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參數(shù)資料
| 型號(hào)： | PEF22508E |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | DATACOM, PCM TRANSCEIVER, PBGA256 |
| 封裝： | 17 X 17 MM, 1 MM PITCH, PLASTIC, LBGA-256 |
| 文件頁(yè)數(shù)： | 162/193頁(yè) |
| 文件大?。?/td> | 10683K |
| 代理商： | PEF22508E |
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OctalLIU
TM
PEF 22508 E
Functional Description
Data Sheet
70
Rev. 1.0, 2005-06-02
3.8.2
Automatic Modes
The following automatic modes are performed by the OctalLIU
TM:
Automatic clock source switching (see also: In slave mode (LIM0.MAS = 0) the DCO-R synchronizes to the
recovered route clock. In case of loss-of-signal (LOS) the DCO-R switches to Master mode automatically. If bit
CMR1.DCS is set, automatic switching from the recovered route clock to SYNC is disabled. See also Table 19.
Automatic transmit clock switching, see Chapter 3.9.3.
Automatic local and remote loop switching based on In-Band loop codes, see Chapter 3.11.2.
3.8.3
Error Counter
The OctalLIU
TM offers two error counters where each of them has a length of 16 bit:
Code Violation Counter, status registers CVCL and CVCH
PRBS error counter, status registers BECL and BECH
The error counters are buffered. Buffer updating is done in two modes:
One-second accumulation
On demand by handshake with writing to the DEC register
In the one-second mode an internal/external one-second timer updates these buffers and resets the counter to
accumulate the error events in the next one-second period. The error counter cannot overflow. Error events
occurring during an error counter reset are not lost.
3.8.4
One-Second Timer
A one-second timer interrupt can be generated internally to indicate that the enabled alarm status bits or the error
counters have to be checked. The one-second timer signal is output on port SEC/FSC if configured by
GPC1.CSFP(1:0) (GPC1). Optionally synchronization to an external second timer is possible which has to be
provided on pin SEC/FSC. Selecting the external second timer is done with GCR.SES.
Table 22
Summary of Alarm Detection and Release
Alarm
Detection Condition
Clear Condition
Loss-Of-Signal
(LOS)
No transitions (logical zeros) in a
programmable time interval of 16 to
4096 consecutive pulse periods.
Programmable receive input signal
threshold
Programmable number of ones (1 to 256) in
a programmable time interval of 16 to 4096
consecutive pulse periods. A one is a signal
with a level above the programmed
threshold.
Transmit Line Short
(XLS)
More than 3 pulse periods with
highly increased transmit line
current on XL1/2
Transmit line current limiter inactive, see
also Chapter 3.9.7
Transmit Ones-Density
(XLO)
32 consecutive zeros in the transmit
data stream on XL1/2
Cleared with each transmitted pulse
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PEF22508EV1.1-G | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC T/E RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| PEF22508EV11G | 制造商:Rochester Electronics LLC 功能描述: 制造商:Infineon Technologies AG 功能描述: |
| PEF22508EV11GXP | 制造商:Lantiq 功能描述:LINE INTERFACE UNITS |
| PEF22508EV11GXT | 制造商:Lantiq 功能描述:LINE INTERFACE UNITS |
| PEF22509EV1.1 | 制造商:Infineon Technologies AG 功能描述:SP000205605_T/E ASIC_TY_PB |
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