參數資料
型號： DS21FT44N
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： Digital Transmission Controller
英文描述： DATACOM, FRAMER, PBGA300
封裝： 27 X 27 MM, 1.27 MM PITCH, MCMBGA-300
文件頁數： 58/117頁
文件大?。?/td> 691K
代理商： DS21FT44N
DS21FT44/DS21FF44
45 of 117
RIR: RECEIVE INFORMATION REGISTER (Address = 08 Hex)
(MSB)
(LSB)
TESF
TESE
LORC
RESF
RESE
CRCRC
FASRC
CASRC
SYMBOL
POSITION
NAME AND DESCRIPTION
TESF
RIR.7
Transmit Side Elastic Store Full. Set when the transmit side
elastic store buffer fills and a frame is deleted.
TESE
RIR.6
Transmit Side Elastic Store Empty. Set when the transmit
side elastic store buffer empties and a frame is repeated.
LORC
RIR.5
Loss of Receive Clock. Set when the RCLK pin has not
transitioned for at least 2
ms (3ms ± 1ms).
RESF
RIR.4
Receive Side Elastic Store Full. Set when the receive side
elastic store buffer fills and a frame is deleted.
RESE
RIR.3
Receive Side Elastic Store Empty. Set when the receive side
elastic store buffer empties and a frame is repeated.
CRCRC
RIR.2
CRC Resync Criteria Met. Set when 915/1000 code words
are received in error.
FASRC
RIR.1
FAS Resync Criteria Met. Set when three consecutive FAS
words are received in error.
CASRC
RIR.0
CAS Resync Criteria Met. Set when two consecutive CAS
MF alignment words are received in error.
SSR: SYNCHRONIZER STATUS REGISTER (Address = 1E Hex)
(MSB)
(LSB)
CSC5
CSC4
CSC3
CSC2
CSC0
FASSA
CASSA
CRC4SA
SYMBOL
POSITION
NAME AND DESCRIPTION
CSC5
SSR.7
CRC4 Sync Counter Bit 5. MSB of the 6-bit counter.
CSC4
SSR.6
CRC4 Sync Counter Bit 4
CSC3
SSR.5
CRC4 Sync Counter Bit 3
CSC2
SSR.4
CRC4 Sync Counter Bit 2
CSC0
SSR.3
CRC4 Sync Counter Bit 0. LSB of the 6-bit counter. The next
to LSB is not accessible.
FASSA
SSR.2
FAS Sync Active. Set while the synchronizer is searching for
alignment at the FAS level.
CASSA
SSR.1
CAS MF Sync Active. Set while the synchronizer is searching
for the CAS MF alignment word.
CRC4SA
SSR.0
CRC4 MF Sync Active. Set while the synchronizer is
searching for the CRC4 MF alignment word.
CRC4 SYNC COUNTER
The CRC4 Sync Counter increments each time the 8ms CRC4 multiframe search times out. The counter
is cleared when the framer has successfully obtained synchronization at the CRC4 level. The counter can
also be cleared by disabling the CRC4 mode (CCR1.0=0). This counter is useful for determining the
amount of time the framer has been searching for synchronization at the CRC4 level. ITU G.706 suggests
相關PDF資料
PDF描述
DS21FT44 DATACOM, FRAMER, PBGA300
DS21Q352 DATACOM, PCM TRANSCEIVER, PBGA256
DS21Q354 DATACOM, PCM TRANSCEIVER, PBGA256
DS21Q41BT DATACOM, FRAMER, PQFP128
DS21Q42TN DATACOM, FRAMER, PQFP128
相關代理商/技術參數
參數描述
DS21FT44N+ 功能描述:網絡控制器與處理器 IC 4x4 16/4x3 12 Chnl E1/E1 Framer 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
DS21Q348 功能描述:網絡控制器與處理器 IC 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
DS21Q348B 功能描述:網絡控制器與處理器 IC 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
DS21Q348DK 功能描述:網絡開發(fā)工具 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
DS21Q348N 功能描述:網絡控制器與處理器 IC 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
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