PSB2115HV1.2 Lantiq, PSB2115HV1.2 Datasheet - Page 303

• Manufacturer Part Number: PSB2115HV1.2
• Manufacturer: Lantiq

Specifications of PSB2115HV1.2

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Semiconductor Group
MON-8 Loop-Back Register
The loop-back register controls all analog (S/T-interface) and digital (IOM-2 interface)
loop-backs. Additionally the wake-up mode can be programmed.
Address: 2h AST
Value after Reset: 02
.
AST
SB1
SB2
SC
IB1
Asynchronous Timing.
Closes the loop-back for B1 channel data close to the activated S/T-
Closes the loop-back for B2 channel data close to the activated S/T-
Close the loop-back for B1 channel close to the IOM-2 interface (i.e. loop-
Defines the length of the Timing signal (DU = 0) on IOM-2. If synchronous
timing is selected (AST=0) the IPAC in LT-S mode will issue the timing
request only in the C/I channel of the selected timeslot (C/I = 0000b). This
mode is useful for applications where IOM-2 clock signals are not switched
off. Here the IPAC can pass the TE initiated activation via C/I = 0000b in
IOM-2 cannel 0 upstream to the U-interface device. In case IOM-2 clocks
can be turned off during power-down or the LT-S IPAC is pin-strapped to a
different timeslot than the U-interface device, synchronous timing signals
will not succeed in waking the U-interface device. Under these
circumstances asynchronous timing needs to be programmed (AST=1).
Here the line DU is set to ZERO for a period long enough to wake any U-
interface device, independent of timeslot or clocks. Typically asynchronous
timing is programmed for intelligent NT applications (IPAC pin-strapped to
LT-S with NT state machine).
Note:
The asynchronous timing option is restricted to configurations with the IPAC
operating with NT state machine (i.e., LT-S pin-strap & FSMM bit
programmed).
interface (i.e., loop-back IOM-2 data) in LT-S mode.
interface (i.e., loop-back IOM-2 data) in LT-S mode.
Close complete analog loop-back (2B+D) close to the S/T-interface.
Corresponds to C/I = ARL. Transparency is optional. Operational in LT-S
mode.
back S/T data). Transparent. IB1 and IB2 may be closed simultaneously.
H
SB1
SB2
SC
303
IB1
IB2
1
IB12
PSB 2115
PSF 2115
Appendix
RD/WR
11.97