- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄366550 > AM79C90 (Advanced Micro Devices, Inc.) CMOS Local Area Network Controller for Ethernet (C-LANCE) PDF資料下載
參數(shù)資料
| 型號(hào)： | AM79C90 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | CMOS Local Area Network Controller for Ethernet (C-LANCE) |
| 中文描述： | 的CMOS局域網(wǎng)控制器（丙應(yīng)聘以太網(wǎng)） |
| 文件頁數(shù)： | 36/62頁 |
| 文件大?。?/td> | 437K |
| 代理商： | AM79C90 |
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頁第32頁第33頁第34頁第35頁當(dāng)前第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
AMD
P R E L I M I N A R Y
36
Am79C90
Serial Transmission
Serial transmission consists of sending an unbroken bit
stream from the TX output pin consisting of:
Preamble/SFD: 56 alternating ONES and ZEROES
terminating with the SFD byte (10101011).
Data: The serialized bit stream from the Transmit
FIFO Shifted out with LSB first.
CRC: The inverted 32-bit polynomial calculated
from the data, address, and type field. CRC is not
transmitted if:
—Transmission of the data field is truncated for
any reason.
— CLSN becomes asserted any time during
transmission.
— MODE <03> DTCR = 1 in a normal or loopback
transmission mode, and ADD_FCS=0 in the
transmit descriptor.
The Transmission is indicated at the output pin by the
assertion of TENA with the first bit of the preamble and
the negation of TENA after the last transmitted bit.
The C-LANCE starts transmitting the preamble when
the following are satisfied:
There is at least one byte of data to be transmitted
in the Transmit FIFO.
The interpacket delay has elapsed.
The backoff interval has elapsed, if doing a
retransmission.
Serial Reception
Serial reception consists of receiving an unbroken bit
stream on the RX input pin consisting of:
Preamble/SFD: Two ONES occurring a minimum
of 8 bit times after the assertion of RENA.
Destination Address: The 48 bits (6 bytes) follow-
ing the SFD.
Data: The serial bit stream following the Destina-
tion Address. The last 4 complete bytes of data are
the CRC. The Destination Address and the data
are framed into bytes and enter the Receive FIFO.
Source Address and Length field are part of the
data which are transparent to the C-LANCE.
Reception is indicated at the input pin by the assertion of
RENA and the presence of clock on RCLK while TENA
is inactive. The C-LANCE does not sample the received
data until about 800 ns after RENA goes high.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM79C90JC | CMOS Local Area Network Controller for Ethernet (C-LANCE) |
| AM79C90JCTR | KPTC6CG10-6P |
| AM79C90PC | CMOS Local Area Network Controller for Ethernet (C-LANCE) |
| AM79C90PCTR | CMOS Local Area Network Controller for Ethernet (C-LANCE) |
| AM79C930 | PCnet-Mobile Single-Chip Wireless LAN Media Access Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C900 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| AM79C900AJC | 制造商:Advanced Micro Devices 功能描述: |
| AM79C900JC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Node Controller |
| AM79C901 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AMD’s Am79C901 HomePNA-Compliant Device with Motorola’s MC68360. MPC860. MPC850. and MPC8260? - (PDF) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。