參數(shù)資料
型號： DS21Q42TN
廠商： Maxim Integrated Products
文件頁數(shù)： 1/116頁
文件大?。?/td> 0K
描述： IC FRAMER ENHANCED T1 4X 128TQFP
標準包裝： 72
控制器類型： T1 調(diào)幀器
接口： 并行/串行
電源電壓： 2.97 V ~ 3.63 V
電流 - 電源： 75mA
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 128-LQFP
供應(yīng)商設(shè)備封裝： 128-LQFP（14x20）
包裝： 管件
1 of 116
062602
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple
revisions of any device may be simultaneously available through various sales channels. For information about device errata,
FEATURES
§ Four T1 DS1/ISDN-PRI/J1 framing
transceivers
§ All four framers are fully independent
§ Each of the four framers contain dual two-
frame elastic-store slip buffers that can connect
to asynchronous backplanes up to 8.192MHz
§ 8-bit parallel control port that can be used
directly on either multiplexed or
nonmultiplexed buses (Intel or Motorola)
§ Programmable output clocks for Fractional T1
§ Fully independent transmit and receive
functionality
§ Integral HDLC controller with 64-byte buffers
configurable for FDL or DS0 operation
§ Generates and detects in-band loop codes from
1 to 8 bits in length including CSU loop codes
§ Pin compatible with DS21Q44 E1 enhanced
quad E1 framer
§ 3.3V supply with 5V tolerant I/O; low-power
CMOS
§ Available in 128-pin TQFP package
§ IEEE 1149.1 support
FUNCTIONAL DIAGRAM
Receive
Framer
Elastic
Store
Transmit
Formatter
Elastic
Store
FRAMER #0
FRAMER #1
FRAMER #2
FRAMER #3
Control Port
ACTUAL SIZE
QUAD
T1
FRAMER
ORDERING INFORMATION
DS21Q42T
0°C to +70°C
DS21Q42TN
-40°C to +85°C
DESCRIPTION
The DS21Q42 is an enhanced version of the DS21Q41B quad T1 framer. The DS21Q42 contains four
framers that are configured and read through a common microprocessor-compatible parallel port. Each
framer consists of a receive framer, receive elastic store, transmit formatter, and transmit elastic store. All
four framers in the DS21Q42 are totally independent; they do not share a common framing synchronizer.
The transmit and receive sides of each framer are also totally independent. The dual two-frame elastic
stores contained in each of the four framers can be independently enabled and disabled as required. The
device fully meets all of the latest T1 specifications including ANSI T1.403-1995, ANSI T1.231-1993,
AT&T TR 62411 (12–90), AT&T TR54016, and ITU G.704 and G.706.
www.maxim-ic.com
DS21Q42
Enhanced Quad T1 Framer
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參數(shù)描述
DS21Q43A 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Quad E1 Framer
DS21Q43AT 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad E1 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
DS21Q43AT+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad E1 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
DS21Q43ATN 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Quad E1 Framer
DS21Q43-ATN 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad E1 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
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