PEB24911HV13 Lantiq, PEB24911HV13 Datasheet - Page 121

• Manufacturer Part Number: PEB24911HV13
• Manufacturer: Lantiq

Specifications of PEB24911HV13

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Nine MON-0 commands are defined and can be interpreted. MON-0 commands are
applied at DIN, MON-0 messages are issued at DOUT for confirmation. MON-0
messages have the highest priority among MON-0,2,8 and are issued first if i.e. a MON-
2 or a MON-8 message is simultaneously outstanding.
•
Table 15
Data Sheet
Hex-
code
i1-i8
00
50
51
52
53
54
AA
LT
D
H
LBBD
LB1
LB2
RCC
NCC
MON-0 Functions
U
H
UTC
Function
Hold
Provokes no change. It may be used as a preliminary message in
configurations where the acknowledgment is delayed. E.g. in a repeater
configuration the NT-RP could answer with H while the EOC-
acknowledgment is passed upstream. Thereby it can be avoided that
the LT-control unit misinterprets the delayed ACK as a malfunction. The
device issues Hold if no NT or broadcast address is used or if the d/m
indicator is set to (0).
Close complete loop-back (B1, B2, D)
The NT does not close the complete loop-back immediately after receipt
of this code. Instead it issues the C/I-command AIL (in “Transparent”
state and auto mode) or ARL in the states “Error S/T” and
“Synchronized”. This allows the downstream device to close the loop-
back if desired (e.g. S-transceiver). If the downstream device does not
close the loop a MON-8 command (LBBD) must be returned and the
loop-back is closed within the U-transceiver.
Closes B1 loop-back in NT
All B1-channel data will be looped back within the NT U-transceiver.
Closes B2 loop-back in NT
All B2-channel data will be looped back within the NT U-transceiver.
Request corrupt CRC
Upon receipt the NT transmits corrupted (= inverted) CRCs upstream.
This allows to test the near end block error counter on the LT-side. The
far end block error counter at the NT-side is stopped and NT-error
indications (MON-1) are retained.
Notify of corrupt CRC
Upon receipt of NCC the NT-block error counters (near-end only) are
disabled and error indications are retained. This prevents wrong error
counts while corrupted CRCs are sent (MON-8 CCRC).
Unable to comply
Message sent instead of an acknowledgment if an undefined EOC-
command was received by the NT.
111
Monitor Commands
PEF 24911
2001-07-16