PEB24911HV13 Lantiq, PEB24911HV13 Datasheet - Page 77

• Manufacturer Part Number: PEB24911HV13
• Manufacturer: Lantiq

Specifications of PEB24911HV13

• Lead Free Status / Rohs Status: Supplier Unconfirmed

PEF 24911
Functional Description
S/T Deactivated
The state “S/T Deactivated” will be entered if the received ACT- and SAI-bits are set to
(0). In this state the signal SL3T, ACT = (0), DEA = (1) and UOA = (0) are transmitted
®
downstream. On the IOM
-2-bus the C/I-code UAI is issued while the received SAI = (0).
In order to initiate a complete activation from the S/T deactivation state, the LT needs to
set the UOA-bit to (1). This will occur if either of the following three conditions are met:
– C/I = AR(LT-activation)
– SAI = (1) & AR(TE-activation with exchange control [DIN = C/I UAR])
– SAI = (1)(TE-activation without exchange control [DIN = C/I DC])
“S/T deactivated” will be left if the received ACT bit is (1), or the C/I code AR0 is applied.
Tear Down
In “Tear Down” state, transmission ceases in order to deactivate the basic access, and
the U-transceiver waits for a response (no signal level, LSU) from the NT-side.
Tear Down Error
“Tear Down Error” state is entered after loss of framing has been detected. Transmission
ceases in order to deactivate the basic access and the U-transceiver waits for a
response (no signal level, LSU) from the NT-side. EI3-indication is transmitted after a
transition forced by RES1 from the wait-for-TN or EQ-training states. In the case of
transition from the “Loss of synchronization” state RSY is sent.
Test
This “Test” mode is entered when the unconditional commands LTD, SSP or Pin-SSP is
applied. It is left when pin SSP is set inactive again and the C/I-channel code DR or
RES1 is received. Single pulses (SP) and DEAC are output in “Test” state. The U-
transceiver does not react to the receipt of a wake-up signal TN.
Transparent
This “Transparent” state corresponds to the fully active state in the case of a normal
activation for call control. It may also be entered in the case of a loop-back #2 if the NT
issues ACT = 1 or in case of a single-channel loop-back in the NT. The LT-side is
informed that the status “ready for sending” is reached (indication AI). If the NT-side
loses transparency (receipt of ACT = 0), the LT-side is informed by making use of the C/
I-channel indication EI2, but no state change is performed. Upon reception of ACT= (1)
the C/I indication AI is issued again. If the S/T-interface is deactivated (SAI = (0) & ACT
= (0)), the device is transferred to the S/T deactivated state.
Data Sheet
67
2001-07-16