 of address 0x21)

    The sysPortNum1 to sysPortNum8 match channel 1-8. Thanks.

    Best regards,

    Penny