參數(shù)資料
型號： DS21Q42T+
廠商： Maxim Integrated Products
文件頁數(shù)： 30/116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： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 128-LQFP
供應商設(shè)備封裝： 128-LQFP（14x20）
包裝： 管件
DS21Q42
20 of 116
Signal Name: BTS
Signal Description: Bus Type Select
Signal Type: Input
Strap high to select Motorola bus timing; strap low to select Intel bus timing. This pin controls the
function of the RD*(DS*), ALE(AS), and WR*(R/W*) pins. If BTS = 1, then these pins assume the
function listed in parenthesis ().
Signal Name: RD*(DS*)
Signal Description: Read Input (Data Strobe)
Signal Type: Input
RD* and DS* are active low signals. Note: DS is active high when MUX=1. Refer to bus timing
diagrams in section 21 .
Signal Name: FS0 AND FS1
Signal Description: Framer Selects
Signal Type: Input
Selects which of the four framers to be accessed.
Signal Name: CS*
Signal Description: Chip Select
Signal Type: Input
Must be low to read or write to the device. CS* is an active low signal.
Signal Name: WR*( R/W*)
Signal Description: Write Input(Read/Write)
Signal Type: Input
WR* is an active low signal.
TEST ACCESS PORT PINS
Signal Name: TEST
Signal Description: 3–State Control
Signal Type: Input
Set high to 3–state all output and I/O pins (including the parallel control port) when FMS = 1 or when
FMS = 0 and JTRST is tied low. Set low for normal operation. Ignored when FMS = 0 and JTRST = 1.
Useful in board level testing.
Signal Name: JTRST
Signal Description: IEEE 1149.1 Test Reset
Signal Type: Input
If FMS = 1: JTAG functionality is not available and JTRST is held LOW internally. If FMS = 0: JTAG
functionality is available and JTRST is pulled up internally by a 10-kilo ohm resistor. If FMS = 0, and
boundary scan is not used this pin should be held low. This signal is used to asynchronously reset the test
access port controller. The device enters the DEVICE ID MODE when JTRST is pulled high. The
device operates as a T1/E1 transceiver if JTRST is pulled low.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21Q42T+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Enhanced Quad 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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21Q42TN 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Enhanced Quad 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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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