Operational Description
3.3.2.2 Layer-1 Command/Indication Codes and State Diagrams in LT-S Mode
Table 14
Commands and Indications in LT-S Mode
Command (downstream)
Abbr. Code Remarks
Deactivate request
DR
0000 (x)
Send continuous zeros
Send single zeros
SCZ
0001 Transmission of pseudo-ternary pulses at
96 kHz frequency (x)
SSZ
0010 Transmission of pseudo-ternary pulses at
2 kHz frequency (x)
Activate request downstream
Activate request loop
ARD 1000
ARL
DID
1010 Activation request for loop 2
Deactivate indication
downstream
1111 Deactivation acknowledgement, quiescent
state
Indication (upstream)
Abbr. Code Remarks
Lost signal level
LSL
0001 No receive signal
Lost framing upstream
RSYU 0100 Receiver is not synchronous
ARU 1000 Info 1 received
Activate request upstream
Activate indication upstream
Deactivate indication upstream
AIU
DIU
1100 Synchronous receiver
1111 Timer (32 ms) expired or info 0 received
(during 16 ms) after deactivation request
(x) unconditional commands
Semiconductor Group
177
INFINEON [ Infineon ]
