PEF81902FV1.1 Lantiq, PEF81902FV1.1 Datasheet - Page 207

• Manufacturer Part Number: PEF81902FV1.1
• Manufacturer: Lantiq

Specifications of PEF81902FV1.1

• Lead Free Status / RoHS Status: Supplier Unconfirmed

LOOP
Reset value: 08
TRANS
U/IOM
LBBD
LB2
Data Sheet
®
7
0
Transparent/ Non-Transparent Loopback
In transparent mode data is both passed on and looped back, whereas in
non-transparent mode data is not forwarded but substituted by 1s (idle
code) and just looped back
0 =
1 =
Close LBBD, LB2, LB1 towards U or towards IOM
Switch that selects whether loopback LB1, LB2 or LBBD is closed towards
U or towards IOM
the setting affects all test loops, LBBD, LB2 and LB1
an individual selection for LBBD, LB2, LB1 is not possible
0 =
1 =
Close complete loop (B1, B2, D) near the system interface
– the direction towards which the loop is closed is determined by bit U/IOM
– the state machine has to be in state ’Transparent’ first (e.g. by C/I = DT)
0 =
1 =
Close loop B2 near the system interface
– the direction towards which the loop is closed is determined by bit U/IOM
– the state machine has to be in state ’Transparent’ first (e.g. by C/I = DT)
before data is output on the U-interface
before data is output on the U-interface
H
6
0
transparent mode
non-transparent mode
’1’s are sent on the IOM
LB1, LB2, LBBD loops are closed towards IOM
LB1, LB2, LBBD loops are closed towards U
complete loopback open
complete loopback closed
TRAN
®
S
-2
5
U/IOM
4
read*
193
®
-2 interface in the corresponding time-slot
)
/write
3
1
LBBD
2
®
Register Description
®
LB2
Address:
1
PEF 81902
2001-11-12
LB1
0
70
®
®
H