- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379851 > CDK8920A (Cirrus Logic, Inc.) CRYSTAL LAN ISA PLUG-AND-PLAY ETHERNET CONTROLLER PDF資料下載
參數(shù)資料
| 型號(hào)： | CDK8920A |
| 廠商： | Cirrus Logic, Inc. |
| 英文描述： | CRYSTAL LAN ISA PLUG-AND-PLAY ETHERNET CONTROLLER |
| 中文描述： | 水晶藍(lán)的ISA即插即用，即插即用以太網(wǎng)控制器 |
| 文件頁數(shù)： | 32/144頁 |
| 文件大?。?/td> | 1229K |
| 代理商： | CDK8920A |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁當(dāng)前第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁
Onecoll bit is set, the MAC discards the packet
without attempting any re-transmission.
Late Collisions:
If a collision is detected after
the first 512 bits have been transmitted, the
MAC immediately terminates transmission,
transmits the jam sequence, discards the packet,
and sets the Out-of-window bit (Register 8,
TxEvent, Bit 9). The CS8920A does not initiate
backoff or attempt to re-transmit the frame. For
additional information about Late Collisions, see
Out-of-Window Error
in this section.
Backoff:
After the MAC has completed transmit-
ting the jam sequence, it must wait, or "Back
off", before attempting to transmit again. The
amount of time it must wait is determined by
one of two Backoff algorithms: the Standard
Backoff algorithm (ISO/IEC 4.2.3.2.5) or the
Modified Backoff algorithm. The host selects
which algorithm through the ModBackoffE bit
(Register 13, LineCTL, Bit B).
Standard Backoff:
The Standard Backoff algo-
rithm, also called the "Truncated Binary
Exponential Backoff", is described by the equa-
tion:
0
≤
r
≤
2
k
where r (a random integer) is the number of slot
times the MAC must wait (1 slot time = 512 bit
times), and k is the smaller of n or 10, where n
is the number of re-transmission attempts.
Modified Backoff: The Modified Backoff is de-
scribed by the equation:
0
≤
r
≤
2
k
where r (a random integer) is the number of slot
times the MAC must wait, and k is 3 for n <3
and k is the smaller of n or 10 for n>3, where n
is the number of re-transmission attempts.
The advantage of the Modified Backoff algo-
rithm over the Standard Backoff algorithm is that
it reduces the possibility of multiple collisions
on the first three re-tries. The disadvantage is
that it extends the maximum time needed to gain
access to the network for the first three re-tries.
The host may choose to disable the Backoff al-
gorithm altogether by setting the DisableBackoff
bit (Register 19, TestCTL, Bit B). When dis-
abled, the CS8920A only waits the 9.6
μ
s IPG
time before starting transmission.
Encoder
Carrier
Detector
Decoder
& PLL
RX
MUX
TX
MUX
RXSQL
AUISQL
AUIRX
RX
TX
AUITX
AUICol
Clock
Carrier Sense
RX CLK
RX NRZ
TXCLK
TX NRZ
TEN
Port Select
Collision
MAC
ENDEC
10BASE-T
Transceiver
AUI
Figure 3.9. ENDEC
CS8920A
32
DS238PP2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CDL13005 | NPN PLASTIC POWER TRANSISTOR |
| CDLL4150-1 | SWITCHING DIODE |
| CDLL4567A | Single Schmitt-Trigger Inverter 5-SOT-23 -40 to 85 |
| CDLL4568 | TEMPERATURE COMPENSATED ZENER REFERENCE DIODES |
| CDLL4568A | Single Schmitt-Trigger Inverter 5-SC70 -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CDKEIL | 功能描述:開發(fā)軟件 Devel Software and Documention CD RoHS:否 制造商:Atollic Inc. 產(chǎn)品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| CDKEIL-US | 功能描述:開發(fā)軟件 DEVELOPMENT SOFTWARE AND DOCUMENTATION CD RoHS:否 制造商:Atollic Inc. 產(chǎn)品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| CDKWM1804-S-1 | 功能描述:WM1804 - Audio, Audio Processing Evaluation Board 制造商:cirrus logic inc. 系列:- 零件狀態(tài):有效 主要用途:音頻，音頻處理 嵌入式:- 使用的 IC/零件:WM1804 主要屬性:- 輔助屬性:- 所含物品:板 標(biāo)準(zhǔn)包裝:1 |
| CDKWM1811A-S-1 | 功能描述:WM1811A - Audio, CODEC Evaluation Board 制造商:cirrus logic inc. 系列:- 零件狀態(tài):有效 主要用途:音頻編解碼器 嵌入式:- 使用的 IC/零件:WM1811A 主要屬性:- 輔助屬性:- 所含物品:板 標(biāo)準(zhǔn)包裝:1 |
| CDKWM5102-S-1 | 功能描述:WM5102 - Audio, CODEC Evaluation Board 制造商:cirrus logic inc. 系列:- 零件狀態(tài):有效 主要用途:音頻編解碼器 嵌入式:- 使用的 IC/零件:WM5102 主要屬性:- 輔助屬性:- 所含物品:板 標(biāo)準(zhǔn)包裝:1 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。