参数资料
型号: PEF80902
厂商: INFINEON TECHNOLOGIES AG
英文描述: 4B3T Second Gen. Modular ISDN NT(Ordinary)
中文描述: 4B3T二将军模块化综合业务数字网新台币(普通)
文件页数: 36/83页
文件大小: 1168K
代理商: PEF80902
PEF 80902
Functional Description
Data Sheet
28
2001-11-12
LTD
LT Disable
This unconditional command forces the U-transceiver to state
Test
, where it
transmits U0. No further action is initiated.
RES
Reset
Unconditional command which resets the U-transceiver.
SSP
Send Single Pulses
Unconditional command which requests the transmission of single pulses on
the U-interface.
TIM
Timing
The U-transceiver is requested to enter state
IOM Awaked
.
U-Interface Events
U0
U0 detected
U0 is recognized after 120 symbols (1ms) with zero level in a row. Detection
may last up to 2 ms.
U2
U2 detected
The U-transceiver detects U2 if continuous binary 0
s are found after
descrambling and LOF = 0 for at least 8 subsequent U-frames. U2 is detected
after 8 to 9 ms.
U4H
U4H detected
U4H is recognized, if the U-transceiver detects 16 subsequent binary 1
s after
descrambling.
AWR
Awake signal (U2W) detected
AWT
Awake signal (U1W) has been sent out
LOF
Loss of Framing on U-interface
TxE
Timer ended, the started timer has expired
Timers
The start of timers is indicated by TxS, the expiry by TxE. The following table shows
which timers are used.
Table 12
Timer
T05
Timers
Duration (ms)
0.5
Function
C/I code recognition
State
Pend. Deactivation,
Deactivating
Start Awaking Uk0
T6
6
Supervises U1W repetition
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