參數(shù)資料
型號(hào)： DS2181AQ
廠商： DALLAS SEMICONDUCTOR
元件分類： Digital Transmission Controller
英文描述： DATACOM, FRAMER, PQCC44
封裝： PLASTIC, LCC-44
文件頁(yè)數(shù)： 18/32頁(yè)
文件大小： 377K
代理商： DS2181AQ
DS2181A
25 of 32
RESET
A high-low transition on RST clears all internal registers except the three error counters; a resync is
initiated until RST returns high. RST must be held low on system power-up and when switching to/from
the hardware mode. Following reset, the host processor should update all on-chip registers to establish
desired operating modes.
HARDWARE MODE
An on-chip hardware control mode simplifies preliminary system prototyping and serves applications
which do not require the features of the serial port. Tying SPS low disables the serial port, clears all
internal register locations except those shown below, and redefines pins 14 through 18 as mode control
inputs. The mode control inputs establish device operational characteristics as shown in Table 8. The
hardware mode simplifies device retrofit into existing applications where control interfaces are designed
with discrete logic.
HARDWARE MODE CONTROL Table 8
PIN NUMBER
REGISTER LOCATION
NAME AND DESCRIPTION
14
(16)
TINR.5
TRA - Transmit Remote Alarm
0 = Normal operation
1 = Enable alarm
15
(17)
TXR.2
TDMA - Transmit Distant Multiframe
Alarm
0 = Normal operation
1 = Enable alarm
16
(18)
CCR.5/CCR.4
Data Format
0 = Input and output data AMI coded
1 = Input and output data HDB3 coded
17
(19)
CCR.3/CCR.2
Transmit and Receive CRC4 Multiframe
0 = Disabled
1 = Enabled
18
(20)
TCR.5/RCR.5
Transmit and Receive CAS Multiframe
0 = Enabled
1 = Disabled
NOTE:
1. Pin numbers for PLCC package are listed in parenthesis.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2181AQ/T&R 制造商:Maxim Integrated Products 功能描述:CEPT TRANCEIVER-PLCC-TRL - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC TXRX CEPT PRIMARY RATE 44PLCC
DS2181AQ/T&R+ 制造商:Maxim Integrated Products 功能描述:CEPT TRNSCVR 1TX 1RX 44PLCC - Tape and Reel
DS2181AQ/T&R 功能描述:網(wǎng)絡(luò)控制器與處理器 IC CEPT Primary Rate 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
DS2181AQ+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC CEPT Primary Rate 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
DS2181AQ+T&R 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:CEPT TRNSCVR 1TX 1RX 44PLCC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC TXRX CEPT PRIMARY RATE 44PLCC
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