參數(shù)資料
型號(hào)： DS21FF44N
廠商： DALLAS SEMICONDUCTOR
元件分類： Digital Transmission Controller
英文描述： DATACOM, FRAMER, PBGA300
封裝： 27 X 27 MM, BGA-300
文件頁(yè)數(shù)： 39/110頁(yè)
文件大?。?/td> 526K
代理商： DS21FF44N
DS21FT44/DS21FF44
34 of 110
SYNC/RESYNC CRITERIA Table 10–1
FRAME OR
MULTIFRAME
LEVEL
SYNC CRITERIA
RESYNC CRITERIA
ITU SPEC.
FAS
FAS present in frame N
and N + 2, and FAS not
present in frame N + 1
Three consecutive
incorrect FAS received
Alternate (RCR1.2=1)
the above criteria is met
or three consecutive
incorrect bit 2 of non–
FAS received
G.706
4.1.1
4.1.2
CRC4
Two valid MF
alignment words found
within 8 ms
915 or more CRC4 code
words out of 1000
received in error
G.706
4.2 and 4.3.2
CAS
Valid MF alignment
word found and
previous timeslot 16
contains code other than
all zeros
Two consecutive MF
alignment words
received in error
G.732 5.2
RCR2: RECEIVE CONTROL REGISTER 2 (Address=11 Hex)
(MSB)
(LSB)
Sa8S
Sa7S
Sa6S
Sa5S
Sa4S
RBCS
RESE
–
SYMBOL
POSITION
NAME AND DESCRIPTION
Sa8S
RCR2.7
Sa8 Bit Select. Set to one to have RLCLK pulse at the Sa8
bit position; set to zero to force RLCLK low during Sa8 bit
position. See Section 22 for timing details.
Sa7S
RCR2.6
Sa7 Bit Select. Set to one to have RLCLK pulse at the Sa7
bit position; set to zero to force RLCLK low during Sa7 bit
position. See Section 22 for timing details.
Sa6S
RCR2.5
Sa6 Bit Select. Set to one to have RLCLK pulse at the Sa6
bit position; set to zero to force RLCLK low during Sa6 bit
position. See Section 22 for timing details.
Sa5S
RCR2.4
Sa5 Bit Select. Set to one to have RLCLK pulse at the Sa5
bit position; set to zero to force RLCLK low during Sa5 bit
position. See Section 22 for timing details.
Sa4S
RCR2.3
Sa4 Bit Select. Set to one to have RLCLK pulse at the Sa4
bit position; set to zero to force RLCLK low during Sa4 bit
position. See Section 22 for timing details.
RBCS
RCR2.2
Receive Side Backplane Clock Select.
0 = if RSYSCLK is 1.544 MHz
1 = if RSYSCLK is 2.048 MHz
RESE
RCR2.1
Receive Side Elastic Store Enable.
0 = elastic store is bypassed
1 = elastic store is enabled
–
RCR2.0
Not Assigned. Should be set to zero when written.
相關(guān)PDF資料
PDF描述
DS21FT40N DATACOM, FRAMER, PBGA300
DS21FT40 DATACOM, FRAMER, PBGA300
DS21FT42 DATACOM, FRAMER, PBGA300
DS21FT42N DATACOM, FRAMER, PBGA300
DS21FF42 DATACOM, FRAMER, PBGA300
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21FT40 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Four x Three 12 Channel E1 Framer
DS21FT40N 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
DS21FT42 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl T1/T1 Framer 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
DS21FT42N 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl T1/T1 Framer 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
DS21FT44 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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