參數資料
型號： DS3112
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： 34/134頁
文件大?。?/td> 900K
代理商： DS3112
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.
相關PDF資料
PDF描述
DS3131 SPECIALTY TELECOM CIRCUIT, PBGA256
DS3134 DATACOM, FRAMER, PBGA256
DS3150QN DATACOM, PCM TRANSCEIVER, PQCC28
DS3150Q DATACOM, PCM TRANSCEIVER, PQCC28
DS3150TN DATACOM, PCM TRANSCEIVER, PDIP48
相關代理商/技術參數
參數描述
DS3112+ 功能描述:網絡控制器與處理器 IC TEMPE T3/E3 MUX FRMR & M13/E13/G.747 MUX RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS3112+W 功能描述:網絡控制器與處理器 IC TEMPE T3/E3 MUX FRMR & M13/E13/G.747 MUX RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS3112D1 功能描述:網絡控制器與處理器 IC TEMPE T3/E3 MUX FRMR & M13/E13/G.747 MUX RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS3112D1+ 功能描述:網絡控制器與處理器 IC TEMPE T3/E3 MUX FRMR & M13/E13/G.747 MUX RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS3112DK 功能描述:網絡開發(fā)工具 DS3112 Dev Kit RoHS:否 制造商:Rabbit Semiconductor 產品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數據速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
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