參數(shù)資料
型號： DS3112N
廠商： DALLAS SEMICONDUCTOR
元件分類： Digital Transmission Controller
英文描述： DATACOM, FRAMER, PBGA256
封裝： 27 X 27 MM, PLASTIC, BGA-256
文件頁數(shù)： 34/134頁
文件大?。?/td> 900K
代理商： DS3112N
DS3112
129 of 134
C-Bit Parity Mode
Unlike the M23 application which uses the C bits for stuffing, the C-bit Parity Mode assumes that a stuff
bit should be placed at every opportunity and hence the C bits can be used for other purposes. See Table
14.2D for a list of how the C bits are redefined in the C-Bit Parity Mode.
C Bit Assignment for C-Bit Parity Mode Table 14.2D
M
Subframe
Number
C Bit
Number
Function
Description
11
2
3
Application ID
Reserved
Far End Alarm
and Control
(FEAC)
This bit (which is fixed to a value of 1) identifies the
T3 data stream as operating in C-Bit Parity Mode.
Must be set to one (1).
A serial communications channel that contains a
repeating 16-bit codeword that indicates the state of
the far-end and can control the near-end by invoking
loopbacks both on the T3 and T1 lines.
If no
codewords are being sent, the channel contains all
ones.
21
2
3
Unused
All unused bits are set to a one (1).
31
2
3
C-Bit Parity (CP)
All three CP bits are set to the same value as the two P
bits. If the three CP bits are not equal, a majority vote
is used to decode the true value.
41
2
3
FEBE
All three Far End Block Error (FEBE) bits shall be set
to one (111) if the local T3 framer did not incur an
error in either the M bits or F bits nor has it detected a
CP parity error. The FEBE bits are set to any value
except 111 when an error is detected in the M bits or F
bits or if a CP parity error is detected. During an LOF
event, these bits are set to 000.
51
2
3
Data Link
These three C bits make up a 28.2 kbps HDLC
(LAPD) maintenance data link over which three
76 octet messages are sent from the local end to the
remote end once a second.
61
2
3
Unused
Must be set to 1.
71
2
3
Unused
Must be set to 1.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS3112N+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC TEMPE T3/E3 MUX FRMR & M13/E13/G.747 MUX 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
DS3112N+W 功能描述:網(wǎng)絡(luò)控制器與處理器 IC TEMPE T3/E3 MUX FRMR & M13/E13/G.747 MUX 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
DS3112NC1 制造商:Maxim Integrated Products 功能描述:T3 E3 MULTIPLEXER, 3.3V T3/E3 FRAMER AND M13/E13/G.747 MUX - Rail/Tube
DS3112ND1E 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
DS3112RD 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
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