- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98079 > SCD243110QCD (INTEL CORP) 4 CHANNEL(S), 134.4K bps, SERIAL COMM CONTROLLER, PQFP100 PDF資料下載
參數(shù)資料
| 型號(hào)： | SCD243110QCD |
| 廠商： | INTEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4 CHANNEL(S), 134.4K bps, SERIAL COMM CONTROLLER, PQFP100 |
| 封裝： | METRIC, QFP-100 |
| 文件頁(yè)數(shù)： | 151/186頁(yè) |
| 文件大?。?/td> | 2204K |
| 代理商： | SCD243110QCD |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)當(dāng)前第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)
Advanced Multi-Protocol Communications Controller — CD2431
Datasheet
67
6.0
Protocol Processing
6.1
HDLC Processing
6.1.1
FCS (Frame Check Sequence)
The FCS is a 16-bit standard computation used in HDLC, and defined in ISO 3309. This FCS
algorithm is the same that is used with the synchronous HDLC operation of the CD2431. The basic
characteristics of the FCS are the following:
Accumulation: FCS computation starts after the opening flag and continues to the closing flag.
Polynomial: The standard polynomial is
.
Pre-load: The FCS 16-bit accumulator is pre-set to all ‘1’s.
Transmit order: The FCS bits are identified as X15 to X0. The most-significant bit is X15, and is
transmitted first. Thus, the first FCS character transmitted has bits X15–X8 in character positions
D1–D8, respectively. The second FCS character has bits X7–X0 in character positions D1–D8,
respectively.
Transmit polarity: Inverted.
Correct remainder: The receiver calculates the entire received frame, including the received FCS
field. If the frame is received error-free, then the correct remainder in the FCS accumulation is
‘F0B 8’ (X15 is the leftmost bit).
The FCS can be individually enabled or disabled for the transmitter and receiver.
If enabled for the transmitter, the device appends the FCS on transmitted frames. If disabled, the
device adds no FCS at the end of the frame.
If enabled for the receiver, the device computes the received FCS and reports the results. If the FCS
append is also enabled, the device includes the 2-byte FCS in the received data presented to the
host. If disabled, the device does not test the received FCS.
6.1.2
HDLC Transmit Mode
The transmitter can be programmed to idle in either Flag (01111110) or Mark (continuous 1’s)
mode by the Idle bit (COR3[3]). When idle in Mark mode, frame transmission can be programmed
to be pre-pended by a programmable number of pad characters and flags. The pad character can be
selected as either 00 or AA. The pad characters allow the remote receivers phase locked loop to
synchronize quickly to the data. When NRZI encoding is used for Manchester encoding, the 00
character guarantees a transition every bit time, and the AA character guarantees exactly one
transition per bit time.
If the transmitter is idle in Mark mode, frame transmission is started when data is made available to
the transmitter, either by the TDR (Transmit Data register) or a DMA buffer. First, the
programmable number of pad characters are transmitted, then the programmable number of flag
characters. Data characters are then transmitted and a CRC value accumulated using each data
character.
x
16
x
12
x
5
1
++
+
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SCG2500AI-019.44M | 51.84 MHz, OTHER CLOCK GENERATOR, DSO14 |
| SCG4525 | 4000/14000/40000 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 1 INVERTED OUTPUT(S), DSO18 |
| SCN2641CC1A28 | 1 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PQCC28 |
| SCN2681TC1A44A | 2 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PQCC44 |
| SCN68562C2N48 | 2 CHANNEL(S), 4M bps, MULTI PROTOCOL CONTROLLER, PDIP48 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SCD248110QCD | 功能描述:IC 4CH WAN COMMUN CTRL 100QFP RoHS:否 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A |
| SCD24H | 制造商:ZOWIE 制造商全稱:Zowie Technology Corporation 功能描述:Schottky Barrier Diode |
| SCD24L | 制造商:ZOWIE 制造商全稱:Zowie Technology Corporation 功能描述:SURFACE MOUNT LOW VF SCHOTTKY BARRIER RECTIFIER |
| SCD24LH | 制造商:ZOWIE 制造商全稱:Zowie Technology Corporation 功能描述:Schottky Barrier Diode |
| SCD255K851A3L28-A | 制造商:Cornell Dubilier Electronics 功能描述:CAPACITOR PP MODULE, 2.5UF, 850V, Product Range:CORNELL DUBILIER - SCD Series, C 制造商:Cornell Dubilier Electronics 功能描述:FILM CAPACITOR |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。