參數(shù)資料
型號： DS21552LN
廠商： Maxim Integrated Products
文件頁數(shù)： 106/137頁
文件大小： 0K
描述： IC TXRX T1 1-CHIP 5V 100-LQFP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
產(chǎn)品變化通告： Product Discontinuation 20/Feb/2012
標(biāo)準(zhǔn)包裝： 90
功能： 單芯片收發(fā)器
接口： E1，HDLC，J1，T1
電路數(shù)： 1
電源電壓： 4.75 V ~ 5.25 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： 100-LQFP
供應(yīng)商設(shè)備封裝： 100-LQFP（14x14）
包裝： 托盤
包括： DSX-1 和 CSU 線路補(bǔ)償發(fā)生器，HDLC 控制器，帶內(nèi)回路代碼發(fā)生器和檢測器
DS21352/DS21552
70 of 137
15.3.3.2 TRANSMIT AN 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 TPRM 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.
15.3.3.3 TRANSMIT A BOC
1) Write 6–bit code into TBOC.
2) Set SBOC bit in TBOC=1.
15.3.4 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.
TFS
HCR.5
Transmit Flag/Idle Select.
0 = 7Eh
1 = FFh
THR
HCR.4
Transmit HDLC Reset. A 0 to 1 transition will reset both the HDLC controller and the
transmit BOC circuitry. Must be cleared and set again for a subsequent reset.
TABT
HCR.3
Transmit Abort. A 0 to 1 transition will cause the FIFO contents to be dumped and one
FEh abort to be sent followed by 7Eh or FFh flags/idle until a new packet is initiated by
writing new data into the FIFO. Must be cleared and set again for a subsequent abort to
be sent.
TEOM
HCR.2
Transmit End of Message. Should be set to a one just before the last data byte of a
HDLC packet is written into the transmit FIFO at TFFR. This bit will be cleared by the
HDLC controller when the last byte has been transmitted.
TZSD
HCR.1
Transmit Zero Stuffer Defeat. Overrides internal enable.
0 = enable the zero stuffer (normal operation)
1 = disable the zero stuffer
TCRCD
HCR.0
Transmit CRC Defeat.
0 = enable CRC generation (normal operation)
1 = disable CRC generation
HSR: HDLC STATUS REGISTER (Address=01 Hex)
(MSB)
(LSB)
RBOC
RPE
RPS
RHALF
RNE
THALF
TNF
TMEND
SYMBOL
POSITION
NAME AND DESCRIPTION
RBOC
HSR.7
Receive BOC Detector Change of State. Set whenever the BOC detector sees a
change of state from a BOC Detected to a No Valid Code seen or vice versa. The setting
of this bit prompt the user to read the RBOC register for details.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21552LN+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 5V T1 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
DS21554 制造商:Maxim Integrated Products 功能描述:
DS21554G 功能描述:IC TXRX E1 1-CHIP 5V 100-BGA RoHS:否 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
DS21554GN 功能描述:IC TXRX E1 1-CHIP 5V 100-BGA RoHS:否 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
DS21554L 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3/5V E1 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
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