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TSER953: Receiving frames from CSI-2 interface

Cyrill Künzle
Prodigy 20 points
Part Number: TSER953
Other Parts Discussed in Thread: TDES954

I have CSI-2 with 600Mbps/lane and 4 lanes on TSER953 input port. I configured the TSER953 trough des TDES954. TSER953 is on RX0.
i2c addr tdes: 0x68, i2c-addr tser: 0x30.
i2c transfers:


--> 68 01 03
--> 68 F8 70
--> 70 58 CE
--> 70 5C 30
--> 68 1F 02
--> 68 33 43
--> 30 02 33
--> 30 32 88

Then I read the CSI-2 Receiver Status register (0x5c until 0x64) in a loop. All register remain at 0.
The CSI-2 stream seems to be correct. But the TSER953 doesn't receive anything. What i'm doing wrong?

  • 0
    TI__Guru** 103215 points

    Hello Cyrill,

    Does your sensor use CSI-2 continuous clock mode? If so, also be sure to set the 953 register 0x02[6] = 1 to enable continuous clock mode. 

    If everything it working correctly at least registers 0x61-0x63 should indicate values. How exactly have you confirmed that the sensor is properly streaming? Have you confirmed that you can read back the values that you wrote to the SER successfully? Do you have LOCK between the SER/DES?

    Best Regards,

    Casey 

  • 0 in reply to Casey McCrea
    Prodigy 20 points

    Hi Casey,

    I have non continues clock mode.

    I confirmed that the sensor is correctly streaming by measuring the MIPI signals with an oscilloscope.

    I just confirmed the written values to SER by reading them after write and they are correct. I also assume that I have LOCK.

    I also checked some registers after init:

    <-- 68 73 | 69 00
    <-- 68 74 | 69 00
    REG Line count = 0 (0)
    <-- 30 00 | 31 30
    ser csi-2 id = 48
    <-- 30 5C | 31 00
    ser csi-2 err cnt = 0
    <-- 30 5E | 31 00
    ser csi-2 err lane01 = 0x0
    <-- 30 5F | 31 00
    ser csi-2 err lane23 = 0
    <-- 30 60 | 31 00
    ser csi-2 err clk-lane = 0
    <-- 30 61 | 31 00
    ser csi-2 vc-id = 0
    <-- 30 62 | 31 00
    ser csi-2 wc (lsb) = 0
    <-- 30 63 | 31 00
    ser csi-2 wc (msb) = 0
    <-- 30 64 | 31 00
    ser csi-2 ecc = 0
    <-- 30 52 | 31 45
    ser general status = 0x45 (Link detect, HS PLL lock, RX lock)
    <-- 30 03 | 31 48
    ser mode sel = 0x48 (CSI-2 Sync, Mode Done, Mode Pin)

  • 0 in reply to Cyrill Künzle
    Prodigy 20 points

    I solved the problem. 2 MIPI lanes didn't work correctly.