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參數(shù)資料
| 型號(hào)： | PEB80900H |
| 英文描述： | ?Network Termination Controller? |
| 中文描述： | ？網(wǎng)絡(luò)終端控制器？ |
| 文件頁(yè)數(shù)： | 138/181頁(yè) |
| 文件大?。?/td> | 3288K |
| 代理商： | PEB80900H |
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PEB 80900
Part II
’
IEC-T
’
: Operational Description
Data Sheet
126
2001-04-02
7.3.2
IOM
Control Information for (De-) Activation Upstream
DID
1 1 1 1
Deactivation Indication Downstream. DID informs the downstream
unit that the upstream unit is also deactivated. The layer 1 devices are
now ready to receive awake signals; the lOM Interface may be
powered down after 4 IOM
frames.
Power Up. The upstream unit (NTC-T AM with IEC-T functionality
selected in NT-PABX/TE mode) acknowledges the TIM request to
initialize an interrupt to the processor from ICC by changing the C/I
channel contents.
Frame Jump. The NTC-T AM with IEC-T functionality selected in NT-
PABX mode informs the layer 2 downstream unit that some data have
been lost due to buffer over/underflow. The NTC-T AM with IEC-T
functionality selected in NT-PABX mode absorbs up to 18 μs phase
wander between the Uk0 interface and the lOM Interface clocks,
which are not controlled by the NTC-T AM with IEC-T functionality
selected (in NT-PABX modes) as in the other NT modes.
0 1 0 0 Resynchronizing indication Downstream. RSYD informs the
downstream unit that the upstream unit isn't synchronous. This
occurs usually at the beginning of normal activation after an awake
signal has been detected and sent out and allows the LT-RP to start
the awake procedure on the second Uk0 link downstream. RSYD is
also given if the NTC-T AM with IEC-T functionality selected (NT or
NT-RP) was in the fully activated state and has lost synchronization
afterwards (but transmission of INFO U5 will not be interrupted).
PU
0 1 1 1
FJ
0 0 1 0
RSYD
TIM
0 0 0 0
Enable Timing. In power-down, the downstream unit of the IOM
interface has detected an awake signal on the line or an activation
request, if it is a layer 2 device. For further activation, it requests
clocks and timing on the lOM interface. Clocks are applied by the
upstream unit as long as no DIU is given.
Activation Request Upstream. The downstream unit of the IOM
interface has detected an awake signal on the line or requests
activation, if it is a layer 2 device.
Activation Request for Local Loop 3 Upstream. The downstream layer
2 unit of the IOM
Interface requests activation with loop 3.
ARU
1 0 0 0
ARL
1 0 0 1
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相關(guān)代理商/技術(shù)參數(shù) |
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| PEB8090FV1.1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Infineon Technologies AG 功能描述: |
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| PEB8091FGDV1.1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Infineon Technologies AG 功能描述: |
| PEB8091HDV1.1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Infineon Technologies AG 功能描述: |
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