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參數(shù)資料
| 型號： | DS2187 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | Receive Line Interface(接收線接口) |
| 中文描述： | DATACOM, PCM TRANSCEIVER, PDIP18 |
| 封裝： | 0.300 INCH, DIP-18 |
| 文件頁數(shù)： | 5/9頁 |
| 文件大小： | 85K |
| 代理商： | DS2187 |
DS2187
022798 5/9
ZERO CODE SUPPRESSION
The device will decode incoming B8ZS (RCLKSEL=0)
or HDB3 (RCLKSEL=1) code words and replace them
with an all zero code when ZCSEN=1. When ZCSEN=0,
code words will pass through the device without being
altered. This feature can be disabled when the DS2187
is used with transceiver devices such as the DS2180A
DS2181A, DS2141A, or DS2143.
ALARM DETECTION
The extracted data is monitored for network alarm and
error conditions. RCL is set when 192 consecutive zer-
os occur; it is cleared on the next one occurrence. AIS
is set when less than three zeros have appeared at
RPOS and RNEG during the last two periods of the
RAIS signal; once set, AIS will remain high for the next
two periods of RAIS. AIS will return low when more than
two zeros appear. BPV reports bipolar violations as
they occur at RPOS and RNEG; B8ZS code words will
not be flagged by BPV when ZCSEN=1.
BYPASSING AND
LAYOUT CONSIDERATIONS
The DS2187 contains both precision analog and high–
speed digital circuitry on the same chip. The power sup-
plies of these circuits (AVDD, AVSS, DVDD and DVSS)
should be connected to system analog and digital sup-
plies. If separate system supplies do not exist, the ap-
propriate supply pins can be tied together. Tying the
analog and digital supplies together on the DS2187 will
not degrade its performance, provided the power supply
is sufficiently decoupled.
To assure optimum performance, the length of LCAP,
RTIP and RRING printed circuit board traces should be
minimized and isolated from neighboring interconnect.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2187+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Receive Line Interface 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 |
| DS2187S | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Receive Line Interface 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 |
| DS2187S/T&R | 制造商:Maxim Integrated Products 功能描述:IC RECEIVE LINE INTERFACE 20SOIC |
| DS2187S/T&R | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Receive Line Interface 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 |
| DS2187S+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Receive Line Interface 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 |
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