PEB 24911 H V1.3 Lantiq, PEB 24911 H V1.3 Datasheet - Page 140

• Manufacturer Part Number: PEB 24911 H V1.3
• Manufacturer: Lantiq

Specifications of PEB 24911 H V1.3

• Lead Free Status / Rohs Status: Supplier Unconfirmed

6.4.7
The Loop register controls local loopbacks within the DFE-Q V2.1. For the loopback
configurations that are available by the LOOP register see
LOOP
Reset value: 08
DLB
TRANS
Data Sheet
7
0
LOOP - Loop Back Register
0 =
1 =
Close Framer/Deframer Loopback
– the loopback is closed at the analog/digital interface
– prerequisite is that LB1, LB2, LBBD and U/IOM
– prerequisite is that the DFE-Q V2.1 is in a transparent state, e.g. by
– only user data is looped and no maintenance data is not looped back
– the DLB loop operates always in transparent mode
0 =
1 =
Transparent/ Non-Transparent Loopback
– in transparent mode user data is both passed on and looped back,
– if LBBD, LB2, LB1 is closed towards the IOM
– bit TRANS has no effect on DLB (always transparent) and the analog
0 =
1 =
applying C/I-command ’Data Through DT’.
whereas in non-transparent mode data is not forwarded but substituted
by ’1’s (idle code) and just looped back
is set to ’0’ then the state machine has to be put into state ’Transparent’
first (e.g. by C/I = DT) before data is output on the U-interface
loopback (ARL operates always in transparent mode)
H
DLB
6
no action
issues a 40 kHz test signal - suitable for testing of test equipment
Framer/Deframer loopback open
Framer/Deframer loopback closed
sets transparent loop mode for LBBD, LB2, LB1
sets non-transparent mode for LBBD, LB2, LB1
’1’s are sent on the IOM
TRANS
5
U/IOM
4
read*
130
®
®
-2 interface in the corresponding time-slot
)
/write
3
1
LBBD
Chapter
®
2
®
interface and bit TRANS
are set to ’0’
Register Description
4.4.1.5.
Address: 10
LB2
1
PEF 24911
2001-07-16
LB1
0
H