PEB24901HV12 Lantiq, PEB24901HV12 Datasheet - Page 47

• Manufacturer Part Number: PEB24901HV12
• Manufacturer: Lantiq

Specifications of PEB24901HV12

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Semiconductor Group
Based on these protocols, control information is given downstream (directed from the
exchange to the terminal equipment) or upstream (directed from the terminal equipment
to the exchange) from one end point to the other via one or more parts of the whole
transmission line.
3.4.2.1
ARD
DR
DID
10– – Activation Request Downstream. The upstream unit of the IOM-2
0000 Deactivation Request. The upstream unit of the IOM-2 interface
1111 Deactivation Indication downstream. DID informs the downstream
IOM-2 C/I codes for (De-)Activation Downstream
interface is a layer 1 device which has just finished synchronizing. Or,
it is a layer 2 device (which does not synchronize) initiating activation.
Receiving this, the Quad IEC DFE-T in the exchange starts by sending
awake signal INFO U2W. After a successful awake procedure, the
IECQuad DFE-T sends INFO U2.
ARD represents the following group of activation requests:
ARN 1000 Activation Request no loop.
ARL 1001 Activation Request local loop only in the exchange.
AR2 1010 Activation Request loop 2 in the NT.
AR4 1011 Activation Request loop 4 only in the repeater.
For the description of the loops see section 3.3.
requests deactivation. This command must be applied at least 0.5 ms
to ensure that the downstream unit has reached the requested state,
after the information on the C/I-channel has been evaluated.
unit that the upstream unit is also deactivated. The layer 1 devices are
now ready to receive awake signals; the IOM-2 interface may be
powered down after 4 IOM frames.
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PEB 24901
02.95