參數(shù)資料
型號(hào)： DS21554L
廠商： DALLAS SEMICONDUCTOR
元件分類： Digital Transmission Interface
英文描述： DATACOM, PCM TRANSCEIVER, PQFP100
封裝： 14 X 14 MM, LQFP-100
文件頁(yè)數(shù)： 55/117頁(yè)
文件大?。?/td> 698K
代理商： DS21554L
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DS21354 & DS21554
42 of 117
SYMBOL
POSITION NAME AND DESCRIPTION
RCL
SR1.1
Receive Carrier Loss. Set when 255 (or 2048 if CCR3.0=1) consecutive
zeros have been detected at RTIP and RRING. (note: a receiver carrier
loss based on data received at RPOSI and RNEGI is available in the HSR
register)
RLOS
SR1.0
Receive Loss of Sync. Set when the device is not synchronized to the
receive E1 stream.
ALARM CRITERIA Table 7-1
ALARM
SET CRITERIA
CLEAR CRITERIA
ITU SPEC.
RSA1 (receive signaling
all ones)
over 16 consecutive frames
(one full MF) timeslot 16
contains less than three
zeros
over 16 consecutive frames
(one full MF) timeslot 16
contains three or more
zeros
G.732
4.2
RSA0 (receive signaling
all zeros)
over 16 consecutive frames
(one full MF) timeslot 16
contains all zeros
over 16 consecutive frames
(one full MF) timeslot 16
contains at least a single
one
G.732
5.2
RDMA (receive distant
multiframe alarm)
bit 6 in timeslot 16 of
frame 0 set to one for two
consecutive MF
bit 6 in timeslot 16 of
frame 0 set to zero for two
consecutive MF
O.162
2.1.5
RUA1 (receive unframed
all ones)
less than three zeros in two
frames (512–bits)
more than two zeros in two
frames (512–bits)
O.162
1.6.1.2
RRA (receive remote
alarm)
bit 3 of non–align frame
set to one for three
consecutive occasions
bit 3 of non–align frame
set to zero for three
consecutive occasions
O.162
2.1.4
RCL (receive carrier loss)
255 (or 2048) consecutive
zeros received
in 255–bit times, at least
32 ones are received
G.775 / G.962
SR2: STATUS REGISTER 2 (Address=07 Hex)
(MSB)
(LSB)
RMF
RAF
TMF
SEC
TAF
LOTC
RCMF
TSLIP
SYMBOL
POSITION NAME AND DESCRIPTION
RMF
SR2.7
Receive CAS Multiframe. Set every 2 ms (regardless if CAS signaling
is enabled or not) on receive multiframe boundaries. Used to alert the
host that signaling data is available.
RAF
SR2.6
Receive Align Frame. Set every 250 ns at the beginning of align frames.
Used to alert the host that Si and Sa bits are available in the RAF and
RNAF registers.
TMF
SR2.5
Transmit Multiframe. Set every 2 ms (regardless if CRC4 is enabled)
on transmit multiframe boundaries. Used to alert the host that signaling
data needs to be updated.
SEC
SR2.4
One Second Timer. Set on increments of one second based on RCLK. If
CCR2.7=1, then this bit will be set every 62.5 ms instead of once a
second.
相關(guān)PDF資料
PDF描述
DS21554LN DATACOM, PCM TRANSCEIVER, PQFP100
DS2155G DATACOM, FRAMER, PBGA100
DS21600SN PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO16
DS21600N PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDIP8
DS2155LN DATACOM, FRAMER, PQFP100
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21554L+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3/5V E1 Transceiver 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
DS21554LB 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3/5V E1 Transceiver 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
DS21554LB+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3/5V E1 Transceiver 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
DS21554LBN 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
DS21554LBN+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3/5V E1 Transceiver 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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