參數(shù)資料
型號： DS21FT42N
廠商： Maxim Integrated Products
文件頁數(shù)： 75/114頁
文件大小： 0K
描述： IC FRAMER T1 4X3 12CH IND 300BGA
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 40
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： 225mA
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 300-BBGA
供應(yīng)商設(shè)備封裝： 300-PBGA（27x27）
包裝： 管件
DS21FT42/DS21FF42
63 of 114
tied to the TSSYNC input. On power–up after the RSYSCLK and TSYSCLK signals have locked to the
RCLK signal, the elastic stores should be reset.
17.
HDLC CONTROLLER
The DS21Q42 has an enhanced HDLC controller configurable for use with the Facilities Data Link or
DS0s. There are 64-byte buffers in both the transmit and receive paths. The user can select any DS0 or
multiple DS0s as well as any specific bits within the DS0(s) to pass through the HDLC controller. See
Figure 24-15 for details on formatting the transmit side. Note that TBOC.6 = 1 and TDC1.7 = 1 cannot
exist without corrupting the data in the FDL. For use with the FDL, see section 19.1. See Table 18-1 for
configuring the transmit HDLC controller.
Four new registers were added for the enhanced functionality of the HDLC controller; RDC1, RDC2,
TDC1, and TDC2. Note that the BOC controller is functional when the HDLC controller is used for
DS0s. Section 19 contains all of the HDLC and BOC registers and information on FDL/Fs Extraction
and Insertion with and without the HDLC controller.
TRANSMIT HDLC CONFIGURATION Table 17-1
Function
TBOC.6
TDC1.7
TCR1.2
DS0(s)
0
1
1 or 0
FDL
101
Disable
0
1 or 0
18.1 HDLC FOR DS0S
When using the HDLC controllers for DS0s, the same registers shown in section 19 will be used except
for the TBOC and RBOC registers and bits HCR.7, HSR.7, and HIMR.7. As a basic guideline for
interpreting and sending HDLC messages and BOC messages, the following sequences can be applied.
RECEIVE A HDLC MESSAGE
1. Enable RPS interrupts
2. Wait for interrupt to occur
3. Disable RPS interrupt and enable either RPE, RNE, or RHALF interrupt
4. Read RHIR to obtain REMPTY status
A. If REMPTY=0, then record OBYTE, CBYTE, and POK bits and then read the FIFO
A1. If CBYTE=0 then skip to step 5
A2. If CBYTE=1 then skip to step 7
B. If REMPTY=1, then skip to step 6
5. Repeat step 4
6. Wait for interrupt, skip to step 4
7. If POK=0, then discard whole packet, if POK=1, accept the packet
8. Disable RPE, RNE, or RHALF interrupt, enable RPS interrupt and return to step 1
相關(guān)PDF資料
PDF描述
VE-24R-IX-S CONVERTER MOD DC/DC 7.5V 75W
CONREVMCX003.062-L CONN RPMCX FEM EDGE MT 0.062"EXT
PIC18F23K20-E/SP IC PIC MCU FLASH 4KX16 28-DIP
CONREVSMA006.031 CONN RPSMA FML EDGE MULTI 0.031"
PIC18F25K20T-I/ML IC PIC MCU FLASH 16KX16 28QFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
DS21FT44+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4X3 E1 Framer E1 Framer 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
DS21FT44N 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl E1/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
DS21FT44N+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl E1/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
DS21Q348 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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*