參數(shù)資料
型號: DS21FT42N
廠商: Maxim Integrated Products
文件頁數(shù): 79/114頁
文件大?。?/td> 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
標準包裝: 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
67 of 114
RECEIVE A HDLC MESSAGE OR A BOC
1. Enable RBOC and RPS interrupts
2. Wait for interrupt to occur
3. If RBOC=1, then follow steps 5 and 6
4. If RPS=1, then follow steps 7 through 12
5. If LBD=1, a BOC is present, then read the code from the RBOC register and take action as needed
6. If BD=0, a BOC has ceased, take action as needed and then return to step 1
7. Disable RPS interrupt and enable either RPE, RNE, or RHALF interrupt
8. 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 9 a2. if CBYTE=1 then skip to step 11 b. if
REMPTY=1, then skip to step 10
9. Repeat step 8
10. Wait for interrupt, skip to step 8
11. If POK=0, then discard whole packet, if POK=1, accept the packet 12, disable RPE, RNE, or RHALF
interrupt, enable RPS interrupt and return to step 1.
TRANSMIT A HDLC MESSAGE
1. Make sure HDLC controller is done sending any previous messages and is current sending flags by
checking that the FIFO is empty by reading the TEMPTY status bit in the THIR register
2. Enable either the THALF or TNF interrupt
3. Read THIR to obtain TFULL status a. if TFULL=0, then write a byte into the FIFO and skip to next
step (special case occurs when the last byte is to be written, in this case set TEOM=1 before writing
the byte and then skip to step 6) b. if TFULL=1, then skip to step 5
4. Repeat step 3
5. Wait for interrupt, skip to step 3
6. Disable THALF or TNF interrupt and enable TMEND interrupt
7. Wait for an interrupt, then read TUDR status bit to make sure packet was transmitted correctly.
TRANSMIT A BOC
1. Write 6–bit code into TBOC
2. Set SBOC bit in TBOC=1
19.1.3 HDLC/BOC Register Description
HCR: HDLC CONTROL REGISTER (Address = 00 Hex)
(MSB)
(LSB)
RBR
RHR
TFS
THR
TABT
TEOM
TZSD
TCRCD
SYMBOL
POSITION
NAME AND DESCRIPTION
RBR
HCR.7
Receive BOC Reset. A 0 to 1 transition will reset the BOC
circuitry. Must be cleared and set again for a subsequent
reset.
RHR
HCR.6
Receive HDLC Reset. A 0 to 1 transition will reset the
HDLC controller. Must be cleared and set again for a
subsequent reset.
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