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參數(shù)資料
| 型號(hào)： | DS2180A |
| 英文描述： | T1 Transceiver |
| 中文描述： | T1收發(fā)器 |
| 文件頁數(shù)： | 18/35頁 |
| 文件大小： | 481K |
| 代理商： | DS2180A |
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DS2180A
18 of 35
RSR: RECEIVE STATUS REGISTER
Figure 17
(MSB)
BVCS
ECS
RYEL
(LSB)
RLOS
RCL
FERR
B8ZSD
RBL
SYMBOL
BVCS
POSITION
RSR.7
NAME AND DESCRIPTION
Bipolar Violation Count Saturation.
Set when the 8-bit counter
at BVCR saturates.
Error Count Saturation.
Set when either of the 4-bit counters at
ECR saturates.
Receive Yellow Alarm.
Set when yellow alarm detected.
(Detected yellow alarm format determined by CCR.4 and CCR.3.)
Receive Carrier Loss.
Set when 32 consecutive 0’s appear at
RPOS and RNEG.
Frame Bit Error.
Set when F
T
(193S) or FPS (193E) bit error
occurs.
Bipolar Eight Zero Substitution Detect.
Set when B8ZS code
word detected.
Receive Blue Alarm.
Set when two consecutive frames have less
than three 0’s (total) in the data stream (F-bit positions not tested).
Receive Loss of Sync.
Set when resync is in process; if RCR.1=0,
RLOS transitions high on an OOF event or carrier loss indicating
auto resync.
ECS
RSR.6
RYEL
RSR.5
RCL
RSR.4
FERR
RSR.3
B8ZSD
RSR.2
RBL
RSR.1
RLOS
RSR.0
RECEIVE ALARM REPORTING
Incoming serial data is monitored by the transceiver for alarm occurrences. Alarm conditions are reported
in two ways: via transitions on the alarm output pins and registered interrupt, in which the host controller
reads the RSR in response to an alarm-driven interrupt. Interrupts may be direct, in which the transceiver
demands service for a real-time alarm, or count-overflow triggered, in which an onboard alarm event
counter exceeds a user-programmed threshold. The user may mask individual alarm conditions by
clearing the appropriate bits in the receive interrupt mask register (RIMR).
ALARM SERVICING
The host controller must service the transceiver in order to clear an interrupt condition. Clearing
appropriate bits in the RIMR will unconditionally clear an interrupt. Direct interrupt (those driven from
real-time alarms) will be cleared when the RSR is directly read unless the alarm condition still exists.
Count-overflow interrupts (BVCS, ECS) are not cleared by a direct read of the RSR. They will be cleared
only when the user presets the appropriate count register to a value other than all 1’s. A burst read of the
RSR will not clear an interrupt condition.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2180A+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC T1 Transceiver 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 |
| DS2180AN | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC T1 Transceiver 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 |
| DS2180AQ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 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 |
| DS2180AQ/T&R | 制造商:Maxim Integrated Products 功能描述:T1 TRANSCEIVER-PLCC-TRL - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC TRANSCEIVER T1 44-PLCC 制造商:Maxim Integrated Products 功能描述:Network Controller & Processor ICs T1 Transceiver |
| DS2180AQ/T&R+ | 制造商:Maxim Integrated Products 功能描述:T1 TRANSCEIVER PLCC TRL LF - Tape and Reel |
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