EVMK2H: TCI6636K2H

I am not sure what external loopback are you trying to do... please elaborate on your question.. Which peripheral interface are you trying to use? Also which RTOS SDK version are you using?

Best Regards,
Yordan

hi,

 I need to establish a AIF2 LTE CPRI on TCI6636k2H with mistral RTM BOC over optical cables. The problem arises in the project is "External loop back test " with optical cables. 

1)  what is the difference between internal loop back test and external loop back test?

2) Is there any changes need to do in the aif2 lte cpri example project  code  to implement a External loop back test?

The below console tells that result of the aif2 lte cpri example project code. 

[C66xx_0] Beginning AIF2 LTE testing:
test: CPRI_4X_LTE_10MHZ
AIF CPRI mode
link 0 is disabled
link 1 is disabled
link 2 is disabled
link 3 runs at 4x rate
outbound data type: DL
outbound data width: 15 bit
inbound data type: DL
inbound data width: 15 bit
link 4 is disabled
link 5 is disabled
Number of monolithic packets received in RX queue channel0: 28
Number of monolithic packets in TX free queue for channel0: 28
Number of monolithic packets received in RX queue channel1: 28
Number of monolithic packets in TX free queue for channel1: 28
Test a) Monolithic Packet Data Recv: on chan: 0 are :28
Test a) Monolithic Packet Data Recv: on chan: 1 are :28
Test a) Monolithic Packet Data Send/Recv: PASS on channel: 2
Test b1) Monolithic Packet Tx Descriptor Counts:0 PASS
Test b2) Monolithic Packet Tx Complete Descriptor Counts:56 PASS
Test b3) Monolithic Packet Rx Descriptor Counts:0 PASS
Test b4) Monolithic Packet Rx Free Descriptor Counts:56 PASS

Ending CPRI_4X_LTE_10MHZ test
All tests have passed.

MCSDK 3.x for Keystone II devices(K2H, K2K, K2L, K2G & K2E)

CCSv5.5 is used 

Hi,

I am not an expert in those interfaces. I've notified the corresponding teams to elaborate. They will post their feedback directly here.

Best Regards,
Yordan

hi,
Thank you for your valuable response.